HomeMy WebLinkAbout199 07-23-1963P L U M B I N G
C ODE
Ordinance No. 199
CITY OF EULESS
A D O P T E D
July 23, 1963
TABLE OF CONTENTS
Page
CHAPTER 1 TITLE CITED
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1.1 Title
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CHAPTER 2 INTENT AND PURPOSE
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2.1 Purpose
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CHAPTER 3 PIPING AFFECTED BY
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ORDINANCE
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3.1 Extent of Application
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3.2 Exclusion
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CHAPTER 4 DEFINITIONS
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Air Gap . .
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Air Mixer 0 0
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Air Shutter 0 a
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Anchors 0 0
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Appliance - Gas .
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Appliance - Flue
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Approved
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Automatic Gas Shut -off Valve
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Automatic Ignition • 1
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Automatic Pilot . ,
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Automatic Pilot Device
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Automatic Pilot, Complete Shut -off
Type
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Backflow
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Back Siphonage & 0
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Backflow Preventer . .
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Battery of Fixtures .
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Baffle 0 0
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Boiler
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Boiler Blow -out
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Branch
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Branch Fixture . . .
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Branch Horizontal
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Branch Interval
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Branch Line
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Branch Vent
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Building . . .
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Building Drain . . .
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Building Sewer . . .
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Building Trap . . .
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Burner
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Central Heating Gas Appliances
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Chimneys . . .
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Circuit Vent . . .
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City . . .
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Closed Water Piping System
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Clothes Dryer . . .
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Code . . .
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Combination Fixture . . .
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TABLE - OF CONTENTS (continued)
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Combined Building Sewer
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Combination Waste and Vent
System
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Combustion
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Combustion Chamber
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Combustion Construction
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Combustion Products
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Common Vent
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Concealed Gas Piping
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Condensate
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Consumer Gas Piping
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Continuous Vent
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Continuous Waste
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Cross Connection
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Dead End
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Demand - Gas
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Developed Length
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Diameter
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Diversity Factor
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Double Offset
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Draft Hood
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Drain
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Drainage Piping
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Drainage System
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Dual Vent
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Duct Furnace
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Durham System
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Effective Opening
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Existing Wori
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Exposed Piping
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Firing Valve
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Fixture Branch
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Fixture Drain
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Fixture Supply
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Fixture Unit
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Fixture Unit Flow Rate
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Flame Safeguard
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Floor Furnace
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Flooded
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Flood Level
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Flood -level Rim
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Flue Collar
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Flue Gases
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Flushometer Valve
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Flush Valves
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Frostproof Closet
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Furnace - Central Furnace
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Gas Company
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Gas Hose
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Gas Vents
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Grade
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Gravity
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Grease Interseptor
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Grease Trap
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TABLE OF CCMINTS ( continued)
Page
Hangers
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Horizontal Branch
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Horizontal Pipe
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Hotel and Restaurant
Range
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House Drain
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House Piping - Gas Plumbing
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House Sewer
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House Trap
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Incinerator
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Indirect Waste Pipe
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Individual Vent
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Industrial Wastes
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Insanitary
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Interceptor
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Limit Control
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Liquid Waste
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Listed
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Load Factor
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Loop Vent
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Lubricated Plug Type
Valve
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Main
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Main Burner
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Main Burner Control Valve
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Main Sewer
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Main Vent
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Manifold
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Manual Gas Valve
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May
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Meter
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Offset
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Outlet
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Person
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Pilot
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Pitch
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Plumber - Apprentice
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Plumber - Journeyman
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Plumber - Master
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Plumbing
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Plumbing Fixtures
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Plumbing Inspector
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Pool
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Potable 1later
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Primary Air
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Public Sewer
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Regulator - Gas Pressure
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Relief Device
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Relief Opening
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Relief Vent
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Return Offset
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Revent Pipe
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Rim
40
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Riser
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Room or Space Heater
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Roughing -in
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TABLE OF CONTENTS ( continued)
Page
Safety Shut -off Valve . . . . . . . . . . . . . . . . . . . . . . . . 11
Sand Interceptor
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Sanitary Sever
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Second Hand
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Secondary Air . . .
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Semi -rigid Tubing . .
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Separatpr . . .
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Septic Tank . . . .
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Service Pipe . . . .
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Sewage . . . .
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Shall . . . .
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Shut Off Valve . . .
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Side Vent . . . .
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Slope . . . .
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Soil Pipe
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Soil Vent
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Specific Gravity
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Stack
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Stack Group ,
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Stack Vent
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Stack Venting . . . .
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Stop Cock . . . .
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Sump . . . .
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Supports . . . .
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Thermostat , . , .
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Trap 0 .
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Trap Seal
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Unit Heater
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Unit Vent .
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Vacuum Breaker
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Valve
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Vent
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Vent Connector
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Vent Gases
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Vent Pipe . , . .
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Vent Stack . , . .
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Vent System - Gas Plumbing
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Vent System - Sanitary
Plumbing
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Vented Recessed Heater
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Vertical Pipe . . .
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Wall Heater, Unvented
Open -flame
Radiant
Type
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Waste
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Waste Pipe
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Water Distributing Pipe
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Water Main , . 0
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Water Outlet . . 0
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Waster Riser Pipe . .
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Water - Service Pipe .
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Water Supply System .
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Wet Vent . . . .
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14
Yard -line - Gas Plumbing
14
Yoke Vent . 0 0 0
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14
TABLE OF CONTENTS (continued)
Page
CHAPTER 5 LICENSING RBQU MMNT 13
5,1 Plumbing License Required . 15
CHAPTER 6 E104PTBD ACTIVITY . . . . . . . . 15
6,1 Exemptions 15
CHAPTER 7 A%1INISTRATION . 15
7.1 Plumbing Inspector 15
7.2 Prohibited Interests , , 16
7.3 Duties of Inspector , 16
7.4 Powers of Inspector : , 16
7.5 Liability of Inspector ; 16
7.6 Authority of Inspector , , 16
CHAPTER 8 PLUMBING APPEALS AND ADVISCRY BOARD 16
8.1 Organization of Board , , , , , , , , , , , , , , , , , , , , 16
8.2 Election of Officers and Adoption of Rules . . , . . . . . . . , 17
8.3 Duties and Powers of The Board . . . . . . . . . . . . . . . . . 17
CHAPTER 9 PERMITS AND FEES , , . . . . , , , , , , . , , , 18
9,1 Permits 0 . . . . , , , , , , . , , . 18
9,2 Fees 0 . , . , , , . , . . . , , . , 19
CHAPTER 10 BONDING PROVISIONS , . , e . , 20
10,1 Bond Required . . 20
CHAPTER 11 GENERAL RBG=TIONS , , . . . . . . . . . . . . . . . . 20
11,1 Conformance With Code . 20
11.2 Fittings and Connections . 20
11.3 Prohibited Fittings and Connections 21
11.4 Existing Buildings 21
11.5 Sewer and Water Pipes . . . . . . . 21
11.6 Water Closet Connections . . . . . . 21
11.7 Rat Proofing . . . . . . . . . . . . . . . . . . . . , . 21
CHAPTER 12 MAC IALS _ UQ ALITY AND WEIGHT . . . . . . . . . . . . . 22
12.1 Materials . . . . . . . . . . . . . . . , . . 9 22
CHAPTER 13 JOINTS AND CONNECTIONS . . . . . . . , . . . . . 22
13.1 General . . . . . . . . . . . . . . . . . . 22
13.2 Types of Joint* . . . 0 0 . . 0 0 . 0 0 0 . 0 0 . 0 22
TABLE OF CONTENTS (continued)
Page
CHAPTER 14 TRAPS AND CLEANOUTS . . . . 25
14.1 Traps . • : : 25
14.2 Fixture Traps . . . . . 0 : • . . . 25
14.3 Pipe Cleanouts . . . . . • . . . . . . . 26
CHAPTER 15 INTERCEPTCRS AND BACKWATER VALVES . . . . . . . . . . . 26
15.1 Interseptors and Separators . 26
15.2 Backwater Valves , . . . . 27
CHAPTER 16 PLMMING FIXTURES • . . . . . . . . . . . . . . . . . . . . 27
16.1 General Requirements . . . 27
16,2 Water Closets , . . . . . . 27
16.3 Urinals • • . • 28
16.4 Food Waste Grinder Units . 28
16.5 Drinking Fountains a . . . . 28
16.6 Shower Receptors and Compartments . . . . . . . . . . . . . . . 29
16.7 Special Fixtures . . • . . . • . . . . . . . . . . . . . . . . 29
CHAPTER 17 HANGERS AND SUPPCRTS • . . . • , . • 29
17.1 Strain and Stresses e : . . • o o 0 29
17.2 Verticle Piping . : , . . . . • . . . 4 : . • : i 29
17.3 Horizontal Piping . , . : , j 6 . . . . . . . . . . . . . 30
CHAPTER 18 INDIRECT WASTE PIPING AND SPECIAL WASTES . . . . . . . 30
18.1 Special Wastes . . . . . . . . . . . . . . . . . . . . . . 30
18.2 Length . . . . . . . . . . . . . . . . . . . . . . . . . . 30
CHAPTER 19 MATER SUPPLY AND DISTRIBUTION . . . . . . . . . . . . . . . 31
19.1 Cross Connections . . . . . . . . . . • . . . . . . . . . . . . 31
19.2 Prevention of Backflow By Air Gap . . . . . . . . . . . . . . . 31
190 Vacuum Breakers and Air Gaps . . . . . . . . . . . . . . . . . 31
19.4 Water Distribution Piping Fittings . . . . . . . . . . . . . . . 32
19.5 Water Heaters . . . . . . . . . . . . . . . . . . . . . . . 33
CHAPTER 20 DRAINAGE SYSTEM . . . . . . . • . . . . . . . . . . . . 33
20.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . 33
20.2 Building Seger • . . . . . . . . . . . . . . . . . . . . . . 34
20.3 Drainage Piping Installation . . . . . . . . . . • . . . . . . 34
20.4 Fixture Unit Values . . . . . . 35
20.5 Determination of Sizes For The Drainage System 36
CHAPTER 21 GENERAL M UIRBMENTS . . . . . . . . . . . . . . . . . . . 38
21.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . 38
21.2 Fixture Trap Vents . . . . . . . . . . . . . . . . . 39
21.3 Common Vent Defined . . 41
21.4 Met Venting and Stack Venting . . . . . . . . . . . . . . . 41
21.5 Individual Fixture Reventing . . . . . . . . . . . . . . . 45
21.6 Circuit and Loop Venting 0 0 . 0 . 0 0 0 0 0 0 0 . 0 0 . 0 0 45
TABU OF CONTENTS (continued)
Page
CHAPTER 22 GAS PLUMBING . . . . . . . . , . . . 46
22.1
Testing and Inspection , , , . ,
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22,2
General Regulations , a , . ,
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a 47
22,3
Pipe Size For Gas System . . a , ,
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22,4
Stoves and Other Appliances . a ,
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22.5
Listed Appliances and Accesories
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22.6
Air For Combustion , a , ,
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22.7
Pressure Regulators . a a .
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22.8
hater Heaters . a . . a .
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22,9
Central Heating Boilers and Furnaces
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22.10
Floor Furnaces , , , , a , , .
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22.11
Duct Furnaces a , , , . , , a ,
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22.12
Appliance and Bquipmant Vents , .
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22.13
Venting Requirements , , , a , . .
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22.14
Electrical Connections . . . , e .
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22.15
Appliance With Accepted Standard
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CHAPTER
23 TRAILER PARK PLUMBING AND MAINAGE
SYSTEMS
0
0
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23.1
General ,
0,
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23.2
Drainage and Vent
63
23.3
Water Distributing System
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23 :4
Inspection . , a , • .
6
65
23.5
Responsibility . . a , . . . . .
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65
CHAPTER
24 PENALTY AND CLOSING PROVISIONS
69
24.1
Prohibiting Work Without a Permit
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24.2
Prohibiting Use Of 7- :-A'-.Asted Installations
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240
Penalties a . . . , . , a , a a
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24.4
Form Of Complaints . , a a , . . ,
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24.5
Responsibility For Defects Unchanged
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24.6
Severability Clause . . . . , a ,
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24.7
Repealing Clause , , , a , . a ,
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, 69
ORDINAMCE MO, j f 1
AN CRDINANCE REPEALING ALL IMDINANCES, OR PARTS OF ORDINANCES
OR AMENDMENTS THERETO, THAT CONFLICT WITH THE TERMS OR CCN-
DITIONS OF THIS ORDINANCE AND ENACTING IN LIEU THEREOF A NEW
CRDINANCE, REGULATING PLUMBING IVIORK IN THE CITY OF EULESS,
TEXAS; DEFINING CERTAIN TERMS; PROVIDING FCR CERTAIN EXEMP-
TIONS; PROVIDING FOR THE ENFORCEMENT OF THIS ORDINANCE AND
THE ISSUANCE OF PERMITS AND ESTABLISHING CERTAIN FEES;
PROVIDING FOR SPECIFICATIONS, MATERIALS AND METHODS OF
PLUMBING INSTALLATIONS; PROVIDING PENALTIES FCR VIOLATION
OF THIS CRDINANCE; PROVIDING A SEVERABILITY CLAUSE.
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF EULESS, TEXASS
CHAPTER 1.
TITLE CITED
1.1 This ordinance shall be known as the Plumbing Ordinance of the City of
Euless and may be cited as such.
It shall be unlawful for any person, association of persons, co- partnership,
or corporation, to enfa ^e in the business of plumbing, or do or perform any plumb-
ing as defined in this ordinance, without first having procured the necessary
licenses and permits as hereinafter provided for, and all plumbina, plumbi.n? work
and workmanship and materials shall meet the requirements of this ordinance and
shall pass all inspections required in this ordinance in regard to the work done.
CHAPTER 2.
INTENT AND PURPOSE'
2.1 PURPOSE: For the protection and preservation of life and of the public health,
safety, -property and the general welfare of the people, the following provisions
are enacted relating to the installations, alteration or repair of pipes, fittings,
and fixtures for water, sewage and natural gas in all buildings and structures and
on all property now erected or to be erected, changed, constructed, reconstructed,
repaired or altered in the City of Euless, and outside of the City of Euless if
same be connected to either the City water or sewage systems. The intent and pur-
pose of this ordinance is to regulate the construction, erection, enlargement,
alteration, or repair of all piping, fittings, fixtures, etc., used for the
conduction of water, sewage and natural gas in or on and about any and all premises
in the City of Euless and outside the boundaries of the City of Euless if same be
connected to either the City water or sewage systems.
CHAPTER 3.
PIPING AFFECTED BY 77jIS CRDINANCE
3.1 EXTENT OF APPLICATION: This ordinance shall apply to all nlumbin" as herein
defined within the boundaries of the Cite of Euless. Any plumbing outside the bound-
aries of the City of Euless connecti.n7 to either the City water or sewerage systems
shall meet all the requirements of this ordinance as to.metb.ods of installation and
material and shall be inspected by the City Plumt�inj Inspector.
1.
3.2 EXCLUSION: This paragraph shall not apply to that work done by authorized
employees of the City of Euless in the laying of City water mains and services
and City sewer mains and services, nor to the installation of gas distri_butind
mains and services in the streets and alleys by authorized employees of any -as
distributing company.
CHAPTER 4.
DEFINITIONS
AIR GAP: An air gap in a water- supply system is the unobstructed vertical distance
through the free atmosphere between the lowest opening from any pipe or faucet
supplying water to a tank, plumbing fixture, or other device and the flood -level
rim of the receptacle.
AIR MIXER: That portion of an injection (Bunsen) type burner into which the
primary air is introduced.
AIR SHUTTER: An adjustable device for varying the size of the primary air inlet
or inlets.
ANCHORS: See Supports.
APPLIANCE - GAS: A gas appliance is any device which utilizes gas fuel to produce
heat, light or power.
APPLIAWE FLUE: The flue passages within the appliance.
APPROVED: Approved means accepted or acceptable under an applicable specification
stated or cited in this Code.
AUTOMATIC GAS SHUT -OFF VALVE: A device so constructed that the attainment of a
temperature or pressure in the medium beini heated in excess of some predetermined
limit acts upon a chemical, metallic or diaphratrm element in such a way as to
cause the gas to the appliance to be shut off and remain off.
AUTOMATIC IGNITION: Automatic ignition shall be interpreted as means which provide
or ignition of the las at the burner when the gas burner valve controlling the
gas to that burner is turned on, and will effect re- ignition if the flame on the
burner is turned on, and will effect re- ignition if the flames on the burner have
been extinguished by means other than closin- the gas burner valve.
AUTOMATIC PILOT: Consists of an automatic pilot device and pilot burner securely
assembled in fixed functional relationship.
AUTOMATIC PILOT DEVICE= A device employed with gas burning equipment which will
automatically shut off the gas supply to the burner being served by either direct
or indirect means when the pilot flame is extinguished. The pilot burner may or
may not be constructed integrally with the device.
AUTOMATIC PILOT, COMPLETE SHUT -OFF TYPE: An automatic pilot for shutting off,
automatically, the gas supply to the main burner and pilot in event of pilot or
gas failure, and also for preventing the gas from being turned into the main
burner unless the pilot is lighted.
2.
r
BACKFMI : Backflow is the reverse flow (by ryravity) of water in a water distribution
system.
BACK- SIPHONAGE: Back siphonage is the reverse flow (induced by siphonage) of water
in a water distribution system. See Backflow.
BACK_FLal PREV.ENTER: A Backflow preventer is a device or means to prevent backflow
into the potable water system.
BATTERY OF FIXTURES: A battery of fixtures is any group of two or more similar
adjacent fixtures which discharge into a common horizontal waste or soil branch.
BAFFLE : An object placed in an appliance to change the direction of, or retard
the low of air, air -gas mixture, or flue gasses.
BOILER: A self- contained gas burning appliance for supplying hot water or low
pressure steam, primarily intended for domestic and commercial space heating
application.
BOILER BLOT -1 -OFF: A boiler blow -off is an outlet on a boiler to permit emptying
or discharge of sediment.
BRANCH: A branch is any part of the piping, system other than a main, riser, or stack.
BRANCH, FIXTURE: See Fixture Branch.
BRANCH, HORIZONTAL: See Horizontal Branch.
BRANCH INTERVAL: A branch interval is a length of soil or waste stack correspond-
ing i, general to a story heiryht, but in no case less than 8 feet within which the
horizontal branches from one floor or story of a buildinrr are connected to the
stack.
BRANCH LINE: Gas piping which conveys gas from a supply line to the appliance.
BRANCH VENT: A branch vent is a vent connecting one or more individual vents with
a vent stack or stack vent.
BUILDING: A building is a structure built, erected, and framed of component
structural parts designed for the housing, shelter, enclosure, or support of
persons, animals or property of any kind.
BUILDING DRAIN: A building (house) drain is that part of the lowest piping of a
drainage system which receives the discharge from soil, waste, and other drainage
pipes inside the walls of the building and conveys it to the building (house)
sewer beginning 3 feet outside the building wall.
BUILDING SEWER: The building (house) sewer is that part of the horizontal piping,
of a drainage system which extends from the end of the building drain and which
receives the discharge of the building drain and conveys it to a public sewer,
private sewer, individual sewage- disposal system or other point of disposal.
BUILDING TRAP: A building (house) trap is a device, fitting, or assembly of
fittings installed in the building drain to prevent circulation of air between
the drainage system of the buildin¢ and the buildin¢ sewer.
3.
BTU! Abbreviation for British Thermul Unit which is the quanity of hear required
to raise the temperature of one pound of water one degree Fahrenheit.
BURNER: A device for the final conveyance of the gas, or a mixture of gas and
air, to the combustion zone.
CENTRAL HEATIN GAS APPLIANCE: A vented gas -fired appliance comprising the follow-
ing classes as defined here n: Boiler, Central Furnace, Floor Furnace, or Vented
Recessed Heater,
CHIMNEYS: A. Factory -Built Chimneys - Chimneys that are factory made, listed
by at nationally recognized testing agency, for venting as
appliances, gas incinerators, and solid or liquid fuel burning
appliances.
B. Masonry Chimneys - Field constructed chimneys built in accordance
with nationally recognized codes or standards.
C. Metal Chimneys - Chimneys made of metal of adequate thichness,
galvanized or painted unless suitable corrosion resistent,
properly welded or riveted and built in accordance with nationally
recognized codes or standards.
CIRCUIT VENT: A circuit vent is a branch vent that serves two or more traps and
extends from in front of the last fixture connection of a horizontal branch to
the vent stack.
CITY: Where the word "City" is used in this Code it shall mean the City of
Euless, Texas,
CLOSED WATER PIPING SYSTEM: A system of water piping where a check valve or
other device prevents the free return of water or steam to the water main.
CLOTHES DRYER: A device used to dry wet laundry by means of heat derived from
the com stion of fuel gas.
CODE: The word "Code" when used alone shall mean these regulations, subsequent
amendments theretom or any emergency rule or regulation which the Administrative
authority having jurisdiction may lawfully adopt.
COMBINATION FIXTURE: A combination fixture is a fixture combining one sink and tra-
or a two -or three - compartment sink or tray in one unit.
COMBINED BUILDING SEWER: A combined building sewer receives storm water and sewage.
COMBINATION 11ASTE AND VENT SYSTEM: A combination waste and vent system is a
specially designed system of waste piping embodying the horizontal wet venting
of one or more sinks or floor drains by means of a common waste and vent pipe
adequately sized to provide free movement of air above the flow line of the drain.
C011BUSTIOTI: Combustion, as used herein, is the rapid oxidation of fuel cases
accompanied ompaiee by the production of heat, or heat and li.jht.
COMBUSTION CHAMBER: The portion of an appliance within which combustion occurs.
COMBUSTIBLE CONSTRUCTION: By combustible construction is meant a combustible
wall or combustible surface constructed of wood, composition, or of wooden
studding and lath and plaster.
4.
CCMBUSTICM PRODUCTS: Constituents resulting from the combustion of a fuel with
the oxygen of the air, indluding the inerts but excluding excess air.
COMMON VENT: A common vent is a vent conntct4JO, at the .junction of 2 fixtures
mac. rain— s a =n serving as a vent f tr both fixtures.
CONCEALED GAS PIPING: Gas piping which, when in place in the finished ?wilding
011 a hidden Tr om view by the structure.
CONDENSATE (Condensation) The liquid which separates from a -,as (including flue
gas ) due to a reduction in temperature.
CCNSUMERS GAS PIPING: All gas piping and fittings extending from the point of
delivery to the ou ets, exclusive of piping, meters, regulators, valves, fittings,
etc, owned by the gas company.
CONTINUOUS VENT: A continuous vent is a vertical vent that is a continuation of the
ZIF-ain to wFich I I t connects.
CONTINUOUS 11ASTE: A continuous waste is a drain from two or three fixtures
connected to a single trap.
CROSS CONNECTION: A cross connection is a physical connection or other arrange-
ment thru which a potable water system may be contaminated by BACK SIPHCNAGE
or BACKF1,04,
Direct Cross Connection: A direct cross connection is a physical connec-
tion Between a potable water system and water of unknown quality.
Indirect Cross Connections An indirect cross connection is any arrange-
ment, other than a direct cross connection, whereby an outlet of a
potable water system may come in contact with water of unknown quality.
DEAD END: A dead end is a branch leadin4 from a soil, waste, or vent pipe, buildine
drain,� or building sewer, which is terminated at a developed distance of 2 feet or
more by means of a pluj� or other closed fitting.
DEMAND - GAS: The maximum amount of gas required per unit of time, usually expressed
i� n cu, ft, per hr., or BTU per hr., required for the operation of the appliance or
appliances supplied.
DEVELOPED LENGTH: The developed length of a pipe is its length along the center
line of the pipe and fittings.
DIAMETER: Unless specifically stated, the term "Diameter" is the nominal diameter
as ec" i"si Wated commercially.
DIVERSITY FACTCR: Ratio of the maximum probable demand to the maximum possible
demand,
DOUBLE OFFSET: A double offset is two changes of direction installed in succession
or series in continuous pipe.
DRAFT HOOD: A device built into an appliance, or made a part of the vent connector
From a pliance, which is designed to (1) insure the ready excape of the products
of combustion in the event of no draft, back draft, or stoppage beyond the draft
hood; (2) prevent a back draft from entering the appliance; and (3) neutralize the
effect of stack action of the vent upon the operation of the appliance.
5.
1^ -1-1
DRAINS A drain is any pipe which carries waste water or water -borne wastes in a
ui ing drainage system.
DRAINAGE PIPING! See Drainage System,
DRAINAGE SYSTEM: A drainage system (drainage piping) includes all the piping
within public or private premiss, which converts sewagei rain water, or' other
liquid wastes to a legal point df disposal, but does hot include the mains of a
public sewer system or private dr pubiit sewagd- treatment of disposal plant.
DUAL VENT: See Common Vent.
DUCT FURNACE: A furnace normally installed in distribution ducts or air condi-
tioning systems to aupply warm air for heating. This definition shall apply only
to an appliance which depends for air circulation on a blower not furnished as
part of the furnace.
DURHAM SYSTEM: Durham System is a term used to describe soil or waste systems
where all pipin- is of threaded pipe, tubin -, or other such ri?id construction,
using recessed drainage fittin -s to correspond to the types of pipin7.
EFFECTIVE OPENING: The effective opening is the minimum cross- sectional area at
the point of water - supply discharge, measured or expressed in terms of (1)
diameter of a circle, (2) if the opening is not circular, the diameter of a
circle of equivalent cross - sectional area. (This is applicable to air gap.)
EXISTING WCRX: Existing worts is a plumbing system or any part thereof which has
been installed prior to the effective date of this Code.
EXPOSED pIPjNG: Piping which will be in view in the finished structure.
FIRING VALVE: A valve of the plug and barrel type designed for use with gas, and
equui p d wlTh a lever handle for manual operation and a dial to indicate the
per cent of opening.
FIXTURE BRANCH: A fixture branch is a pipe connecting several fixtures.
FIXTURE DRAIN: A fixture drain is the drain from the trap ofa fixture to the
jusctionofthat drain with any other drain pipe.
FIXTURE SUPPLY: A fixture supply is a water - supply pipe connecting, the fixture
with the fixture branch.
FIXTURE UNIT: A fixture unit is a measurement used to express the load producing
effects o—T-Tifferent kinds of plumbing fixtures.
FIXTURE UNIT FL01 RATE: Fixture -unit flow rate is the total discharge flow in GPM
of a single Fixture divided by 7.5 which provided the flow rate of that particular
plumbing fixture as a unit of flow.
FLAME SAFEGUARD: A device which will automatically shut off the gas supply to a
main burner or group of burners when the means of ignition of such burners be-
comes inoperative, and when flame failure occurs on the burner or group of burners.
FLOCK FURNACEt A completely self contained unit furnace suspended from the floor of
the space being heated, taking air for combustion from outside this space, and
with means for observing flames and lighting the appliance from such space.
6.
FLOODED: A fixture is flooded when the liquid therein raises to the flood -level
rim.
FLOOD LEVELt See Flooded.
FLOOD -LEVEL RIM: The flood -level rim is the top edge of the receptacle from which
water overflows.
FLUE COUARt That portion of an appliance designed for the attachment of the
rcior vent connector.
FLUB GASES: Products of combustion plus excess air in appliance flues or heat
exc angers before the draft hood or draft regulator),
FLUSHOb7ETER VALVE: A fii:shometer vt6lvd Is a device which discharges a predetermined
quant y of water to fixtures for fiushing pUrposes and is actuated by direct
water pressure.
FLUSH VALVES: A flush valve is a device located at the bottom of the tank for the
purpose o =lashing water closets and similar fixtures.
FROSTPROOF CLOSET: A frostproof closet is a hopper that has no water in the bowl
and has the trap and the control valve for its water supply installed below the
frost line.
FURNACE - CENTRAL FURNACE: A self contained gas burning appliance for heating air
by transfer oF heat o combustion through metal to the air, and designed to supply
heated air through ducts to spaces remote from or adjacent to the appliance
location.
GAS CO1PANY: The organization operatinty the ryas distributing system.
GAS HOSE: A gas conduit which depends for ti- htness on joint packing, or on any
wall structure other than that formed by a continuous one -piece metal tubin7
member.
GAS VENITS: A. Type B. Gas Vents. Factory made Pas vents listed by a nationally
recognized testing agency for venting listed or approved appliances
equipped to burn only gas.
B. Tie B -C1 Gas Vents. Factory made bas vents listed by a nationally
recogn zea"tes`ing agency for venting listed or approved gas -
fired vented recessed heaters.
C, Type C Gas Vents. Vents constructed of sheet copper not less than
No. 24 U.S. Standard gage or galvanized iron of not less than No.
20 U.S. Standard gage, or other approved noncombustible corrosion -
resistent material.
GLOB: Grade is the slope or fall of a line of pipe in reference to a horizontal
place. In drainage it is usually expressed as the fall in a fraction of an inch
per foot length of pipe.
GRAS See Specific Gravity,
GREASE INTERCEPTOR: See Interceptor.
GREASE TRAP: See Interceptor.
HANGERS: See Supports. 7.
HCRIZONTAL BRANCH: A horizontal branch is a drain extending laterally from a
soil or was e stack or building drain, with or without vertical sections or
branches, which receives the discharge from one or more fixture drains and con-
ducts it to the soil or waste stack or to the building (house) drain,
HCRIZONTAL PIPB: Horizontal pipe means any pipe or fitting which mades an angle
of ess than 43 degrees with the horizontal.
H09ML AND RESTAURANT RANGE: A gag appliance of any floor type providing for
top cooking, roasting, baking or broiling, or any combination of top cooking with
any of these other functions and not designed specifically for domestic use.
HOUSE DRAIN: See Building Drain.
HOUSE PIPING - GAS PLUMING:
A. The pas piping from the point where it enters the building
or foundation to and including the outlets. (Applicable where
the gas meter is located some distance from the building.)
B. The gas piping from the gas meter to and including the outlets.
(Applicable where the gas meter is located in or immediately
adjacent to the building.)
HOUSE SEWER: See Building Sewer.
HOUSE TRAP: See Building Trap.
INCINERATOR: An appliance used to reduce refuse material to ashes, and which
is sold as a complete unit.
INDIRECT WASTE PIPE: An indirect waste pipe is a pipe that does not connect
directly with the ainage system but conveys liquid wastes by discharging into
a plumbing fixture or receptacle which is directly connected to the drainage
system.
INDIVIDUAL VENT: An individual vent is a pipe installed to vent a fixture trap
and which connects with the vent system above the fixture served or terminates
in the open air.
INDUSTRIAL WASTES: Industrial wastes are liquid wastes resulting from the
process employed in industrial establishments and are free of fecal matter.
INSANITARY: Contrary to sanitary principles - injurious to health.
INTERCEPTCR: An interceptor is a device designed and installed so as to separate
and retain deleterious, hazardous, or undesirable matter from normal wastes and
permit normal sewage or liquid wastes to discharge into the disposal terminal by
gravity.
LIMIT CONTROL: A device responsive to changes in pressing or temperature or
liquid level for turning on, shutting off, or throttling the gas supply to an
appliance.
LIQUID WASTE: Liquid waste is the discharge from any fixture, appliance, or
appurtenance, in connection with a plumbing system which does not receive fecal
matter.
S.
LISTED: The word "Listed" as used herein when not otherwise clarified means
acceptable as outlined in Paragraph 24.5.1.
LOAD FACTO;: Load Factor is the percents ^e of the total connected fixture unit _flow
rate which is likely to occur at any point in the drainage system. It varies with
the type of occupancy, the total flow unit above this point being considered, and
with the probability factor of simultaneous use.
LOOP VENT: A loop vent is the same as a circuit vent except that it loops bath and
connects with a stack vent instead of a vent stack.
LUBRICATED PLUG TYPE VALVE: A valve of the plug, and barrel type provided with means
or maintaining a ubricant between the bearing, surfaces.
MAIN: The main of any system of continous piping is the principal artery of the
sysMem, to which branches may be connected.
MAIN BURNER: A device or group of devices essentially forming an integral unit for
the Final conveyance of gas or a mixture of gas and air to the combustion zone,
and on which combustion takes place to accomplish the function for which the appliance
is designed.
MAIN BURNER CONTROL VALVE: A valve which controls the gas supply to the main
Miner manifold.
MAIN SEtVER: See Public Sewer.
MAIN VEW : The main vent is the principal artery of the venting system, to which
vent branches may be connected.
MANIFOLD: The conduit of an appliance which supplies gas to the individual burners.
MANUAL GAS VALVE: A valve (or cock) of the plug and barrel type designed for use
with gas, operated manually to control or shut off the supply of m- s,
MAY: The word "may" i8 a permissive term.
METER: The instrument installed to measure the volumne of gas delivered through it.
OFFSET: An offset in a line of piping is a combination of elbows or bends which
brings one section of the pipe out of line but into a line parallel with the other
section.
OUTLET: A threaded connection or bolted flange in a pipe system to which a gas
rning appliance is or may be attached. Outlets must be located in the room or
space where the appliance is or may be installed.
PERSON: Person is a natural person, his heirs, executors, administrators or
as` s� g ; and includes a firm, partnership or corporation, its or theist successors
or assigns. Singular includes plural; male includes female.
PILOT: A small flame which is utilized to ignite the gas at the main burner or
burners.
PITCH: See Grade.
PLUMBER - APPRENTICE; A "Plumber's Apprentice" within the meaning of this Code is
any person other than a master plumber or journeyman plumber, who, as his principal
occupation, is engaged in learning and assisting a licensed plumber in the install-
ation of plumbing.
9.
PLUMBER - JOURNEYMAN: A "Journeyman Plumber" within the meaning of this Code is
any person other than a master plumber who engages in or works at the actual in-
stallation, alteration, repair and renovatin of plumbing, and who is licensed by
the Texas State Board of Plumbing Examiners as provided by the Plumbing License
Law of 1947.
PLUMBER - MASTER: A "Master Plumber" within the meaning of this Code is a plumber
raving a regular place of business, who, by himself, or through a person or persons
in his employ, performs plumbing work, and who is licensed by the State Board of
Plumbing Examiners as provided by the Plumbing License Law of 1947.
PLUMBING: "Plumbing" as used in this Code means and shall include: (1) All piping,
fixtures, appurtenances and appliances for a supply of water or gas, or both, for
all personal or domestic purposes in and about buildings where a person or persons
live, work or assemble; all piping, fixtures, appurtenances and appliances outside
a building connecting the building with the source of water or gas supply, or both,
on the premises, or the main in the street, alley or at the curb; all piping, fix-
tures, appurtenances, appliances, drain or waste pipes carrying waste or sewage
from or within a building to the sewer service lateral at the curb or in the street
or alley or other disposal terminal holding private or domestic sewage; (2) The
installation, repair and maintenance of all piping, fixtures, appurtenances and
appliances in and about buildings where a person or persons live, work or assemble,
for a supply of gas, water, or both, or disposal of waste water or sewage.
PLUMBING FIXTURES: Plumbing fixtures are installed receptacles, devices, or
appliances whic5 are supplied with water or which receive or discharge liquids or
liquid -borne wastes, with or without discharge into the drainagd system with which
they may be directly or indirectly connected.
PLUMBING INSPECTCflR: The "Plumbing Inspector" within the meaning of this Code is
any person employed by the city for the purpose of inspecting plumbing work and
installations in connection with health and safety laws as provided by this Code,
and who is licensed by the Texas State Board of Plumbing Examiners in accordance
with the Plumbing License Law of 1947.
POOL: A pool is a water receptacle used for swimming or as a plunge or other bath,
designed to accommodate more than one bather at a tame.
PCJTABLE IIATER: Potable water is water which is satisfactory for drinking, culinary,
and domestic purposes, and meets the requirements of the Health Authority having
jurisdiction.
PRIMARY AIR: The air introduced into a burner and which mixes with the gas before
it reaches the port or ports.
PUBLIC SEATER: A public sewer is a common sewer directly controlled by public
authority.
REGULATOR - GAS PRESSURE: A device for controlling and maintaining a uniform gas
supply pressure.
10.
RELIEF DEVICE: A safety device designed to forestall the develop,emt of a dangerous
condi ion in he medium being heated, by relieving either pressure, temperature,
or vacuum build -up in the appliance;
A. Pressure Relief Valve: An automatic device which opens or closes
• relief vent, depending on whether the pressure is above or below
• predetermined value,
B. Temperature Relief Va1ve.i
1. u;ibie Plu? Type. A device which opens And keeps open
a relief vent by the meltin!; or softening of a fusible
plu? or cartridge at a predetermined temperature.
2. ReseatinQ or Self- Closin¢ Type. An automatic device
which opens and closes a relief vent, depdndina on
wether the temperature is above or below a predeter-
mined value.
C. Vacuum Relief Valve: An automatic device which opens or closes a
relief vent depending on whether the vacuum is above or below a
predetermined value.
RELIEF OPENING: The opening provided in a draft hood to permit the ready escape
to the atmosphere of the flue products from the draft hoop in the event of no
draft, back draft, or stoppage beyond the draft hool, and to permit air into the
draft hood in the event of a strong chimney updraft.
RELIEF VENT: A relief vent is a vent the primary function of which is to provide
circulation of air between drainage and vent systems.
RETURN OFFSET: A return offset is a double offset installed so as to return the
pipe to its original alignment.
REVENr PIPE: A revent pipe (sometimes called an individual vent) is that part of a
vent pipe line which connects directly with an individual waste or group of wastes,
underneath or back of the fixture, and extends either to the main or branch vent
pipe.
RIMt A rim is an unobstructed open ed7e of a fixture.
RIS -:R: A riser is a water- supply pipe which extends vertically one full story or
more to convey water to branches or fixtures.
ROOM Cat SPACE HEATER: A self - contained ryas - burning appliance installed in and for
heatin7 rooms. This definition shall not include unit heaters, central heatinm
gas appliances, -arane heaters, nor vented recessed heaters.
ROUGHING -IN: Rouching -in is the installation of all parts of the plumbing system
which can be completed prior to the installation of fixtures. This includes
drainage, water - supply, gas supply and vent piping, and the necessary fixture
supports.
SAFETY SHUT OFF VALVE: An automatic ?as control valve of the "on" and "off" type
which is actuated b7 -the limit or protective controls or similar emergency devices.
SAND INrERCEPTCR: See Interceptor.
SANITARY SEIM : A sanitary sewer is a pipe which carries sewage and excludes storm,
suurface,�anc- ground water.
11.
r
SECOND HAND: Second hand, as applied to material or plumbing equipment, is that
which has been used.
SECONDARY AIR: The air externally supplied to the flame at the point of combustion.
SEMI -RIGID TUBING: A gas conduit having semi- flexible metal wall structure.
SEPARATOR: See Interceptor.
SEPTIC TAWK: A septic tank is a watertight receptacle which receives the discharge
R W -dra inage system or part thereof, and is designed and constructed so as to sep-
arate solids from the liquid, digest organic matter through a period of detention,
and allow the liquids to discharge into the soil outside of the tank through a
system of open -joint or perforated piping, or disposal pit.
SERVICE PIPE: The pipe which brings the gas from the gas main to the point of
delivery.
SERAGE: Sewage is any liquid waste containing animal or vegetable matter in sus-
pension or solution, and may include liquids containing chemicals in solution.
SHALL: The word "Shall" is a mandatory term.
SHUT OFF VALVE: See definition of Manual Gas Valve,
SIDE VENT: A side vent is a vent connecting to the drain pipe through a fitting at
an- angle not greater than 45 degrees to the vertical•
SLOPE: See Grade.
r
SOIL PIPE: A soil pipe is any pipe which conveys the discharge of water closets or
fixtures ures having similar functions, with or without the discharge from other fix-
tures, to the building drain or building sewer.
SOIL VENT: See Stack Vent.
SPECIFIC GRAVITY: As applied to gas, specific gravity is the ratio of the weight of
a given volume to that of the same volume of air, both measured under the same
conditions.
STACK: A stack is the vertical main of a system of soil, waste, or vent piping.
STACIS GROUP: Stack group is a term applied to the location of fixtures in relation
to the ssttacT so that by means of proper fittin;s, vents may be reduced to a minimum.
STACH VENT: A stack vent (sometimes called a waste vent or soil vent) is the exten-
sio`� n of, a soil or waste stack above the highest horizontal drain connected to the
stack.
STACK VENTING: Stack venting is a method of venting a fixture or fixtures through
the soil or waste stack.
STOP COCK: See definition of Manual Gas Valve.
SUMP: A sump is a tank or pit which receives sewage or liquid waste, located below
the normal grade of the gravity system and which must be emptied by mechanical
means.
12.
SUPPORTS: Supports, hangers, and anchors are devices for supporting and securing
pipe and fixtures to walls, ceilings, floors, or structural members.
THERMOSTAT: An automatic device actuated by temperature changes, designed to con -
troi�tse� ga—s supply to a burner or burners, in order to maintain temperatures
between predetermined limits.
TRAP: A trap is a fitting or device so designed and constructed as to provide,
when properly vented, a liquid seal which will prevent the back passage of air
without materially affecting the flow of sewage or waste through it.
TRAP SEAL: The trap seal is the maximum vertical depth of liquid that a trap will
retain, measured between the crowm weir and the top of the dip of the trap.
UNIT HEATER: A self - contained gas burning appliance of the fan type, designed for
the delivery of warm air directly into the space in which the appliance is located.
UNIT VENT: See Common Vent.
VACUUM BREAICZ: An automatic device which prevents back siphonage by admitting air
to relieve a partial vacuum in a water supply pipe.
VALVE: See definition of Manual Gas Valve.
VENT: (Formerly Flue or Vent) A passageway, vertical or nearly so, such as a
chimney or gas vent, for exhausting vent gases to the outer air.
VENT CCNNECTCR: (Formerly Flue or Vent Connector) That portion of the vent system
whic connects the gas appliance to the has vent or chimney.
VENT GASES: (Formerly Flue Cases) Products of combustion from gas appliances plus
excess air, plus dilution air in the vent connector, gas vent or chimney above the
draft hood or draft regulator.
VET : See Vent System.
VENT STACK: A vent stack is a vertical vent pipe installed primarily for the pur-
pose ?oviding circulation of air to and from any part of the drainage system.
VENT SYSTEM - GAS PLUMBING: The gas vent or chimney and vent connector, if used,
assembled— to form a continuous open passageway from the gas appliance to the out-
side atmosphere for the purpose of exhausting vent gases.
VENT SYSTEM - SANITARY PLUMBING: A vent system is a pipe or pipes installed to
provide a flow of air to or f rom a drainage system or to provide a circulation
of air within such system to protect trap seals from siphonaae and back pressure.
VENTED RECESSED HEATER: A self- contained vented appliance complete with grilles or
equivalent, designed or incorporation in or permanent attachment to a wall, floor,
ceiling or partition, and furnishing heated air circulated by ^ravity or by a fan
directly into the space to be heated through openings in the casin57. Such appliances
shall not be provided with duct extensions beyond the vertical and horizontal
limits of the casing proper, except that boots not to exceed 10 inches beyond the
horizontal limits of the casing for extension through walls of nominal thickness
may be permitted. 11here such boots are provided they shall be supplied by the
manufacturer as an integral part of the appliance and tested as such. This defini-
tion shall exclude floor furnaces, unit heaters and central furnaces as herein
defined.
13.
VERTICAL PIPE: A vertical pipe is any pipe or fitting which is installed in a
vertical position or which makes an angle of not more than 45 degrees with the
vertical.
WALL IMATER, UNVENTED OPEN -FLAME RADIANT TYPE: A room heater of the open front
type, designed for insertion in or attachment to a wall or partition having' fully
exposed flames the heat from which is reflected by ceremic radiants or a metal,
asbestos, clay back or equivalent backwall reflecting surface. It incorporates no
concealed venting arrangements in its construction and discharges all products of
combustion, through the open from into the room being heated.
WASTE: See Liquid Waste and Industrial Wastes.
!TASTE PIPE: A waste pipe is a pipe which conveys only liquid waste, free of fecal
matter.
MATER DISTRIBUTING PIPE: A water - distributing pipe in a building or premises is
a pipe which conveys water from the water- service pipe to the plumbing fixtures
and other water outlets.
WATER MAIN: The water (street) main is a water - supply pipe for public or
community use,
WATER OUTLETS: Water outlet, as used in connection with the water - distributing
system, is the discharge opening for the water (1) to a fixture; (2) to atmos-
pheric pressure (except into an open tank which is part of the water- supply system);
(3) to a boiler or heating system; (4) to any water - operated device or equipment
requiring water to operate, but not a part of the plumbing system.
WATER RISER PIPE: See Riser.
!-DATER- SERVICE PIPE: The water- service pipe is the pipe from the water main or
other source o water supply to the building servedl
',VATER- SUPPLY SYSTEM: The water - supply system of a building or premises consists
of the water - service pipe, the water - distributing pipes, and the necessary connec-
ting pipes, fittings, control valves, and all appurtenances in or adjacent to the
building or premises.
MT VENT: A wet vent is a vent which also serves as a waste.
YARD LINE - GAS PLUMBING: The section of consumer's piping and fittings extending
From the point o delivery to the house piping.
YOKE VENT: A yoke vent is a pipe connecting upward from a soil or waste stack to
a vent stack for the purpose of preventing pressure changes in the stacks.
14.
CHAPTER 5
LICENSING REQUIREMENT
511 PLUMBING LICENSE REQUIRED
5.1,1. All persons who engage in or work at the actual installation, alteration,_
repair and renovating of plumbing shall possess either a master or journeyman
plumber's license in accordance with the provisions of the Plumbing License Law of
1947.
CHAPTER 6
1rX IMPTED ACTIVITY
6.1 EXEMPTICNS: The following acts, work and conduct shall be expressly permitted
without license:
6.1.1. Home Owner: Plumbing work done by a property owner in a building owned
or occupied by him as his home.
6.1.2. Maintenance, Utility and Appliance Work: Plumbing work done by anyone
who is regularly employed as or act n; as a maintenance man or maintenance engineer,
incidental to and in connection with the business in which he is employed or engaged,
and who does not engage in the occupation of a plumber for the general public;
construction, installation and maintenance work done upon the premises or equip-
ment of a railroad by an employee thereof who does not enQige in the occupation of
a plumber for the general public; and plumbing work done b} persons engaged by any
public service company in the laying, maintenance and operation of its service
mains or lines and the installations alteration, adjustment, repair, removal and
renovating of all types of appurtenances, equipment and appliances; appliance in-
stallation and service work done by anyone who is an appliance dealer or is employ-
ed by an appliance dealer, and acting as an appliance installation man or appliance
service man in connecting appliances to existing piping installations.PROVIDED,
HWEVER, THAT ALL WORX AND SERVICE HEREIN NXMD CR REFERRED TO SHALL BE SUBJECT
TO INSPECTION AND APPROVAL IN ACCORDfa CE 111TH T!-M7 TERMS OF ALL LOCAL VALID CITY CR
MUNICIPAL ORDINANCES.
CHAPTER 7
AD1•1I NI STIRATI ON
7.1, PLUMBING INSPECTOR: The office of Plumbing Inspector is hereby created to
administer and eZo -rce this code. The Mayor shall appoint the Plumbing Inspector
and any assistants necessary to aid him in the discharge of his duties. Such
appointment shall be subject to confirmation by the City Council. The person chosen
to fill this office shall be of good moral character; shall be possessed of such
executive ability, training and experience as is required for the performance of
his duties in the enforcement of this code. He shall receive such compensation and
serve for such term as may be fixed by the governing body; and execute and deliver
to the city a surety bond in the principal amount of $1,000.00 conditioned upon the
diligent and honest performance of the duties required by this code, or any other
ordinance or law. The bond premium shall be paid by the city and the bond shall be
satisfactory to the governing body. He shall hold and keep in force a Plumbing
Inspector's License issued by the State Board of Plumbing Examiners.
15.
7.2. PRCHIBI7ED IP.*T' RESTS: The Plumbing Inspector shall not work for or be connec-
ted or associated M th any master plumber, plumbing manufacturer or wholesale
plumbing and supply company or do any plumbing work while employed as a Plumbing
Inspector.
7.3. DUTIES OF II`TSPECTCr,,: The duties of the Plumbing Inspector or assistant plumb-
ing ins ctor sha 1 be to receive, approve and countersign, either in person or by
an authorized representative, all applications and collect all fees for permits to
do plumbing, or make sewer connections in the city, or outside the boundaries of
the city, if connections are made to either the city water or sewer systems; also
to personally inspect and pass on all plumbing work, and sewer connections now in
use or being constructed, or which may hereafter be constructed in the city, or
outside the boundaries of the city, if connections are made to either the city
water or sewer systems, and to issue his certificate of approval thereof, if he
shall approve the same, or, if he shall not approve the same, to direct, by written
order, the owner or agent in charge of any building or premises, where imperfect
plumbing, including water, sewer or gas piping, may be located, or the plumber in
charge of such construction to stop the use or construction of same until it shall
have been properly repaired or constructed in accordance with the provisions of
this code; to investigate all alleged violations of the plumbing ordinances; to file
complaints against all persons whom he may have reason to believe have violated
any of the plumbing or sewer ordinances of the city. Assistants inspectors of
plumbing shall perform all of the duties and have all of the powers of the Plumbing
Inspector.
7.4. Pa'7E:S OF INSPECTCR: The Plumbing Inspector shall have the power and it shall
be his duty, where any auilding, premises or construction contains improper or de-
fective plumbing or where same has been constructed, erected, altered or repaired
without a permit as provided by this code, to give prompt written notification to
the utility involved to cut off the water or gas supply thereto until such improper
or defective plumbing shall be made to comply fully with the provision of this code,
and a certificate of the Plumbing Inspector shall have been issued.
7.5. LIABILITY OF INSPECTOR: Where action is taken by the Plumbing Inspector to en-
force the provis one o this code, such action shall be in the name of, and on be-
half of, the city, and the Inspector in so acting shall not render himself person-
ally liable for any damage which may accrue to persons or property as a result of an
action committed in good faith in the discharge of his duties, and any suit brought
against any inspector by reason thereof shall be defended by the City Attorney until
final determination of the proceedings contained therein.
7.6. AUTHCRITY OF INSPECTOR: The Plumbing Inspector shall have the right to enter
any bui din. or premises at any reasonable time in the discharge of his official
duties, or for the purpose of making any inspection, re- inspection, or test re-
quired by this code.
CHAPTER 8
PLUI•I1;ING AP?EALS AND ADVISCRY BOARD
8.1. ORGANIZATION OF BOARD: There is hereby created a six member Plumbing Appeals
and Advisory Board consisting of:
(1) A licensed Master Plumber
(2) A licensed Journeyman Plumber
(3) A building contractor
(4) The City Engineer
(5) The City Health Officer
(6) A licensed architect or alternate selection (See Paragraph 8.1.3.)
16.
8.1.1. Ex- officio Membert The Plumbing; Inspector shall be an ex- officio, non-
voting member V said Board.
8,1.2. A ointment and Terms of Office: Members of the Board and their successors
shall be appointed by the 1syor and confirmed by the City Council and shall hold
office for terms of 4 years, or until their successors are appointed and have
qualified; except, the members of the Board first appointed shall hold office, two
for two years and two for four years as determined by the Mayor in making said
appointments.
841.3. Alternate Selection: If a licensed architect or registered engineer is not
available the .1ayorappoint such other lay person as he deems qualified to
serve as a representative of the general public.
8.1,4. eligibility to Serve: The City Engineer and the City Health Officer shall
be eligible to serve only so long as they hold office.
8.1.5. Compensations All members shall serve without compensation.
8.2 Bi13CTI M OF OFFICERS AND ADOPTION OF R ULESt The members of the Board shall
meet as soon ter the r appointments as practicable for the purpose of or- aniza-
tion. The Board shall formally elect a chairman, i vice chairman, and a secretary
from its members and may adopt such rules as it deems necessary for the orderly
conduct of its affairs, A full and complete record of the proceedings of said
Board shall be kept, A majority of the Board shall constitute a quorum for the
transaction of business.
8.3. DUTIES AND Parrms Oi= "m EOArD
8.3.1 Right of Appealt Any person, firm or corporation aggrieved by any
interpretatio of—this code or by any decision or ruling by the Plumbing Inspector
under this code shall have the right to make an appeal to the Plumbing Appeals
and Advisory Board,
8.3.2. Hearin-,s by the Board: Within a period of ten (10) days from the
filing of the appeal the Board shall hear the appeal, together with the testimony
of all parties concerned, and render a decision thereon within three (3) days
thereafter. In hearing such an appeal, the Board shall not have the power to
waive or set aside the requirements of this code but shall have the power to in-
terpret its provisions and in case of alternate types of construction or materials,
shall determine whether or not such alternate type of construction or material is
in fact equal to the standards of this code, considering adequacy, stability,
sanitation and safety to the public health and welfare. Any person, firm or cor-
poration who may be aggrieved by the decision of the Board shall have a right of
appeal to the City Council within ten (10) days from the rendition of such de-
cision. Said appeal shall be perfected by written notice addressed to the Mayor
and City Council asking for a hearing by the Council, and the action of the City
Council thereon shall be final.
8.30. Advisory Res onsib_illiit,z of the Board: The Board shall submit to the
City Council such recommendations for the improvement and revision of this code
as it may from time to time deem necessary and proper in light of the develop-
ment of new materials, methods or techniques which would result in a better and
more economical installation. All requests for use of materials or methods not
covered in this code shall be fully supported by factual evidence, or prior appro-
val, from a recognized testing agency or such impartial qualified authority
acceptable to the Board.
17.
CRAM ER 9
PBPMETS AND FEE=S
9.1. P3PS,TTS
9.1.1. Permits Required:
A. It shall be unlawful to construct, install or cause to be
installed any plumbing as defined herein Without first se-
curing a plumbing permit therefor except as otherwise pro-
vided in Section 9.1.2.
B. It shall be unlawful for any person to make any extension
to any lines or pipes, using crater from City water mains,
whether within or without the corporate limits of the city,
or to add any pipes or to change any pipes or lines from
a water line, apartment, house, premises, or meter without
first securing a permit for such changes except as otherwise
provided in Section 9.1.2,
C. Permits shall be required for the replacement of water heaters.
9.1.2. Permits Not Required: No plumbing permit is required to do minor re
pairs such as the maintenance, repair or replacement in kind of the following:
(1) Yard hydrants and sill cocks.
(2) Flush valves and float -balls in water closet tanks.
(3) Accessible traps on lavatories or sinks.
(4) Replacing of plumbing fixtures where no change in "roughing -in" is
involved except replacement of water heaters. (See Paragraph 9.1.1, C)
The above examples are representative only and should not be considered as
a limitation on the term "minor repairs."
9.1.3. Issuance of Permits: The Plumbing Inspector or his designated representa-
tive shall issue a plumb -�ing permits in accordance with the provisio — and re-
quirements of this code. All applications for permits shall give the correct lo-
cation of the building, name of the owner of such building, and a complete state-
ment of the work and fixtures to be installed. The Plumbing Inspector may require
a complete plan of the work to be performed if considered necessary.
9.1.4. Special Permits Authorized: A special permit may be issued by the
Plumbing Inspector, in writing, when lumbing cannot be installed in accordance
with all of the provisions of this code, if in his judgement the conditions require
it. Application for this type permit shall be made in writing accompanied by a
sketch showing the work to be done; said sketch must be kept on file in the Plumb-
ing Inspector's office, In other work pertaining to, but not specifically covered
by this code, the Plumbing Inspector may prescribe such specifications as may be
necessary and shall be consulted before any work is started.
9.1.5. Persons 1.9ho May Obtain A. Permit; Permits shall be issued only to the
following:
(1) Any blaster Plumber licensed by the State Board of Plumbing Examiners.
(2) Any property owner for plumbing work to be done by him in a build-
ing owned or occupied by him as his home.
(3) Any appliance dealer or employee of an appliance dealer who is
acting as an appliance installation man or appliance service man
in connecting appliances to existing piping installations.
18.
9.1.6. Permits Not Transferable: Each permit issued under this code shall be per-
sonal to the a =ttee. Ro such permit shall be assigned or transferred to another
person and no person shall permit another.person to obtain a permit in his name,
or permit any plumbing or gas fitting work to be.performed under his permit by any
person other than a person authorized to do the same.
9.1.7. False Statement of Bad Faith: Any person who shall wilfully make any false
statement in or ear to obta=n a mr it shall be guilty of a misdemeanor and subject
to the penalty provided herein. Bad faith or unreasonable delay in the performance
of plumbing work shall be deemed a sufficient reason for subjecting the plumber
so offending to a suspension of the permit and no further permit shall be issued
until such act of bad faith or unreasonable delay has been corrected.
9.1.8 Duration of Permits Every permit issued under the provisions of this code
shall expire days alter the date thereof unless the work authorized by such
permit shall have been commenced within such time; and every permit shall expire
if the work authorized by such permit is suspended or abandoned for as long as
90 days after it has been commenced. In every case where a permit is permitted to
expire, a new permit shall be obtained before Any work is resumed.
9.2. FEES
9.2.1. Permit and Inspection Fees: The permit and inspection fees herein
provided shall pa— to the ity before the issuance of a permit and before any
work is started. The feew shall be as follows:
Residential: One Bath, $8.00, One and One Half Bath, $10.00, Two Bath, $12.00.
Commercial: A fee of $1.00 for one sewer, fixture or roughing -in and 750 for
each add tionai sewer, fixture or roughing-in the same buildinry. By the term fix-
ture, as used herein, shall mean each water closet, sink, bath tub, basin (lavatory)
or section of basin in battery, water closet, urinal, lavatory, shower bath, drinking
fountain, electric water cooler, soda fountain, laundry tray, washing machine, sand
traps, catch basins: ±sump, glop sink, dental unit with cuspidor, dish washing mach-
ine, wall heater, water softener, garbage disposal, floor drains, cellar drains,
septic tanks, sewers, waste and water for any air conditioner or refrigerator, and
all other receptacle, appliance or appurtenance having a waste and water connection.
A fee of $1.00 for an outside yard closet. A fee of one dollar $1.00 for each
trapped connection designed and constructed to provide a connection for one to
four trailer coaches. A fee of $1.00 for each lawn sprinkler system up to 15
sprinkle heads and ten cents 100 for each additional head. A fee of five dollars
$5.00 for the construction of a water well and appurtenances. A fee of two dollars
$2.00 for any gas piping in any building up to fifteen, 15, openings, and ten cents
100, for each additional opening. A fee of two dollars, $2.00, for extensions,
alterations and repairing of ea.s piping. A fee of one dollar, $1.00 for the first
unit and seventy five cents, 750, for each unit in the same building for all insert
wall heaters, floor furnaces, contral heating units, suspended heating units using
natural gas as fuel and all other gas fired appliances having a floor or wall
register which requires a special vent pipe/
19.
CHAPTER 10
SCNDIIp PROVISIM
10.1. BaJD REQUIRED: Before any person, firm or corporation shall engage in the
business o plug in the City, he,it, or they shall first obtain the proper
license and deposit with the City a good and sufficient bond in the sum on One
Thousand ($1,000.00) Dollars, conditioned that the person, firm or corporation
engaged in the plumbing business will faithfully observe all the laws pertaining
to plumbing; further, that the City shall be indemnified and saved harmless from
all claims arising from accidents and damage of any character whatsoever caused
by the negligence of such person, firm or corporation engaged in the plumbing;
business, or by any other unfaithful inadequate work done either by themselves
or their agents or employees.
CHAPTER 11
M -IMRAL REGULATIONS
11.1 CONFCPIMWE WITH CODE: All plumbing systems hereafter installed shall conform
with the provisions of this code.
11.2 FITTINGS AND CONNECTIONS
11.2.1. Fittings for Change in Direction: Changes in direction in drainage
piping shall be made by appropriate use ot45- degree wyes or 1/2 wyes, long or
short sweep quarter bends, sixth, eighth, or sixteenth bends, or by a combination
of these or equivalent fittings. Single and double sanitary tees and quarter
bends may be used in drainage lines only where the direction of flow is from the
horizontal to the vertical.
11.2.2. Change of Direction Table: The fittings in Figure 1 are used for
changing direction as follows: __...�
Diameter of Pipe Direction Install
Drainage - any size Horizontal to Quarter bend or
Vertical 90 degree short
Vent - an size Any direction turn
3 inch or more Vertical to Short sweep or
Horizontal 90 degree long turn
3 inch or less Vertical to drainae elbow
Horizontal Long sweep or extra
long turn elbow
CAST IRON SOIL FITTINGS CAST IRON DRAINAGE FITTINGS
20.
11.3 PRCFAIBITED FITTINGS AND CaMECTIONS
11.3.1. Fittings: No fitting having a hub in the direction opposite to flow,
or tee branch shall be used as a drainage fitting. No runninu threads, bands, or
saddles shall be used in the drainage system. I•Io drainage or vent piping shall be
drilled or drilled and tapped.
11.3.2. Neel or Side -Inlet Bend: A heel inlet quarter bend shall not be used
as a vent when the inlet is In a horizontal position.
11.3.3. Obstruction to Flow: No fittinp, or connection which offers abnormal
obstruction to 'll�ow shall be permitted.
11.4 yXISTING BUILDINGS
11.4.1. Provision For Code Deviations; In existing buildings or premises in
which plumbingR n� stallations are to be altered, repaired, or renovated, necessary
deviations from the provisions of this code may be permitted, provided such de-
viations conform to the intent of the code and are approved by the Plumbing
Inspector.
11.5. SE IER AND JAMB PIPES
11.5.1. Separate Sewer Ditch: Mater - sery -ce pipes, or any under -round water
pipes, shall not be run or laid in the same trench as the buildin- sewer or drain -
age pipin?, except as provided for in Paranraph 19.4.11 and Paragraph 20.2.2.
11.5.2. Dama7e to Drainage System or Public Sewer: It shall be unlawful for
any person to deposit by any means into the building drainage system or sewer any
ashes, cinders, rags, inflammable, poisonous, or explosive liquids, gasses, oils,
grease, or any other material which would or could obstruct, damage, or overload
such system or sewer.
11.6 'DATER CLOSET COPJLIXTIONS
11.6.1, Lead: Three -inch extra heavy lead bends and stubs may be used on
water closets or similar connections, provided the inlet is dressed or espanded
to recieve a 4 -inch floor flange.
11.6.2. Rigid: Fall outlet water closets may have rigid connections of approved
manufacture.
11.6.3. `:educing: Four -by three -inch extra heavy lead or approved copper
reducing bends are permitted.
11.7 RAT P_^,OF?IIIG: ?!here this term is used, it shall also mean mouse proofing.
11.7.1. exterior eninSs: All exterior openin ^s provided for the passage
of piping shall be properly sealed with snu7ly fitting collars of metal or other
approved rat -proof material securely fastened into place.
11.7.2. Interior Openings: Excess space around pipe openinns through walls,
floors, or ceilinn shall be chinked or closed by the use of ordinary masonry mor-
tar when and where possible. 'There this is not practical, the Plumbing Inspector
shall prescribe an alternate method and material.
21.
12.1. I::AMMIALS
CHA 11i 12
I ATBRIALS - QUALITY AND *:►BIGHT
12.1.1. I:iinimur Standards: The materials listed in this Chapter shall conform
at least to the standards cited when used in the construction, installation, alter-
ation, or repair of any;.part of a plumbin? and draina7e system, except that the
Inspector shall allow the extension, addition, or relocation of existin7 soil, waste,
or vent pipes with materials of like -rade or quality.
12.1.2. Use of I::aterials: The following Table outlines permissible materials for
various uses subject to the restrictions of the following chapters.
12.1.3. Taterials ITot Listed: Paterials other than those listed for the various
uses may be permitted upon approval of the plumbing Appeals and Advisory Board.
12.1.4. f :FTB :IALS MD US::-": See Table, Pa -e 23.
CHAPTBII 13
JOIiiTS Aim canT..CTIONS
13.1 GLIMAL
13.1.1, Ti-,htness: Joints and connections in the plumbing system shall be
,asti ^ht and watertight for the pressures required by test, with the exception of
those portions of perforated or open -joint pipinm which are installed for the pur-
pose of coliectin7 and conveying ?rotind or seepa -e water to the under -round storm
drains.
13.2. TYPES OF JOINTS
13.2.1. Calked Joints: Calked joints for cast -iron bell- and - spigot soil pipe
shall be firmly packed wit71 oa %uin or I�emp and filled with nolten lead not less than
1 inch deep and not to extend more than 1/U inch below the rim of the hub. Ho paint,
varnish, or other coatin <;s shall be permitted on the jointin7 material until after
the job haS been tested and approved.
13.2.2. Threaded Joints: Threads shall conform to American National Taper Pipe
Thread, AS1. B2�' 1- 9 5 or FS 'GCG- P -351a. All burrs shall be removed. Pipe ends shall
be reamed or filed out to size of bore, and all chips shall be removed. Pipe -joint
cement and paint shall be used only on male threads.
13.2.3. Jiped Joints: Joints in lead pipe or fittings, or between lead pipe
or fittings and rb ass or copper pipe, ferrules, solder nipples, or traps, shall be
full -wiped joints. :Wiped joints shall have an exposed surface on each side of a
joint not less than 3/4 inch and at least as thick as the material being jointed.
:Tall or floor flange lead-wiped joints shall be made by using a lead ring or flange
placed behind the joint at wall or floor. Joints between lead pipe and cast iron,
steel, or wrou -ht iron shall be made by means of a calking ferrule, soldering
nipple or bushin?.
22.
1-1
12.1.4 MATERIALS AND USES: +�' +° o y
-c � �` e
a ,r p
30 , 4J U m y of VJ GO y L y
!, �+ V C d A. 3 b
0 '' V
y� y 40 D 0 4�, 3e +fi
Apr Qi
,yo Zo
Cla .Sewer Pipe
X
X
X
Concrete Sewer Pipe
X
X
X
Bituminized Sewer Pipe
X
X
X
Asbestos Cement Pipe
X
*
X
X
X
Cast Iron Soil Pipe & Fitting
X
X
X
X
X
X
X
X
X
X
Cast Iron (Threaded) Pipe
X
X
X
X
X
X
X
Cast Iron Water Pipe & Fittings
I
X
Cast Iron Screwed Fittings
*
X
Cast Iron (Drainage) Fittings
X
Wrought Iron Pipe Galvanized
X
X
Steel Pie Galvanized
I X
I
X
X
X
Ix
X
X
Open Hearth Iron Pipe
I
Ix
Ix
X
X
Ix
Ix
X
Malleable Iron Fittings Galvanized
X
X
X
X
Ix
Ix
Malleable Drainage Fittings
X
X
I
X
X
Brass Pipe I.P.S. & Screwed Fittings
X
ix
Ix
X
X
X
X
X
X
X
Copper Pipe I.P.S.
y,
Ix
Ix
Copper Water Tube & Wrought Copper
Fittings e K or L
X
X
X
ix
X
X
R
Soldered Joint Fittings - Copper,
Brass & Bronze
X
X
X
X
X
X
X
Cast Brass Flared Type Fittings
X
Ix
Ix
Solder Joint Drainage Pattern
Fittings Brass
X
X
X
X
X
X
X
X
Copper Tube e M
X
X
X
X
Copper Tube Type DWV
X
X
X
X
Copper Tube Type L
X
X
X
Ix
X
Ix
X
X
X
Copper Tube e K
X
X
X
Ix
X
Ix
X
X
X
Lead Pipe
?L
X
X
I
X
X
Steel Pipe Cement Lined
*
X
X
Plastic Sched 80 PVC. or UPVC
X
Plastic Polyethylene
Glass of Approved Manufacture
Plastic Pipe - CS- 228 -60
* May be used for large size service lines and private distribution systems
(3 inches or larger)
23
13.2.4. Solder or Sweat Joints: Solder or sweat joints for tubing shall be
made with approved fittin3s. Surfaces to be soldered or sweated shall be cleaned
bright. The joints shall be properly Fluxed and made with approved solder. Joints
in copper water tubing shall be made by the appropriate use of approved brass
water fittings, properly sweated or soldered together;
13.2.5. dared Joints: ?lared joints for soft - copper water tubin- shall be
made with fittings meeting approved standards. The tubing shall be expanded with
a proper flaring tool.
13.2.6. Hot- ?oured Joints: Hot- poured compound for clay or concrete sewer
pipe shall not be water absorbent and when poured a7ainst a dry surface shall have
a bond of not less than 100 pounds per square inch. All surfaces of the joint shall
be cleaned and dried before pouring. If wet surfaces are unavoidable, a suitable
primer shall be applied. Compound shall not soften sufficiently to destroy the
effectiveness of the joint when subjected to a temperature of !600 F nor be soluble
in any of the waste carried by the drainage system. Approximately 25 per cent of the
joint space at the base of the socket s'_:all be filled with jute or hemp. A pouring*
collar, rope, or other device shall be used to hold the hot compound durin, pourinry.
Each joint shall be poured in one operation until the joint is filled. Joints shall
not be tested until one (1) hour after pouring.
13.2.7. Cement Ilortar Joints: Cement joints shall be used only when specifi-
cally permitted in other chapters of this code or when approved by the Plumbinry
Inspector, as sufficient to accomplish the purpose of this code. A layer of jute
or hemp shall be inserted into the base of the jpint space and rammed to prevent
mortar from entering the interior of the pipe. Jute or ":_emp shall be dipped into
a slurry suspension of Portland cement in water prior to insertion into bell. Not
more than 25 per cent of the joint space shall be used for jute or hemp. The re-
maining space shall be filled in one continuous operation with a thorou.-hly mixed
mortar composed of 1 part cement and 2 parts of sand, with only sufficient water
to make the mixture workable by hand. After 1/2 hour of setting, the joint shall
be rammed around the entire periphery with a blunt tool to force the partially
stiffened mortar into the joint and to repair any cracks formed during the initial
setting period. Pipe interior shall be swabbed to remove any material that mizht
have fallen into the interior. Additional mortar of the same composition shall
then be troweled so as to form a 45- degree taper with the barrel of the pipe.
13.2.8. Asbestos- Cement Sevier -Pipe Joints: Joints in asbestos - cement pipe
shall be made with sleeve couplin7s a the same composition as the pipe, sealed
with rubber rin7s. Joints between asbestos - cement pine and metal pipe shall be
made by means of an adapter coupling calked as rewired in Para -;rapt 13.1.1.
13.2.9. Dituminized -fiber Pipe Joints: Joints in bitumini zed - "`fiber pipe shall
be made with tapered -type couplin.;s o? the same material as the pipe. Joints be-
tween bituminized -fiber pipe and metal pipe shall be made ay means of an adapter
couplin; calked as required in Para?raph 13.2.1.
13.2.10, Plastic Pipe: Joints between plastic pipe and fittin -s shall be
made by one of the foilowin methods:
A. The solvent weld method, with socket type fittings molded of the
same materials as the pipe.
B. Insert fitings and stainless steel clamps.
C. Screw type plastic fittin;;s on threaded plastic pipe.
Each type of joint shall be made in accordance with manufacturer's published
recommendations.
24.
CHAPTER 14
T'.P.PS AND CL AI40UTS
14.1 .'TMitAPS
14.1.1. General Regulations: Plumbing fixtures, excepting those having integral
traps, shall be separately trapped by a water seal trap, placed as close to the fix-
ture as possible.
A. Provided, that a combination plumbing fixture may be installed
on one trap, if one compartment is not more than six (6) inches
deeper than the other and the waste outlets are not more than
thirty (30) inches apart6
In the case of a twb- compartment sink with a food -waste disposer under one
compartment, it is best to use a directional fittin -.
B. Provided, that one trap may be installed for a set of not more than
three single- compartment sinks or laundry trays or three lavatories
immediately adjacent to each other in the same room, if the waste
outlets are not more than 30 inches apart and the trap is centrally
located when three compartments are installed.
14.1.2. Vertical Distance of Trap to Fixture: The vertical distance from the
fixture outlet to the trap weir shall not exceed 24 inches. The same principle
applies to the distance from an integral fixture trap, as in a water closet, to the
connection with a horizontal drain,
14.2 PIXTUP,E TRAPS
14.2.1. P Traps:Approved types of P traps of the same, or larger, diameter of
the fixture drain may be used.
14.2.2. Drum Traps: Drum traps shall not be less than 3 inches nor more than
4 inches in diameter with at least a 2 -inch water seal. The trap screw shall be
one size less than the trap diameter.
14.2.3. Trap Seals: Each fixture trap shall have a water seal of not less
than 2 inches and not more than 4 inches, except where a deeper seal is found
necessary by the Plumbing Inspector for special conditions.
14.2.4. Self -Clear ning: Fixture traps shall be self - cleaning.
14.2.5. Slip Joints: Slip joints or couplin -s may be used on the trap inlet or
within the trap seal.
14.2.6. Prohibited Traps:
A. No trap which depends for its seal upon the action of movable
parts shall be used.
B. Full S -traps are prohibited.
C. Bell traps are prohibited.
D. Crown - vented traps are prohibited.
25.
14.3 PIPE CLEANOUTS
14.3.1. Underground Drain: Cleanouts, when installed on an underground drain,
shall be extended to or above the finished grade directly above the place where the
cleanout is installed; or they may be extended to the outside of the building when
found necessary by the Plumbing Inspector. Distance between cleanouts not to exceed
50 feet.
14.3.2. Buildinry Sewer: A cleanout of the same nominal size as the pipe, up
to 4 inches and not less than 4 inches for larger pipe, shall be installed at the
junction of the building (house) drain and the building sewer.
14.3.3. Change of Direction: A cleanout shall be installed in horizontal
drainage piping at each change of direction greater than 45 degrees, provided that
cleanouts may be installed at the end of branch lines if the change of direction
in the branch is made with two 1/8 bends or with a wye and 1/8 bend and is not
more than 40 feet from the cleanout. Test tees may be used for cleanouts where
practical.
14.3.4. Concelaedd Pipiing:. Cleanouts on concealed piping shall be extended
through and term nate if ush with the finished wall or floor or brought to grade.
Pits or chases may be left in the wall or floor, provided that they are of suffi-
cient size to permit removal of the cleanout plug and proper cleaning of the system.
14.3.5. Base of Stacks: A cleanout shall be provided at or near the foot of
each sink waste stack,
14.3.6. Direction of Flow: Every cleanout shall be installed to that the
cleanout opens in a direction opposite to the flow of the drainage line or at
right angle thereto.
14.3.7. Cleanout Pluis: Cleanout plugs shall not be used for the installa-
tion of new fixtures or loor drains except where approved by the Inspector.
CHAPTER 15
INTERCEPTORS AND BAC "TIATM VALVES
15.1 INTERCEPTCRS AND SEPARATOrS
15.1.1, 11hen Required: Interceptors (includin- grease, oil, and sand inter-
ceptors, etc.3shal2Ibe provided when, in the judgement of the Plumbing Inspector,
they are necessary for the proper handlin7 of liquid -borne wastes containing grease,
flammable waste, sand, or other elements harmful to the building drainage system,
the public sewer, or sewage- treatment plant or processes.
15.1.2. Residential Units: A grease interceptor is not required for individual
dwelling, units or private living quarters.
15.1.3. Venting Interceptors: Interceptors shall be so desi -ned that they
will not become air bound if closed covers are used. Each interceptor shall be
properly vented.
15.1.4. Accessibility of Interceptors: Each interceptor shall be so installed
as to provide ready accessibility to the cover and means for servicing.
26.
15.2 BAC "_` ?ATE_'. VALVES
15.2.1, Fixture Branches: Backwater valves shall be installed in the branch
of the building drain which receives only the dischar7e from fixtures located
within such branch and below grade and shall be so constructed as to insure a
mechanical seal against backflow. All bearinry parts shall be of bronze or other
corrosion resistent material.
15.2.2. Diameter: Backwater valves, when fully opened, shall have a capacity
not less than tha` t o? the pipes in which they are installed.
15.2.3. Location: Backwater valves shall be so installed as to provide ready
accessibility to their working parts.
CHAPTER 16
PLUiIBING FIXTURES
16.1. MICRAL MRQUI^.EN9,44 -1-S
16.1.1. Quality of Fixtures: Plumbing fixtur6s shah have smooth impervious
surfaces, be free rom defects and concealed foulih'- surfaces;
16.1.2. Supply Lines Protectedi The supply lines or fittings for every plumb-
inq fixture shall be so installe as to prebent backflow or back siphona ?e.
16.1.3. Prohibited Fixtures and Connections: Pan, valve, plumper, offset,
washout, latrine, rostproo , and other waste closets having an invisible seal
or an unventilated space or having walls which are not thoroughtly washed at each
dischar e, are prohibited. Any water closet which mi -Ilit permit siphona -e of the
contents of the bowl back into the tank shall be prohibited. Floor-type trou -h
urinals are prohibited.
16.1.4. Strainers _required: All plumbing fixtures, other than water closets
and siphon- action washdown or blowout urinals, shall be provided with metal
strainers.
16.1.5. 'Taste Outlets in Lavatories: Floor drains shall have approved metal
traps and a minimum water seal of 3 inches and shall be provided with removable
strainers. The open area of strainer shall be at least two - thirds of the cross
section area of the drain line to which it connects.
16.2. IIATr CLOSETS
16.2.1. Flush Tank Capacity: Water closet tanks shall have a flushing capacity
sufficient to properly flush the water closet bowl.
16.2.2. Float Valves: Float valves in lowdown tanks shall close tight and
provide water to properly refill the trap seal in the bowl.
16.2.3:•Close Coupled Tanks: The flush -valve seat in close coupled water
closet combinations shall be 1 inch or more above the rim of the bowl, so that the
flush valve will close, even if the closet trapway is clogged; or any closets with
flush valve seats below the rim of the bowl shall be so constructed that in case
of trap shorts -e, water will not flow continuously over the rim of t;ie bowl.
27
16.2.4. Automatic Flush Valves: Flush valves shall be so installed that they
will be readily accessible for repairin?. When the valve is operated, it shall
complete the cycle of operation automatically, openin, fully and closing positive-
ly under the service pressure. At each operation the valve shall deliver water in
sufficient volumne and at a rate that will thoroughly flush the fixture and re£ull
the fixture trap. I.,eans shall be provided for regulating flush valve flow. Not
more than one fixture shall be served by a single flush valve.
16.3 URINALS
16.3.1. Automatic Flushing Tank, ''then Required: Tanks flushing more than one
urinal shall Be automatic in operation and of sufficient capacity to provide the
necessary volumne to flush and properly cleanse all urinals simultaneously.
16.3.2. Urinals Equipped with Flush Valves: Flush valves shall be as prescribed
in Section 16.2.4 and no manually operated valve shall be used to flush more than
one urinal. Automatic electrically operated flush valves in a battery of urinals
may be controlled from one central control device.
16.3.3. Trough Urinals: Trough urinals shall be not less than 6 inches deep
and shall be urn shed with one -piece backs and have strainers with outlets at
least 22 inch in diameter. The washdown pipe shall be perforated so as to flush
with an even curtain of water against the back of the urinal. This pipe shall be
securely clamped as high as practicable to the back of the urinal. Trough urinals
with tanks shall have a flushinn capacity of not less than 1� 7allons of water
for each 2 feet of urinal length. Continuous water flow throe ^h perforated washdown
pipe may be used to flush trouryh urinals.
16.3.4. ^quivalent Length: Trough urinals shall be fi",ured on the basis of 1
urinal for each 18 inches of length; i.e.,
24 -inch trough
36 -inch trough
48 -inch trough
60 -inch trough
72 -inch trough
equals 1 urinal
equals 2 urinals
equals 2 urinals
equals 3 urinals
equals 4 urinals
16.3.5 Surrounding Materials: The wall and floor space to a point 1 foot in
fromt of urinal lip and 4 feet above the floor, and at least 1 Foot to each side of
the urinal, shall be lined with non absorbent materials.
3.6.4 FOCD '.IASTB MINIM. UNITS
16.4.1. Disposal Units. here a disposal unit is installed in one of the com-
partments of a two- compartment sink, the disposal unit shall discharge directly
into the trap and a continuous waste may be used for the other compartment.
16.5 DRI171CING FOUNTAINS
16.5.1. Design and installation: The jet of the fountain should issue from a
nozzle of non- oxidizinn, impervious material set at an an ' -le from the vertical
such as to prevent the return of water in the jet to the rifice or orifices from
whence the jet issues. The nozzle and every other openin^7 in the water pipe or
conductor leading to the nozzle should be above the edne of the bowl, so t'lat such
nozzle or opening cannot be flooded in case a drain from the bowl of the fountain
becomes clogged. The end of the nozzle should he protected by non - oxidizing -uards
to prevent the mouth and nose of the user from comin&I into contact with the nozzle.
28.
--1 -_1
16.5,2. Protection of "later Supply: Streams projectors shall be so assembled as
to provide an orifice elevation as specified by Lmerican Standard Air Gaps in Plumb-
ing Systems U SL x.40.14 -1942) and American Standard Backflow Preventers in Plumbin7
Systems. (GSA 1`.40.16- 1943).
16.6 SIMM-11, MEMPTCRS AND COI?ART MKT TS
16.6,1. Shower - Pan aequired: All shower compartments, except those built
directly on the ground or those having metal enameled receptors, shall have a
properly protected lead or copper shower pan or the approved equivalent thereof
or as determined by the Inspector or in the case of dwellings as approved by the
P.H.A. The pan shall turn up on all sides at least 4 inches above the finished
floor level or 3 inches above finished curb level whichever is the hi -hest. Traps
shall be so constructed that the pan may be securely fastened to the trap at the seep
age entrance mating a watertight joint between the pan and trap. Shower receptacles
waste outlets shall be not less than 2 inches in diameter and have removable strain-
ers,
16.6.2. On The Groundt Shower receptors built on the -round shall be constructed
from dense non - absorbent and non - corrosive materials and shall have smooth inper-
vious surfaces, or as provided in paragraph 16.6.11
16.7 SPECIAL F I1,:.' IRIS
16.7.1. Specialties: Baptistries, ornamental and lily ponds, aquaria, orna-
mental fountain basins and similar constructions, when provided with water supplies,
shall be protected from back-8iphona -e as required in Paragraph 19.2 or 19.3.
Specialties requiring water and waste connections shall be submitted for approval
of the Inspectors.
MAPTT , 17
HANC�'�,.S AND SUPPCP.TS
17.1 STRAIN MID ST. ^.rSSE'S
17.1.1, General: Piping in a plumbing, system shall be installed without undue
strains and stresses, and provision shall be made for expansion, contraction, and
structural settlement.
17.2. VE: TICK PIPING
17.2.1. Attachment: Vertical piping shall be secured at sufficiently close
intervals to keep the pipe in alignment and carry the weight of the pipe and con-
tents.
17.2.2. Cast -Iron Soil Pipe: Cast -iron soil pipe shall be supported at not less
than at every story height and at its base.
17.2.3. Screwed Pipe: Screwed pipe (IPS) shall be supported at not less than
every other story height.
17.2.4. Copper Tubin -: Copper tubing shall be supported at each story for
pipin7 12 inches and over and at not more than 4 -foot intervals for 13 inches and
smaller.
29.
17.3 F•ICRIZaTTAL PIPING
17.3.1, Supports: Horizontal pipin? shall be supported at sufficiently close
intervals to peep it in alignment and prevent sag!;ing.
17.362. Cast -iron Soil Pipe: Cast -iron soil pipe shall be supported at not
more than 50foot intervals.
17.3.3. Screwed Pipet Screwed pipe (I?S) snail be supported at approximately
10 -foot intervals.
17.3.4. Copper Tubin -S Copper tub _n- shall be supported at approximately
6 -foot intervals or p p_`n? 11 inches and smaller and 10 -foot intervals for pipin-
2 inches and lar -er.
17.3.5. Lead Pine: Lead pipe shall be supported by strips or otherwise for
its entire length.
17.3.6. In Ground: Pipin- in the 7round shall be laid on a firm bed for its
entire length, except where support is otherwise provided which is adequate in
the judgement of the Plumbing Inspector.
CF: ,717E 1S
IIIDII',ECT '!AS=- PI .'II•IG !1.I'1D SPECIAL iJAST S
18.1. SPECIAL .JASTLS
18.1.1. Pood _Iandling: Establishments engaged in the storage, preparation,
selling, servin ^, processing, or otherwise handlin- of good shall have the waste
piping from all refrigerators, ice boxes, coolinn or refrigerating coils, steam
tables, e3m boilers, coffee urns or similar equipment discharrye indirectly into a
sin',: or receptor and the waste outlet shall terminate at least 2 inc "yes above the
flood rim of such sin',: or receptor.
18.1.2. Connection: indirect waste connections shall be provided for drains,
overflows, or relies vents from the water supply system or air conditioning units.
18.1.3. Sterile Material's: Appliances, dev._ces, or apparatus such as steri-
lizers, stills and similar equipment requiring water and waste connections and used
for sterile material shall be indirectly connected or provided with an air lap
between the trap and the appliance.
18.1.4. Drips: Appliances, devices, or apparatus not regularly classed as
plumbing fixtures but which have drips or draina -e outlets, shall be drained by
indirect waste pipes dischar,7ing into an open receptacle.
15.1.5. Commercial Diswashing I.lachines: Dishwashing mach_nes, except those in
private living quarters or dwelling units, shall be indirectly connected.
15.2. LERIGTF
18.2.1. Waste Pipe: Any indirect waste pipe exceeding 2 feet in length shall
be trapped.
18.2.2. Length to Vent Limitations: T.1he maximum length of the indirect waste
to vent s2laii not exceed 15 feet.
30.
1E.2.3. Access for Clean4.n -t Indirect waste p_pin'; shall be so instilled as
to permit ready access nor .:lushin- and cleanin7.
CT_:L11YTM!z 19
:AMR SUPPLY Ai?D DE'"M'I BUT IW
19.1. nrtak'iC'_'IGi3 OF ?C1:'ABL. ,!Am SUPPLY
19.1.1. Cross Connections: Potable water - supply pipin-, water discharge out-
lets, bactflow- prevention devices or similar equipment shall not be located so as
to male possible theri submerence in any contaminated or polluted liquid or
substance.
19.1.2. Approval or Devices: Before any device for the prevention of backflow
or back siphona,- is installed, it shall have first been certified as meeting the
requirements and tests as required -For baci.flow preventers Galt A40.6 -1943. Devices
installed in t potable water supply for protection against backflow shall be main-
tained in ?ood working condition by the person or persons having control of such
devices. The Inspector may inspect such devices and, if ound to be defective or
inoperative, shall require the replacement of repair thereof.
19.2 P XVSP>i'I01-! OF BAC FLC1['! BY AI' GAS'
19.2.1. Provision for Air Gap: "-!ie water distribution system shall be pro-
tected aryainst back flow. nvery water outlet s::all be protected from backflow,
where possible, by Navin the W sclmr-re and elevated to provide a "minimum required
air ryap" as defined :.n ASA A40.4 -1942. .l! ere a.t is not possi Isle to provide a
minimum air gap, t'_e water outlet small be equipped wit!. an accessibly located
backflow preventer complying with requ'.rev ents as stated in Pasa rapt 19.1.2.
above, installed on the dicharne side of the manual control valve.
19.3 VACUUM L ^, AMRS AND A111, GIPS
19.3.1. Plush Valves: Plush valves shall be equipped with an approved vacuum
'wreaker. The vacuum Brea% er shall be installed on the discharge side of the flush-
ing valve with the critical level at least 4 inches above the overflow rim of the
bowl.
19.3.2. slushing Tank. Flushing tanks shall be equipped with an approved ball -
cock. The ball -cock shall be installed with the critical level of the vacuum
breaker at least 1 inch above the full opening of the overflow pipe. In cases
where the ball -cot% has no hush tube, the bottom of the water supply inlet shall
be installed 1 inch above the full openin'm of the overflow pipe/
19.3.3. Lavin Spri nl;lers : Latin sprinklers systems shall be equipped with an
approved vacuum breaker on the discharge side of each of the last valves. The
vacuum breaker shall be at least 6 inches above the highest head and at no time
less than 6 inches above the surroundin^, ground. "here combination control valves
and backflow preventers are installed, the bottom of the valve shall constitute
the bottom of the bac' :cflow preventer.
19.3.4. Pixture :*!-4th Hose Attachments: Pixtures with 'lose attachments shall be
protected by an approved vacuum breaker installed 6 incises above the hi -hest
point of usa7e and on the discaarl7e side of the valve.
31.
19.4 WATER DISTRIBUTICJ[1 PIPING FITTINGS
19.4.1. Materials: liaterials for water pipes and tubinry shall be brass, copper,
cast iron, wrought =on, open- hearth iron, or steel, with appropriate approved
fittings. All threaded ferrous pipe and fittings shall be galvanized (zinc coated)
inside and outside. Under - .round connections between ferrous and non - ferrous pipe
shall be made throu -h an approved dielectric unsulatinry type of coupling, union
or connector.
19.4.2. Selection of Materials: ,''hen selecting the material and size for water
supply pipe, tubing, or fittin7s, due consideration shall be ryiven to the action of
the water on the interior and to the soil, fill or other material on the exterior
of the pipe. No material that would produce toxic conditions in a potable water
supply system stall be used for piping, tubinry or fittings.
19.4.3. Inaccessible Pipes: Inaccessible water pipin- in or under floor slabs
shall be minimum weight Type L, or better, copper tubing. Copper piping shall be
continuous through the floor having no fittings or joints below the surface of the
floor.
19.4.4. Used Piping: No piping material that has been used for other than a
potable water supply system shall be re -used in the potable water supply system.
19.4.5. tIater Supply Control: R main shut -off valve on the water service pipe
shall be provided near the property line.
19.4.6. Tank Controls: Supply lines taken from pressure or gravity tanks
shall be valved at or near their source.
19.4.7. "later Heating Equipment: A shut -off valve shall be provided in the
cold water branch line to each mater tank or each water heater.
19.4.8. `later Service Pine: The water service pipe from the street main to
the water distribution system or the build4.n; shall be of suff4_cient size to
furnish an adequate flow of water to meet the requirements of the buildinry at peak
demand, and in no case shall be less than 3/4 inch nominal diameter from main to
point of first building outlet or branch take -off.
19.4.9. Sizing: The sizin7 of the water distribution system shall conform to
good engineering practice in accordance with the followinry Table. The minimum
size of a fixture supply pipe shall be as provided in the following Table.
TYPE OF FI.XTURE
C R DLL VICB
PI=- SIZE TYPE OF FI KTUitE
(Inches) OR DEVICE
Bath Tubs . . . . . . . . . . . . 1/2
Combination Sink and Tray . . . . 1/2
Drinking Fountain . 3/8
Dishwasher (domestic) . 1/2
Kitchen Sink (residential) . . . . 1/2
Kitchen Sink (commercial) . . . . 3/4
Lavatory . . . . . . . . . 3/8
Laundry Tray, 1,2, or 3 compartmentl /2
Shower (sin--le head) 1/2
Sinks (sere., slop) 1/2
PIPE SIZE
(Inches)
Sinks Flushin- Rim
3/4
Urinal (flush tank)
1/2
Urinal (direct flush valve)
3/4
''later Closet (tank type)
3/8
later Closet (flush valve type)
1
Hose Bibbs
1/2
"'all Hydrant
1/2
For fixtures not listed, the minimum supply branch may be made the same as for
a comparable fixture.
32.
r
19.4.10, Separation from Drain and Sewer! Except as permitted in Paragraph
19.4.11, the under-round water - service pipe and the building drain or building
sewer shall be not less than 5 feet apart horizontally and shall be separated by
undisturbed or compacted earth.
19.4.11. '.'hen Se aration Not Required: ''There the water- service pipe is 2
inches in diameter and less, the water - service pipe may be placed in the same
trench with the building drain and buildin; sewer provided the bottom of the
water- service pipe, at all points, shall be at least 12 inches above the top of
the sewer at its hi -hest point. The water- service pipe shall be placed on a solid
shelf excavated at one side of the common trench. The number of joints of sewer
and water- service pipe shall be installed in such manner and shall possess the nec-
essary strenl-th and durability to prevent the escape of solids, liquids, and gases,
therefrom, under all known adverse conditions such as corrosion, strains due to
temperature changes, settlement, vibrations, and superimposed loads.
19.4.12. later Supply Control: An approved *but -off valve shall be installed
in the water - service pipe on the property side of the meter and protected by an
approved enclosure with a removable cover,
19.4.13. Provisions for Draining System: All water pipin7 in pier and beam
construction will be install as ollows: ?ipe to -1rade to low point; and in any
event below outside beam, with outside hydrant supply to extend through beam above
outside ground level.
19.4.14. Private "later Supply: No private water supply shall be interconnected
with any public water supply.
19.5 WATER IMATE^,S
19.5.1. Temperature - Pressure and relief Valve: All water heaters Ball be
protected with a combination temperature- pressure relief valve installed in the hot
water outlet side of the tank. The temperature sensing; element shall be immerced
in the water within the upper 6 inches of the stora -e tank.
19.5.2. Relief Valve Discharge: The discharge pipe from the temperature -
pressure relic valve :hail ge run to the outside of the building or to a waste
outlet approved by the Plumbing Inspector.
19,5.3. Approvals: Temperature - pressure relief valves which have been tested
and approved by, or meet the specification requirements of the American Gas Asso-
ciation, the Underwriter's Laboratories, Inc., or other recognized approval authori-
ties, shall be considered acceptable.
19.5.4. Pressure Marking of Storage Tank: Any storage tank hereafter installed
for domestic hot water shall have clearly and indelibly stamped in the metal, or
so marked upon a plate welded thereto, or otherwise permanently attached, the
maximum allowable working pressure. Such markings shall be in an accessible posi-
tion outside of the tamk so as to make inspection or re- inspection readily possible.
All storage tanks for domestic hot water shall meet the applicable ASM standards.
20.1G31MRAL
CHAPTE:; 20
DRAISJACE SYSTEM,
33.
20.1.1. Materials: Pipe, tubing and fittings for drainage systems shall
comply with the provisions of Chapter 12 of this code. Above ground piping within
buildings and piping in raceways or tunnels shall be of cast iron, galvanized open -
hearth iron, lead, brass, or Copper pipe, or copper tubing. Extra heavy weight cast -
iron pipe shall be used in buildings more than two - stories in height,
20.1.2. Under,-round Pipin,'YWithin Buildings: All such piping shall be of cast•
iron soil pipe or type L copper tube.
20.1.3. Fittings: rittin;s on the drainage system shall conform to the type of
pipin-. used. Fitti s on screwed pipe shall be of the recessed draina -e type.
20.1.4. Ali?nment and Grade: Horizontal drainage pipe shall be run in practical
alignment at a uni orm -era e.
20.2 BUILDING SMIER
20.2.1. Separate Trenchest The buildinz sewer, when installed in a separate
trench from the water - service pipe, shall be cast -iron sewer pipe, vitrified -clay
sewer pipe, concrete sewer pipe, bituminized -fiber sewer pipe, asbestos- cement
sewer pipe, plastic sewer pipe or type L or :' copper tube. Joints shall be water -
tight and rootprooY.
20.2.2. One Trench: The building sewer, when installed in the same trench with
the water - service pipe shall be constructed of durable materials which are corro-
sion- resistent and shall be so installed as to remain watertight and be rootproef.
The building sewer shall be tested with a 10 -foot head of water or equivalent
and found to be tight,
20.2.3. Bituminized -Fiber ?ipe: When bituminized -fiber pipe is used, it shall
be installed in strict accordance with the manufacturer's specifications.
20.2.4. Plastic Pipe: Plastic pipe meeting commercial standard 228 -60 shall be
allowed for house -sewer installations. It shall be installed in strict accordance
with the manufacturer's specifications.
20.2.5. Filled or Unstable Ground: A buildinn sewer or buildin-, drain installed
in filled or unstable ground shall be of cast -iron pipe, except that non- metalic
drains may be laid upon an approved concrete pad if in separate trench.
20.3 DRAINAM PIPING INSTALLATION
20.3.1. Uniform Grade: Horizontal drainage piping small be installed at a
uniform slope or ¢rade as follows:
a. Small Pipin �: Horizontal drains -e pipin; of 3 -inch diameter
and less shall be installed with a fall of not less than
1/4 -inch per foot.
b. Large Piping: Horizontal drainage piping larger than 3 -inch
diameter shall be installed with a fall of not less than
1/8 -inch per foot.
c. Minimum Velocity:`1here conditions do not permit buildin,-
drains and sewers to be laid with a fall as great as that
specified, then a lesser slope may be permitted provided
the computed velocity will not be less than 2 feet per second.
34.
20.4 FEMME UNIT VKUMS
20.4.1. Use of Fixture Unit Value: Fixture unit values as liven in Para7raph
20.4.2. designate the relative load TaFtor of different kinds of fixtures which
shall be employed in estimatin- the total load carried by a soil or wate pipe, and
shall be used in connection with the tables of sizes for soil, riatte, and drain pipe
for which the permissible load is given in terms of fixture units.
20.4,2. TABLE OF FIXTLAO UNIT VALUES
Fixture -unit Value Minimum Size of
Fixture T pe as load factor trap (inches)
1 Bathroom group consisting of water
(Tani; water
14
closet, lavatory* and bathtub or
(closet
6
11
shower stall
(Flush -valve
1
Dishwasher, 2 domestic
(water closet
8
it
Bathtub 1 (with or without overhead shower
1
2
11
Bathtub 1
2
3
2
Bidet
3
3
Nominal it
Combination sink- and -tray
1
3
it
Combination sink- and -tray with food
2
Large P O
Separate
disposal unit
2
4
traps it
Dental unit or cuspidor
a
14
Dental Lavatory
1
11
Drinking fountain
1
Dishwasher, 2 domestic
2
it
Floor drains 3
1
2
.itchen sink, domestic
2
1
.Utchen sink, domestic, with food - disposal unit
3
1
Lavatory 4
1
Small P O
114
Lavatory
2
Large P O
1
Lavatory, barber, beauty parlor
2
1
Lavatory, surgeonts
2
1
Laundry tray (1 or 2 compartment)
2
i3
Shower Stall, domestic
2
2
Showers (group) per head
3
Sings:
Surgeon's
3
l
Flushing rim (with valve)
8
3
Service (trap standard)
3
3
Service (P trap)
2
2
Pot, scullery, etc. 2
4
it
Urinal, pedestal, syphon jet, blowout
8
Nominal
3
Urinal, wall lip
4
11
Urinal stall, washout
4
2
Urinal trough 2 (each 2 -foot section)
2
11
Vlash sink (circular or multiple, each set of faucets
2
Hominal
11
'later closet:
Tani: - operated
4
Nomical
3
Valve-operated
8
3
1. A shower head over a bathtub does not increase the fixture value.
2. See Para. 20.4.3. for method of computinry unit value of fixtures not listed in
Table 20.4.2 or for rating of devices with intermittent flows.
35.
3. Size of floor drain shall be deternined by the area of surface water to be
drained.
4. Lavatories with 14 or 14 inch traps have the same load value; large P.O. plus
have greater flow rate.
20.4.3. Fixture Iiot Listed in 'aradra h 2 -,4.2: Fixtures not listed in Para-
graph 20.4.2 shall b estimated as follows:
Fixture Fixture Fixture Fixture
Drain or Trap Size Unit Value Drain or Trie Size Unit Value
11, inch and smaller 1 21 inches . , . 4
11 inches . , , , 2 3 inches . . 5
2 inches 3 4 inches . 6
20.5 DETERMINATION OF SIZES FOP. 71IE DP.AINAOE SYSTEH:
20.5.1, Maximum Fixture -Unit Load: The maximum number of fixture -units that may
be connected to a ?iven size of buildinry sewer, buildin.; drain, horizontal branch,
or vertical soil or waste stack is Given in Para -rapt: 20.5.2 and 20.5,56
20.5.2. Table of Building Drains and Sewerst Maximun number of fixture units
that may be connected to any portion 1 of thl building drain or the building
sewer.
Diameter of Pipe (Inches) Fall Per Foot
1/16 inch 1/8 inch 1/4 inch 1/2 inch
2
. . . . . . . . . . . . . .
. . 0 . .
. . 21
20
2L
. . . . . . . . . . . . . .
. 0 . .
. . 24
31
3
*(2) 20
*(2) 27
*(2) 36
4
180
216
250
5
390
480
575
6
,
700
840
1,000
8
. . . 1,400
1.600
1,920
2,300
10
. . . 2,500
2,900
3,500
4,200
12
. . , .. 3,900
4F800
5 600
6.700
*(1) Includes branches of the buildin7 drain
*(2) Ilot over 1 water closet
20.5.3. 1.1inimum Size of Soll and Waste Stacks: No soil or waste stack shall
be smaller than the lar -est horizontal branch connected thereto except that a
4 3 7I.C. connection shall not be considered as a reduction in pipe size.
20.5.4. tSinimum Size of Stack Vent or Vent Stack: Any structure in which a
building drain is installed shall have at least one vent stack carried full size
of the building drain, whichever is the lesser.
36.
20.5.5. Table of Iorizontal P!-xture Branches:
Naximum Number of Fixture Units That May
Be Connected to
Up to 3- stories in hei7ht Over 3 stories in hei ht
Diameter of Any horizontal *(1) fix - Total at 1 -story or
Pipe (Inches) ture branch branch interval
1
.
. .
.
. .
. .
. .
1
.
. .
.
. .
. .
. 1
1
.
. .
.
. .
. .
. .
3
. .
. .
. 2
2
*(3) 5
...
. .
.
*(3) 4
22
...
*(3) 9
...
*(3) 7
3
*(2) 16
. *(2) 12
4
120
• .
. 90
5
300
200
6
580
:
. .
. :
i 350
8
.
1,200
• 600
10
.
. .
.
. .
. .
.
2,500
1,000
12
.
. .
.
. .
. .
.
3,900
: , .
. .
. .
: . 1,500
*(1) Does not include branches of the buildin7 drain line
*(2) Ilot over one water closet
*(3) `later Closets not permitted
20.5.6, Stack Loadimy and Vent neduirements Tablet
20.5.6 a Stac;: and Vent Diameter Plug Len -th of Venti
1 to 3- stories in '_zei^ht
Stack Loading
Size of Soil
or :taste Line
(Inches)
2
3
4
5
6
8
10
Fixture Units
Connected
*(3) 10
*(2) 30
240
540
960
2,200
3.800
Diameter of Vent
30 75 200
60 200 500
30 190 250 900
30 70 300
24 100
30
ired (Inches)
ee
900
250 1,000
80 350 1,100
30 80 350
zu.s.00 Stacc_ ana ,vent Diameter Pius Len!�tn or vent over 3- stories,
Stack Loadinry Vent Requirements
Size of Soil Diameter of Vent '_required Inches
or '.Taste Line fixture Units 14 1 2 2 t 3 4 5 6 8 To
(Inches) Connected 1 Maxinum Total Length of ent feet
2 3 24 20 30 150
3 *(2) 60 50 80 400
4 500 20 70 10 700
5 1,100 20 50 200 700
6 1,900 20 70 200 700
8 3,600 25 60 250 NO
10 5,600 25 60 250 500
12 8,400 25 60 250
37
General: Vent lines are to be no less than one size smaller than the fixture
trap being served, and in no case less than one And on quarter (1 0
inches. All water closet regents are to be no less than 2 inches in
size.
*(1) Twenty per cent of the above total vent leno,th may be installed in a
horizontal position.
*(2) Not over 2 water closets may be+ installed on a 3 -inch stack.
*(3) No water closets permitted.
CHAPi"7. R 21
21.1 M^N.MAL ^.% 1U=I T"MrS
21.1.1. Vent Pipe F'aterial: rent piping shall be of cast -iron, - alvani.zed
wrought iron, -alvanized steel, lead, brass, copper pipe, copper tube, or one
piece cement asbestos. See 'ara -raph 12.1.4 for table.
21.1.2. Underground: Vent pipin- placed under -round shall be cast -iron pipe
of type L copper tube.
21.1.3. Pain Stacy: Every building in which plumbing is installed shall ?save
at least one main stacic, which shall run undimi ni s'�ed in size and as directly as
possible, from the building drain throu8'_z to the open air above the roof.
21.1.4. Vent Terminals: Extensions of vent pipes throuZh a roof shall be ter-
minated at least 10 inchess above it except that where a roof is to be used for any
purpose other than weather protection, the vent extensions shall be run at least
6 feet above the roof, and shall be anchored to the construction in a manner approved
as safe by the Inspector.
21.1.5. Location of Vent Terminal: i!o vent terminal from a drainage system
shall be directly beneath any door, window, or other ventilatinry opening of the
buildinZ or of an adjacent building nor shall any such vent terminal be within
10 feet horizontally of such an opening unless it is at least 2 feet above the top
of such openin --.
21.1.6. Plashins-s: Joints at the roof around vent pipes shall be made water-
tight by the use shines. Such (lashings shall be made of lead or copper.
21.1.7. Fla_; Polinn: Vent terminals shall not be used for the purpose of flag
poling, TV 1,er!als, or similar purposes.
21.1.8. Vent Grades and Connections: All vent and branch vent pipes shall be
so graded and connected as to drip back to t'se soil or waste pipe 11 - ravity.
21.1.9. Vertical ^ise: `''here vent pipes connect to a horizontal soil or
waste pipe, the vent shall be talcen off above the center line of the soil pipe,
and the vent pipe shall rise vertically, or at an an?le not more than 45 degrees
from the vertical, to a point at least 6 inches above the flood -level rim of t'se
fixture it is ventinry before offsetting horizontally or before connecting to the
branch vent. Exceptions to this provision are floor drains and "P" traps installed
under floors.
21.1.10. Heibht Abbve Fixtures: A connection between a vent pipe and a vent
stack or stack vent shall a made at least 6 inches above the flood -level rim of
the highest fixture served by the vent. Horizontal vent pipes forming branch vents,
relief vents, or loop vents shall be at least 6 inches above the flood -level rim
38
of the highest fixture served. Island sinks where traps are to be inaccessible may
be installed with 2 -inch, deep -seal P -traps below floor and vented with 2 -inch soil
pipe to wall with cleanout.
21.1.11. Bar and Soda - Fountain Sink Traps: Traps serving sinks which are part
of the equipment of bars, soda Yountains, and counters need not be vented when the
location and construction of such bars, soda fountains, and counters are such as to
maI:e it impossible to do so. Uhen such conditions exists, such sinks shall dis-
charge into a floor sink or hopper which is properly trapped and vented.
21.1.12. Fixtures Back- toBack: Two fixtures set back - toback, within the
distance allowed between a trap and its vent, may be served with one continuous
vent pipe, provided that each fixture wastes separately into an approved double
fitting having inlet openin -s at the same level, (See Paragraph 21.6.3.) ''While
Paragraph 21.6.3. states "fixtures set back - toback," fixtures set side - byside
also come under its provisions.
21.1.13. Trap Seal Protection: The plumbing system shall be provided with a
system of vent pipini whicl—i—M-11 permit the adm4.ssion or emission of air so that
under normal and intended use the seal of any fixture trap shall not be subjected
to a pressure differential of more than 1 inch of water.
21.1.14. Trap Dip: The vent pipe opening from a soil or waste pipe, except
for water closets and similar fixtures, shalt not be below the weir of the trap.
21.1.15. Crown Vent Prohibited: No crown vent shall be used nor shall any
vent connection be made within 2 pipe diameters of the trap weir.
21.1.16. Determining Len th of Vent Stacks: The lenfith of the vent stack or
main vent shall be its developed length from the lowest connection of the vent
system with the soil stack, waste stack, or building drain to the vent stack ter-
minal, if it terminates separately in the open air, or to the connection of the
vent stack with the stack vent, plus the developed length of the stack vent from
the connection to the terminal in the open air, if the two vents are connected
together with a sin -le extension to the open air.
21.2. FIXTURE TRAP VENTS
21.2.1. Distance of Trap From Vent: Each fixture trap shall have a protecting
vent so located that the slope and the developed lenryth of the fixture drain from
the trap weir to the vent fitin7 are within the limitations set forth in Para-
graph 21.2.2.
21.2.2. Distance of Fixture Trap From Vent Table:
Size of Fixture Distance Trap to Vent
Drain (Inches) Feet Inches Max. Slope per Ft.
la 2 6 1,1
1 3 6 14,.
2 5 0 14"
3 . ... . 6 0 l4'•
4 e 10 0 lµ•
39.
I--
21.2.3 Hydraulic Gradient and Developed Length: Figure A, below, il-
lustrates both the hydraulic gradient principle and the( method of measuring
distance from trap to vent. A fixture drain which slopes more than one pipe
diameter between the vent opening and the trap weir has a greater tendency
to self- siphon the trap seal than a fixture drain installed at a slope of not
more than one pipe diameter.
Figure B, below, illustrates how to measure the developed length of a
drain from the weir of a fixture trap to a vent opening, including an offset.
This developed length should not exceed the developed lengths shown in Para-
graph 21.2.2.
j'si
Fig. B
Vent Pipe Opening
Hydraulic Gradient
One Pipe Diameter
40
Trap Weir
Fig. A
21.3 COMMON VENT DEFINED
21.3.1 This is a vent connecting at the junction of two fixture drains
and serving as a vent for both fixtures. An individual vent, installed ver-
tically, may be converted to a common vent for two fixture traps when both
fixture drains connect with a vertical drain at the same level.
21.3.2 Typical Examples of Common Vent Installations:
1
1
1
1
Fixture t Fixture
1
1
1
Dotted lines '
1
represent
common vents G.a
I
1
Fixture
Fixture 1
I
I
I
Fixtures Fixtures
�V
21.4 WET VENTING AND STACK VENTING
21.4.1 Simile Bathroom Groups: Groups: A single bathroom group of fixtures
may be installed with the drain from a back - vented lavatory, kitchen sink,
or combination fixture serving as a wet vent for a bathtub or shower stall
and for the water closet, provided:
A. Not more than 4 fixture units drain into a 2 -inch diameter
wet vent.
B. The horizontal branch connects to the stack at the same
level as the water closet drain, or below the water closet
drain when installed on the top floor. It may also con-
nect to the water closet bend. See diagram on Page 54 for
examples of typical wet vent installations.
41
3" W.C.
21.4.2 Examples Showing Approved Wet Vent Installations;
I
3" Stack Vent
r t 2" Branch Vent
I Lay.
1"
Tub or Shower
3'.' Soil Stack
IA,-3" Stack Vent
Lav IV"
I
2" We
12" Tub Vent(
or
Shower\4
3" W,C.
3" Soil Stack
I
I
I
(,r3" Stack Vent
I2" Branch Vent
ii -r'-1
I '
3�. -►I Lay. lVI,���
Y Sink
I �1�
2211
3" I / �2" Tub
W.C.--.01.1
2" or Shower
3" Soil Stack
fA /3" Stack Vent
' 2" Branch Vent
Sink witn ois-
311 Lay.lk" I posal 1�"
2"
3" W. C.
2 ".2" Tub or
�4 ..
Shower
2"
Soil Stack
42
Lay.
i
w. c. 3'1
3"
Soil Stack
21.4.3 Examples Showing Approved Stack Vent Installations:
3"
IStack Vent
I
I
Lay. 1�"
Tub or
Shower 2"
of 3"
Stack Vent
I
I
Sink 1�"
.211 Tub or Shower
3': -- 3" San. Tee with 2"
Soil Stack �_ side inlet
3" San. Tee with
2" side inlet
I
1--3" Stack Vent
�t 21,
Lay. 1�"
211
3" W.C.
43
Sink with Disposal
A--' 1 �"
Tub'or Shower 2"
3" Soil Stack
21.4.4 Wet Venting and Stack Venting Limitation: A drawing of any wet
vented or stack vented installation which differs from the examples shown
in Paragraph 21.4.2 and Paragraph 21.4.3 shall be submitted to the Inspector
for review and approval prior to installation.
21.4.5 Multi -Story Bathroom Groups: On the lower floors of a multi-
story building, the waste pipe from 1 or 2 lavatories may be used as a wet
vent for 1 or 2 bathtubs or showers provided that:
A. The wet vent and its extension to the vent stack is
2 inches in diameter. See Paragraph 21.4.6
B. Each water closet below the top floor is individually
back vented.
C. The vent stack is sized as given in Paragraph 21.4.7
below.
21.4.6 Multi -Story Wet Venting:
Typical Bathroom
PLAN
44
Roof
ELEVATION
Through Roof or Con -
nect to Stack
Top Floor
Typical Floor
Same as Above
Soil Stack
Lowest Floor
Full Size of Vent Stack
Bottom of Vent Washed b
lowest fixture
21.4.7. Size of Vent Stacks:
Diameter of Vent
Number of Wet - Vented Fixtures Stacks (Inches)
1
or
2 bathtubs
or showers
, , . , i . i 2
3
to
5 bathtubs
or showers
, . , 21
6
to
9 bathtubs
or showers
. 3
14
to
16 bathtubs
or showers
4
21.4.5. Exception: In multi -story bathroom !coups, wet- vented in accordance
with Paragraph 21.4.5, the water closets below the top floor need not be indivi-
dually vented if the 2 -inch waste connects directly into the water closet bend at
a 45- degree angle to the horizontal portion of the bend in the direction flow.
See Paragraph 21.4.6.
21.5 INDIVIDUAL FIXTU't2 111EV3NTING
21.5.1, Horizontal Branches: One sink and 1 lavatory, or 3 lavatories within
8 feet developed length of a main- vented line, may be installed on a 2 -inch hori-
zontal waste branch without reventin;;, provided the branch is not less than 2
inches in diameter throughout its length; and provided that the wastes are connec-
ted into the side of the branch, and the branch leads to its stack connection with
a slope of not more than 1/4 -inch per foot.
21.5.2. Limits of Pixture -Units Above Bathtubs and :later Closets :A fixture
or combination o_ fixtures whose total discharrye rating is not more than 3- fixture
units may discharge into a stack not less than 3 inches in diameter without re-
venting, provided such fixture connections are made above the connections to the
highest water closet, or bathtub, the fixture -unit rating. of the stack is not
otherwise exceeded, and their waste piping is installed as otherwise required in
Paragraph 21.2.2.
21.6 CIRCUIT AIM LOOP VLIJTING,
21.6.1. Battery Ventin -J: A branch soil or waste pine to which two but not
more than six �"loor mounted water closets are connected in battery into the side of
a horizontal branch may be vented by a circuit or loop vent which shall take off
in front of the last fixture connection. In addition, lower floor branches servin-
more than 3 water closets shall be provided with a relief vent taken off in fromt
of the first fixture connection. 'dhen lavatories or other similar fixtures dischar-
Se above such branches, each vertical branch shall be provided with a continuous
vent. All blowout type fixtures shall be individually vented.
21.6.2. Vent Connections: :!hen the circuit, loop, or relief vent connections
are taken of the horizontal branch, the vent branch connection shall be taken
off at a vertical angle or from the top of the horizontal branch.
21.6.3. Fixtures Back -to -Bach in Battery: When fixtures are connected to one
horizontal branch through a double Y or a sanitary cross in a vertical position,
a common vent for each two fixtures back -to -back or double connection shall be
installed in a vertical position as a continuation of the double connection. See
Paragraph 21.31.1.
45.
,I--.
21.6.4. Pipe Sizes for Circuit or Loop Vent Systems:
Diameter of Circuit or Loop
Vent (Inches)
22 3 4 5
Horizontal Soil
or 'Taste Pipe Fixture Units Iaximum Iorizontal tength
Diameter (Inches) O"aximum PTO.) (Feet)
4
100
20 52
200
4
200
18 50
180
5
300
12
50 180
6
580
10
40 140
21.6.5. Size and Length of Vents:
Size o Soil Diameter of Vent Required (Inches)
IL
or "ante Stack Fixture Units 14 a 2 2A, 3 4 5
(Inches) Connected Ilaximum =Fth o Vent Feet
2
12
30 75
200
. . .
2
20
26 50
150
+
i
22
42
-- 30
100
300
3
10
-- 30
100
200
600
.
3
30
-- --
60
200
500
. .
. . .
. . .
3
60
-- --
50
FO
400
. .
. . :
. .
•
4
100
-- --
35
100
260
1000
. .
. . .
.
4
200
-- --
30
90
250
900
. .
. . .
.
4
500
-- --
20
70
180
700
. .
. . .
.
5
200
-- »-
--
35
80
350
1000
5
500
-- --
--
30
70
300
900
5
1,100
-- --
--
20
50
200
700
6
350
-• --
--
25
50
200
400
1300
.
6
620
-- --
--
15
30
125
300
1100
.
6
960
-- --
--
--
24
100
250
1000
.
6
1,900
-- --
--
--
20
70
200
700
.
3
600
-- --
--
--
--
50
150
500
1300
8
1,400
-- --
--
--
--
40
100
400
1200
2,200
-- --
--
--
--
30
80
350
1100
8
3,600
-- --
--
--
--
25
60
250
800
10
1,000
-- --
--
--
--
--
75
125
1000
10
2,500
-- --
--
--
--
--
50
100
500
10
3,300
-- --
--
--
--
--
30
80
350
10
5,600
»- -
--
--
--
--
25
60
250
CYMPI-r-r-Ti 22
GAS PLUI'L`II.1G
22.1 7,-,TING AND INSPEC!'ICI'
22.1.1. Testi n- Procedure:2he test on house pipin7 shall be made by closin-
all openin?s and subjectinry the pipes to an air pressure t',at will support a
column of mercury 15 inches in hei?'_lt. If th°s column of mercury is supported by
the air pressure for at least 15 minutes, durin7 periods of constant temperature,
the piping shall be considered tight.
46.
22.1.2. Prohibited flethods of Testinry: 'later will not be used in testing ;as
piping for leaks and piping into which water has been introduced will not be app-
roved, but will be condemned as faulty.
22.1.3. Fire Test Prohibited: A fire test is not permitted under any circum-
stances on inside wort.
22.1.4. Gas System Inspection: `Men the plumber has completed the system of
oipin;- gas and ?gas all branch and bracket extensions and heater openings firmly
and permanently fastened, he shall test the piping and if found ti7ht, shall matte
application for inspection and the Plunbin^ Inspector will call and nspect the
piping and witness the test, and if he finds the pipinry ti-ht, and the sizes and
work in accordance with the provisions of this code, he will tissue a certificate
of inspection and attach an inspection tag to the work.
22.2 GETMIAL ^.BGUTAMODIS
22.2.1. New Vaterials required: All pipe used for the installation, extension,
alteration, or repair or any gas piping, shall be new, standard weight wrought iron,
black steel, or galvanized steel, free fron splits, internal obstructions, or other
defects. Burred ends shall be reamed to the lull bore of the pipe.
22.2.2. Outside Gas Lights: Type " "" copper tubing may be used for under-
ground pipin,7 in outside -as light installations.
22.2.3. Underground Douse -Pipe Lines: Service lines installed underground
shall be type 'L or "IT copper, standard weight wrought iron, galvanized steel,
or black steel protected against soil corrosion with an approved type protective
coating.
22.2.4. :leaded Joints:'lelded joints may be used whenever practical in such
cases of industrial and commercial installations where pipinry of 2- inches and
larger is specified. All welding shall be performed by a "Certi:.`ied "Ielder" with
a current ratin- in force.
22.2.5. Approved Stop and Hose Cocks; All stop cocks and hose cocks used in
connection with ryas house piping shall be of a type designed and approved For use
with natural ryas. Fittinrys 3 inches and smaller shall be of - alvanized malleable
iron but cast -iron fittinrys may be used in sizes above 3 inches.
22.2.6 Bushings: Bushings shall not be used on concealed work. On exposed
work reducin- couplings are to be preferred to bushings. When bushings must be
used, they should reduce no less than two pipe sizes.
22.2.7. Concealed Pipinry: Unions, 31and or compression type joints, running
threads, and right and left couplings shall not be used on concealed ryas piping.
When necessary to inset fittings in existin-, piping which has been installed in a
concealed location, the piping may be re- connected by the use of a ground joint
union with the nut "center punched" to prevent loosening by vibration.
22.2.8. Insulated Connections: All connections between ferrous and non - ferrous
piping, except appliance connections, shall be made by the use of dielectric coup-
lings or unions.
22.2.9. Drains or Drip Legs: All house pipin shall be properly graded to a
drip or ample -s ze located in an accessible place. Where space will permit, house
pipe will be drained away from meter to a drip placed at far end of main sultply line.
47.
Otherwise drip will be placed at meter location and pipe graded to same.
22.2.10. Pipe Supports: All house piping shall be securely fastened to floor
joists or sills with either --alvanized pipe straps or pipe hooks, or with perfor-
ated pipe straps, and in such a manner as to prevent pipe from sag,-in- and becomin^
trapped. The followin- maximum spacing of supports shall be usedf
y inch pipe . . . . . . • . 6 feet
3/4 inch or 1 inch pipe 8 feet
1 1/4 inch or larger (horizontal) . .10 feet
1 1/4 inch or larger pipe (vertical) Each floor
22.2.11. Proximity to 3lectric :lire: IIo ryas pipe shall be run closer than
six inches to any electric wire unless such electric wire be inside a conduit.
22.2.12. Branch and 3xtension PipinTMt Gas must not be supplied from a smaller
pipe to a larger one. 11 branch outle pines shall be ta'_;en from top or sides of
main supply lines and never from below,
2262.13• Under-round 7ipe and Other Concealed Locations: No -as pipin- shall
be built into or embedded in any brick, stone, nasonry, or concrete and no avch
pipin, shall be installed in or on the around under any bu_'.idinn or structure
and all exposed ryas pipin► shall be kept at least 6 incs,es above -rade, except
as set forth in Para -raphs 22.2.14, 22.2.17A and 22.2.172.
22.2.14. Under-.round house l ipe: 'Ihen it is necessary t.-iat a house pine be
laid underryround, the underryround portion includin^ joints and risers shall be
protected a7ainst soil corrosion with an approved type protective coatin7 and
shall be drained to an accessible and suitable drip.
22.2.15. Accessibility of Concealed -,ipin;: Gas pipin; shall not be run in
floor, or throu;!h heatinry, coolin-*, or venti lating ducts, elevator shafts, furnaces,
refrigerating rooms, dryin; ovens or in any place where proper ventilation cannot
be continuously provided.
22.2.16 Ditch For Gas Pipe: Gas piping shall not be run in the same ditch
with mater, sewer, or any other utility line. A lateral clearance of not less than
2 feet shall be maintained. Gas pipin.- shall not be located in cinder fill
22.2.17. Gas Piping; in Ploors: '.There the Plumbin7 Inspector determines that
there is no way to avoid the installation of pipin- in sold floors, then one of
the following methods of installation, when approved by the plumbing Inspector
shall be followed:
A. 'rouse piping may be installed in a casing of iron pipe with
ti7htly sealed ends and joints. The casinry shall extend at
least 2 inches beyond the point where the pipe emer7es from
the floor. Where required, Vie casinry shall be vented to the
outside atmosphere and /or coated as specified in Para -raph
22.2.14.
3. House pipin; may be installed in a channel in the floor.
Such channel is to be suitably covered so as to permit
ready access to the pipin- and prevent the entrance of
corrosive materials, or it may be filled with some non-
corrosive material which can be removed with a minimum
of damarye to the floor.
4E.
C. Paragraphs 22.207A and 22.2.17E apply to as pipe in
solid floors, walls or ceilings. Gas pipe in stud walls,
ceilings or floors of joist construction need not have
any protective covering.
22.2.10. Joint Compound: 1hite lead or other suitable joint Compounds shall
be used sparingly and applied only to the male threads in nakin7 up joints on ;gas
house pipin7.
22.2.19. Three -lay Valves: TLree -way valves shall not be permitted.
22.2.20. Defective Pipes or Fittin ^s: Repair or spITt or faulty pipe or
fittin7s shall not be allowed.
22.3 NPn SUM Wa CAS QS"_`ma l
22.3.1. Table 1 -- Maximum Length of Pipe_in Feet
Number
of I inch 2 inch 3/4 inch 1 inch 14 inch 12 inch 2 inch 21 inch 3 inch
openings pipe pipe pipe pipe ipe pipe pipe pipe
1
27 50 70
100
150
200
300
400
2
50 70
100
150
200
300
400
3
24 70
100
150
200
300
400
4
50
100
150
200
300
400
5
35
100
150
200
300
400
6
60
150
200
300
400
8
45
120
200
300
400
10
65
200
300
400
13
42
175
300
400
15
120
300
400
18
90
270
400
20
70
210
400
23
55
165
400
25
45
135
330
30
80
200
35
60
150
40
50
125
50
80
65
50
75
35
22.3.2. Sizing Pipe Systems - For '.mown Demand: In cases where the demand in
cubic feet per hour of the various appliances are known, Table 2, below, shall be
used for determining the size of house piping required.
22.30. Table 2 - Minimum Size :7here the Demand and Haximum Length Are Known
( See Hext Page )
49.
1.1
Length Diameter of- Pipe in Inches
of Pipe 374- 1 1 1= 2 3 4
in Feet Demand in Cubic Feet per Hour
15
76
172
345
750
1200
2480
6500
13880
38700
79000
30
55
120
241
535
050
1780
4700
9700
27370
55850
45
44
99
199
435
700
1475
3900
7900
23350
45600
60
38
86
173
380
610
1290
3450
6800
19330
39500
75
77
155
345
545
1120
3000
6000
17310
35300
90
70
141
310
490
1000
2700
5500
15800
32250
105
65
131
285
450
920
2450
5100
14620
29850
120
120
270
420
860
2300
4800
13680
27920
150
109
242
380
780
2090
4350
12240
25000
180
100
225
350
720
1950
4000
11160
22800
210
92
205
320
660
1780
3700
10330
21100
240
190
300
620
1600
3490
9600
19740
270
178
285
5810
1580
3250
9000
18610
300
170
270
545
1490
3000
8500
17660
450
140
226
450
1230
2500
7000
14420
600
119
192
390
1030
2130
6000
12480
22.3.4. Sizing Pipe Systen for Unknown Devand: In cases where the ratin7 is not
known, the capacity -iven in the -ollowin- ta'?le may be used. Such demand shall be
determined in cubic feet per hour by dividin- t?ze manufacturer's B T U -.nput ratin-
of the appliance by 1,000.
22.3.5. Table # - Approximate I'aximum Gas Consumption-for—Some Common Appliances
Input BTU per Hr.
Appliance (AP L ox.)
nange, domestic, 4 top burners & 1 oven burner . . . . . . . . . . 62,500
."tan.e, domestic, 4 top burners, & 2 oven burners . . . . . . . . . . $2,500
::an7e, domestic, 6 top burners & 2 oven burners . . . . . . . . . . 107,500
Ilot Plate or laundry stove, domestic, per burner . . . . . . . . . . 9,000
room heater, domestic, radiant type, per
Single radiant . . . . . . . . . . . 2,000
P.00m heater, domestic, radiant type, per
double radiant . . . . . . . . . . . 4,000
"later heater, automatic instantaneous
(4 --al. per minute) . . . . . . . . . . . 150,000
Capacity (6 aa1, per minute) . . . . . . . . . . . 225,000
(8 ryal. per minute) . . . . . . . . . . . 300,000
'Water heater, domestic, circulation or side arm . . . . . . . . . . . 25,000
Refri 7,erator . . . . . . . . . . . . . . . . . . . . . . . . 2,500
Por automatic stora ^e water heaters and other appliances, the
input s',ould be determined from Vie manu_'acturer'S rati n -.
22.4 STOVES XTD 0''F `3'_: APPLIAACBS
22.4.1. Prohibited Location of 'later ':eaters: I'7o water heater whiciz depends on
the combustion or natural -as for neat shall be installed '.n ay room used or de-
sined to be used for sieepinZ purposes, bathroom, clothes closet, or in any closet
or other confined space openin7 into any batl_ or bedroom. (For exceptions see Para-
graph 22.0.1.)
50.
22.4.2. Location of Appliance Stops: Each and every ;gas stove, range, cooking
stove, water heater, and other gas consuming appliance shall be provided with a
lever handled stop cock located in the riser above the floor, and on the upstream
side of the union, at the appliance. Such stop cock shall be readily accessible
at all times.
22.4.3. Appliance Connections:
A. Gas connection to stoves, ranges, cook stoves, water heaters
and other appliances, shall be made by ri ?id metal connections,
except that American Gas Association approved flexible metal
may be used for connections for small portable heatin- appliances,
provided there is no cock on such portable heatin- appliance.
B. Pion- portable appliances such as central heatin -, water heatin,-,
and similar equipment shall be connected to the gas pipin- with
rifiid pipe or by approved semi_ - rigid tubin- not more than 2 feet
in length.
C, Hot plates, clothes dryers, room heaters, refri?erators,
domestic gas ranges, and similar equipment, shall be connected
to the pas piping with ri ^id pipe, approved semi -rigid tubinry
or approved appliance connectors, of flexible metal tubinn
and fittings. ?!hen a semi -riryid tubing connector or connector
of flexible metal tubing and fittings is used, it shall connect
to an outlet in the same room as the appliance. The length of the
connector shall not exceed 6 feet. The connector shall be installed
so as to be protected against shysical damaZe.
22.4.4. Prohibited Connections: The connection of an appliance with any type
of as hose is prohibited, except when used with laboratory, shop, or ironing
equipment that requires mobility during operation. Such connections shall have
the shut -off or stop cock installed at the connection to the building pipin .
'.'here as hose is used, it shall be of the minimum practical length, but not to
exceed 6 feet and shall not extend from one room to another nor pass throuryh any
walls, partitions, ceiling, or floors. Under no circumstances shall gas hose be
connected from view or used in a concealed location. Only listed gas hose shall
be used. Listed ' gas hose shall be used only in accordance with the terms of its
listing. Gas hos shall not be used where it is likely to be subject to excessive
temperatures (above 1250 r,)
22.4.5. Canopies and Vents in hotels, Resta,.!rants, Etc.:
A,Ranaes, hot plates, etc. used in hotels, restaurants, and ham-
burger stands where ryas is used for fuel, must be provided with
canopies properly vented into brick, tile or metal flues extend -
ing to open air at least 18 inches above the roof.
B. Vent pipes from canopies may connect with a chimney flue in
attic if flue is provided with an approved liner: or may
extend through the roof to open air at least 15 inches above
the roof and terminate witi an approved cap.
C. -!ood Partitions through which vent pipes pass must be pro-
tected by a thimble with a proper air space, except that no
vent pipe shall pass through any closet or pantry used for
the storage of clothing, household -oods or any combustible
material.
51.
22.4.6. Draft Diverters '_required: `later heaters and gas appliances having
pilot burners must be provided with down draft devices above the fixtures in the
vent, near the appliances.
22.4.7. Size of Vent and Flue Connections: rurnaces and water heaters must
be provided with vent and flue connections at"'least as large as the vent connec-
tions on the furnace or water heater and extend to open air at least 15 inches
above the roof and terminate with an approved cap..
22.5 US= APPLIAIC_.S AND ACCESSMIDS
22.5.1. Defining the 'lord "Listed ": the word "listed" used in connection
with appliances and accessories throughout the present text refers to appliances
and accessories which are shown in a list published by an approved nationally rec-
ognized testinl- a?ency *, qualified and equipped for experivental testin -, and
maintaining an adequate periodic inspection of current production of listed models
and whose listin^ states either that the appl'_ance or accessory complies with
nationally recognized safety requirements or has been tested and found safe for
use in a specified manner.
22.5.2. Type of Gas: It shall be determined that the appliance has been de-
signed for use with the gas to which it will be connected. No attempts shall be
made to convert the appliance from the as specified on the rating plate for use
with a different qas without consulting the local gas company or the manufacturer
for complete instructions.
* The American Gas Association, Inc. Laboratories and Underwriter's
Laboratories, Inc. are such nationally recognized testing agencies.
22.5.3. Permissible Temperatures on Combustible Materials: All gas appliances
and their flue or vent connectors shall be installed so that continued or inter-
mittent operations will not create a hazard to persons or property. They shall not,
durinu operation, raise the temperature of unprotected combustibel walls, partitions,
floors, or ceilinns more than 900 F above normal room temperature when measured
with mercury thermometers or conventional bead type thermocouples.
22.6 AIM, POP, COMUSTIOI?
22.6.1. Ventilation Requirements: Appliances shall be installed ina location
in which the Facilities or ventilation permit satisfactory combustion of -as and
proper ventin7 under normal conditions of use. 71hile all forms of building con-
struction cannot be covered 4n detail, this requirement may usually be met by
application of one of the following, methods in ordinary building construction.
A. In buildings of conventional frame, brick, or stone construction
without enclosed appliance rooms, basement strom windows, or ti,-ht stair
doors, infiltration is normally adequate to provide air for combustion
and draft hood dilution.
D. Where appliances are installed in a confined space within a building
having adequate air infiltration, provisions shall be made for supply -
ing this space with air for combustion and ventilation. This may be
accomplished through use of two permanent openings freely communicating
with interior areas of adequate infiltration or by compliance with pro-
visions of Item C. :There necessary, continuous ducts havin,- cross- section-
al areas equal to the openings shall be utilized to communicate with the
source of air supply. The minimum dimensions of rectangular air ducts
shall be not less than 3 incites.
52.
Where appliances are installed in a confined space within
a building of unusually tight construction, air for com-
bustion and ventilation must be obtained from outdoors -or
from spaces freely communicating with the outdoors. (Crawl
space, attic, or open air.) Under these conditions, there
shall be two openings having a combined free area of not
less than one square inch per 1000 BTU per hour of input
rating. One opening shall be near the top of the enclosure
and one near the bottom. These openings shall be of approx-
imately equal area and shall communicate with the selected
source, or sources of adequate air supply, by ducts. Ducts
shall be continuous and of the same cross- sectional
area as the openings to which they connect. The mini-
mum dimension of rectangular air ducts shall be not
less than 3 inches.
Ventilating air outlet rag- Flue should terminate above peak of roof and above
ister for furnace room nearby walls to assure satisfactory Flue perfor-
1 sq. in. free area for mance. In installations where the flue terminal is
each 1000 Btu per hour below nearby walls or roof peaks, an effective vent
furnace input, loted cowl should be used. f
above relief openincag of
draft hood. Register must
not be blocked by drapes
or other furnishings.��
Both registers must
II
Suggest room occess
Air circulated by furnace
door be not less than 6
'No part of Furnace
either face some
feet high by a width suRi-
I
ducts which ore sealed
cient to provide for in-
Combustion and ventilation
to furnace casing and
casing closer than 6
large well ventilated
are entirely separate
furnace. At least 2 feet
room 1 sq. in. free area For
from means provided for
horizontal clearance
each 1000 Btu per hour fur-
inches to wall.
interior space or ex-
note input, located at or be-
and ventilation air.
front of furnace when
low combustion air inlet to
closet door is open or
furnace. Register must not be
tend to such space
18 inches when door is
blocked by drapes or other
'Unless approved
closed.'
furnishings.
for a closer spacing.
'Spacing between
by means of ducts
draft hood and wall
Vertical distance d, to
at least 6 inches. If
It of registers should
s^
I
flue products may
be not less than 3V2
be directed toward
fee l
w..11
53
Suggest room occess
Air circulated by furnace
door be not less than 6
must be handled by
feet high by a width suRi-
ducts which ore sealed
cient to provide for in-
Combustion and ventilation
to furnace casing and
stallation or removal of
air inlet register for furnace
are entirely separate
furnace. At least 2 feet
room 1 sq. in. free area For
from means provided for
horizontal clearance
each 1000 Btu per hour fur-
supplying combustion
should be provided in
note input, located at or be-
and ventilation air.
front of furnace when
low combustion air inlet to
closet door is open or
furnace. Register must not be
18 inches when door is
blocked by drapes or other
'Unless approved
closed.'
furnishings.
for a closer spacing.
Fig. 2
53
22.7 PRESSURE ;
22.9.2. t.anual train Shut -off Valves: : ?here a complete shut -off type automatic
pilot system is not utilized, a manual main shut -off valve shall be provided
ahead of all controls except the manual pilot -as valve. ', ?here a complete shut-
off type automatic pilot system is utilized, a manual main shut -off valve shall be
provided ahead of all controls. A suitable manual valve shall be provided for shut-
ting off the main burner gas independently of the pilot gas. A union connection
shall be provided downstream from the manual main shut -off to permit removal of
the controls.
22.9.3. Clearances: Listed central heatinn boilers and furnaces shall be
installed with clearances not less than specified in Table 22.9.4. except that
appliances listed for installation at lesser clearances may be installed in accord-
ance with their listin;s. In no case shall the clearance be such as to interfere
with the requirements for combustion air and accessibility.
22.9.4. M nimum Clearances for Listed Central Heating Boilers and Furnaces:
Jacket Projecting Flue
Type of Sides Box or Draft
Appliance Above and Rear Front food
Boilers 6 6 18 6
Furnaces 18* 6 Z0 6
* A vertical clearance of 6 inches may be used w,-tl. warm air furnaces equipped
with mechanical means to circulate tl,e air and with an approved temperature
limit control that cannot be set hiryI :er than 2500 F.
22.10 F LCO; Flr,?T 4C -S
22.10.1 Installation:Listed floor furnaces may be installed In combustible
floors. Unlisted furnaces shall not be installed in combustible floors.
22.10.2. Manual train Shut -off Valve: f: separate manual main shut -off valve
shall be provided ahead of all controls and a union connection shall be provided
downstream from this valve to permit removal of the controls or the floor furnaces.
22.100. Combustion Air: Fixed ventilation by means of a duct or grille
arranged to supply air from a permanently ventilated attic, underfloor space, or
open air, shall be provided to any confined space which encloses the floor furnace.
The duct or nrille shall be screened and have a free area at least twice the free
area of the vent collar of the floor furnace or one sq. inc. per 1000 BTU per
hour of gas input, whichever is the ;neater, and shall be installed in such a
manner as to insure proper combustion.
22.10.4. Placement: The followin? are requirements for Properly placing the
furnace or furnaces to serve one story:
A. No floor furnace shall be installed in the floor of any aisle
or passaneway or any auditorium, public hall, or place of
assembly or in an exit -way from any such room or space.
'7alls and Corners - with the exception of wall- re-ister
models, a floor furnace shall not be placed closer t'_ian
6 inches to the nearest wall, and wall re- .sters models
shall not be placed closer than 6 inches to a corner.
55.
C. Draperies -- The furnace shall be so placed that a door, drapery, or
similar object cannot be nearer than 12 inches to any portion of the register
of the furnace.
D. No door or doors that can be closed shall be permitted between the floor
furnace location and the controllin&_ thermostat.
22.10.5. Clearance: The lowest portion of the floor furnace shall have at
least a 6 -inch clearance from the ^;eneral 7round level, except that where the
lower 6 -inch portion of the `lour furnace is sealed Dy the manufacturer to pre-
vent entrance of water, the clearance may be reduced to not less t1lan 2 inches.
'then these clearances are not present, the -round below and to the sides shall
be excavated to form a "basin- like" P--',t under the furnace so that the required
clearance is provided beneath the lowest portion of the furnace. A 12 -inch clear-
ance shall be provided on all sides except the control side, which shall have an
18 -inch clearance.
22.10.6. Access: Provisions shall be made for access to the floor furnace
by means of an openinry in the foundation wall of at least 18 by 24 incises, lo-
cated at some convenient point, and a clear and unobstructed passa ^eway to the
floor Furnace of at least 18 inches hi -h by 24 inches wide.
22.10.7. Seepage Fan: ;11-ienever the excavation exceeds 12 inches or water
seepage is likely, a watertight copper pan, concrete pit, or other suitable mater-
ial shall be used. A copper pan shall be mace of not less than 16- ounce- per - square-
foot sheet copper. The pan shall be anchored in place, so as to prevent floatino,
and the walls shall extend at least 4 inches above the ground level. with 12 inches
clearances on all sides except the control side, which shall have 13 inches clear-
ance. i';hen the equipment is sealed by the manufacturer to meet this condition,
the pan or pit may be omitted if not required for maintainin7 a dry condition
for service access.
22.10.8. : :.ind "rotection: 1--1oor furnaces shall be protected, where necessary,
aryainst severe wind conditions.
22.10.9. Upper Floor Installations: Listed :has floor furnaces may 77)e install-
ed in an upper or provided the furnace assembly projects below into a utility
room, closet, Tara -e, or similar non - habitable space. In such installations, the
floor furnace shall be enclosed completely (entire separated from the non -'saV t-
able space) with means for air inta%e to meet t-e provisions of ?ara,rraph 22.10.3.
with access facilities for servicin- on the control side, with minimum furnace
clearances of 6 inches to all sides and bottom, and witis the enclosed constructed
of portland cement plaster on metal lath or material of equal fire resistence.
22.11 DUCT FURI?ACES
22.11.1. Independent Gas Pipinry: The ,as line shall.be a separate line direct
from the meter to the duct fvrnace, unless the existin7 .-as line is of ample
capacity. Any contemplated use of existing gas pinin- shall be verified.
22.11.2. Clearance: Listed -as -fired duct Furnaces shall be installed with
clearances of at least 6 inches between adjacent walls, ceilings, and floor of
combustible construction and the appliance projectinl- flue box or draft hood,
except that duct furnaces listed for installation at lesser clearance may be in-
stalled in accordance with their listings. In no case shall the clearance be such
as to interfere with the requirements for combustion air. See yaragraph 22.10.3.
Unlisted duct furnaces shall be installed with clearances to combustible construc-
tion in accordance with the requirements for central heatinr, furnaces and boilers.
Paragraph 22.11.3. Combustible floors under unlisted duct furnaces shall be pro-
tected in an approved manner. 55.
22.11.3. Erection of Furnace: A duct _- urnace small be erected and firmly
supported in accordance with the manufacturer's instructions.
22.11.4. Accessibility: The installation of duct furnaces shall be such as
to make them accessible for servicing.
22.11.56 Circulating; Air: Circulating air shall not be taken from the same
enclosure in he?urnace is located,
22.11.6. Duct Furnaces Used 4ith Ait Conditioning Systems; Duct furnaces,
when used in conjunction w th an air con tionin, system, shall not be located
downstream from the evaporator coil6
22.12 APPLIANCE AND EQUIPI.IED1T VENTS
22.12.1. Appliances Requirinn Vents: Vents shall be required on floor furnaces,
suspended heating units, insert wall urnaces, boilers, AGA appliances having
down draft diverters, duct furnaces, attic furnaces, below the Floor heating units,
water heaters (and other gas -tired appliances desi7ned to be used with a vent.)
22.12.2. Type of Vents: Such vents for equipment Navin- an hourly BTU =nput
rating of 750,000 or less shall be constructed of approved double wall metal pipes
having an exterior casting of - alvanized iron or aluminum and an interior lining
of aluminum or non - corrodible metal and separated by not less than 1 /2 -'.rch of
dead air space, or other listed type of vent approved by the lumbin7 Inspeetor,
except that water heaters shall be vented with double wall metal pipe.
22.12.3. Supports: All vent pipes shall be supported by and secured to riryid
structural members in such manner as to prevent vertical or horizontal displace-
ment. Vent stacks shall extend continuously throu. -h the roof to a point not less
than 15 inches above same.
22.12.4. Industrial or Public Buildins: In buildings used for commercial,
industrial or public purposes, equipment havinn an hourly BTU input ratinn of
more than 750,000 shall be connected to sacks designed and built accordinry to
accepted en?ineering standards and approved by the City Plumbing Inspector.
22.12.5. Vent Caps: An effective vent cap which does not reduce the cross-
sectional area of the vent outlet and also protects against wind induced down
drafts, rain and snow shall be used.
22.12.6. Vent Plashings: Sheetmetal flashin ;s of aluminum, copper or gal -
vanizmd iron shall be used.
22.13. V311 'ING RE QUIR231, 1-rM
(The following tables apply specifically to double -wall Type B gas vents
constructed of metal, includin7 all fittings, from the draft hood outlet to top
of vent.)
56.
22.13.1 Individual Vents: Total Vent Height is the vertical distance
between the draft hood outlet and the vent top. The position or rise of a
connector, or the location of an offset, has no effect on the total vent
height. Length of Lateral is the horizontal distance or offset between
the draft hood outlet and the final vertical portion of vent. (See Figure
A, below.)
22.13.2 Procedure For Using The In-
dividual Vent Table: To determine the
proper vent size for an individual vent,
apply the Table on the following page as
follows:
LENGTH TOTAL
OF VENT
LATERAL HEIGHT
-7 APPLIANCE
figure A a
(1) Determine total vent height and length of lateral, based on
appliance and vent location, and height to top of vent pipe.
(2) Read down the total vent height column at the left to a height
equal to or greater than the total vent height.
(3) Select the horizontal row for the appropriate length of lateral
(Zero for straight vertical vents).
(4) Read across to the first column which shows a capacity equal to
or greater than the appliance nameplate heat input, except for
room heaters, floor furnaces, and vented recessed heaters, in
which case stop at the first value which is equal to or rg eater
than 1_4 times the nameplate heat input.
57
(5) If the vent size shown at the top of the column containing the
correct capacity is equal to or larger than the appliance draft
hood, use the vent shown by the Table.
(6) If, however, the vent shown is smaller than the draft hood size,
see Paragraph 22.13.4.
22.13.3 Example:
A typical individual venting
project is shown in Figure B.
The furnace has a 150,000 BTU
capacity and a 6 -inch draft hood.
Procedure:
Go down the Total Vent Height
column to 20 -foot height and
across on the line for 10 -foot
lateral.
150,000 BTU capacity is found
in 5 -inch size column.
228,000 BTU capacity is shown
in 6 -inch size column.
5 -inch size is adequate because
total height exceeds 10 feet (see
Paragraph 22.13.4).
22.13.4 Draft Hood -to -Vent Reductions: The vent size determined from the
Table may be used, even though a draft hood -to -vent reduction takes place, as
long as the vent is at least 10 -feet high. When a vent is shorter than 10
feet high, the vent should be at least as large as the draft hood.
Vents for draft hoods 12 inches in diameter or less should not be reduced
more than 1 pipe size. A 6 -to -5 -inch or a 12 -to -10 -inch reduction is a 1
�e size reduction. For larger gas burning equipment, such as boilers,
having draft hood sizes from 14 to 24 inches in diameter, reductions of more
than 2 pipe sizes are not recommended. (24 -to -20 -inch is a 2 -size reduction.)
Regardless of the size vent shown by the Tables or Calculator for such
appliances, do not connect four -inch draft hoods to three -inch vents.
TABLE 6
INDIVIDUAL VENT TABLE
NOTES:
A "" See step 4 of paragraph 22 . 13.2
8 " —" Where no capacity is given, vent may be liable to both spillage and condensation.
C Regardless of altitude, always design vent for sea level nameplate appliance input.
D "0" lateral applies only to a vertical vent attached to a top outlet draft hood.
59
MAXIMUM CAPACITY, Thousands of BTU Per Hour'
TOTAL
LENGTH
VENT
NEIGHT
OF
LATERAL
3„
4"
5'°
, 6"
7„
8°
10" 12"
14"
j1 16"
18„
20„
22„
24"
0
45
80
125
1 180
245
320
500
I 720
970
1280
1630
2000
2430
2900
4'
2'
30
59
94
131
190
250
405
580
740
960
1220
1520
1830
2180
4'
29
56
90
133
185
243
395
570
730
950
1215
1510
1820
2170
8'
27
53
1 84
125
175
132
317
1 525
700
1 930
1190
1505
1810
1 2160
0
46
86
141
205
285
370
570
850
1170
1530
1960
2430
2950
3520
2'
36
61
105
157
217
285
455
650
890
1110
1460
1850
2220
2670
6.
6
32
61
100
149
205
273
435
! 630
870
1150
1470
1820
2210
2650
12'
28
55
91
137
190
255
406
610
840
1110
1430
1795
2180
2600
0
50
94
155
235
320
415
660
970
1320
1740
2220
2750
3360
4010
8,
2'
40
75
120
180
247
322
515
1 745
1020
1340
1700
1 2110
2560
3050
8'
35
66
109
165
I 217
383
490
720
1000
1 1320
1670
1 2070
2530
3030
16'
28
58
96
1 148
1 206
281
458
681,
950
1260
1600
, 2035
2470
2960
0
53
100
166
255
345
45C
720
1060
1450
1925
2450
3050
3710
4450
10'
2'
42
81
! 119
195
273
355
560
850
! 1130
1480
•1890
2340
2840
3390
10'
36
70
115
175
145
33C
525
795
1060
1430
1840
2280
2780
3340
20'
—
60
100
154
217
306
486
735
1030
1360
1780
2230
2720
3250
0
58
112
187
285
390
525
840
1140
1720
1270
2900
3620
4410
5300
1 5
2'
48
93
150
125
316
414
675
985
1350
1770
2260
2800
3410
4080
15°
37
16
128
198
215
373
610
905
1150
1615
2150
2700
3300
3960
30'
—
60
107
169 1
143
328
553
845
1 1180
1550
2050
2620
3210
3840
0
61
119
202
301
430
575 930
1350
1900
2520
3250
1 4060
4980
6000
2'
51
100
166
249
346
410 755
1100
1520
2000
2570
3200
3910
! 4700
20'
10'
44
89
150
228
321
443 710
1045
1460
1940
2500
3130
3830
4600
20'
35
78
134
206
295
410 665
990
1390
! 1880
2430
3050
3760
4550
30'
—
1 68
120
186
273
380 616
945
1270
1 1700
2330
2980
! 3650
4390
0
64
128
220 1 336
475
650
1060
1550
2170
2920
3770
4750
5850
7060
30
2'
56
112
185 280
394
535
865
1310
1800
2380
3050
3810
1 4650
5600
20'
—
90
154 137
343
473
784
1185
1650
1200
2870
3650
1 4480
5310
40'
—
—
— 200 1
298
415
705
1075
1520
2060
2700
3480
4270
! 5140
0
66
132
228
353
500
685
1140
1730
2400
3230
4180
5270
1 6500
7860
40'
2'
59
118
198
298
420
579
960
1420
2000
I 2660
3420
4300
1 5260
6320
20'
—
96
161
261
377
516
860
1310
1830
2460
3200
4050
5000
6070
40'
—
—
—
223
333
460
785
1205
1710
2310
3020
1 3840
4780
5820
0
—
136
236
373
535
730
1150
1920
1700 3650
4740 I
6000
7380
9000
2'
—
125
213
330
470
650 !
1060
1605
2250 .I 3020
3920
4960
6130
7400
60'
30'
—
—
170
275
397
555
930
1440
2050 2780
3640
4700
5730
7000
60'
—
—
—
—
334
475
830
1285
1870 2560 1
3380
! 4330
5420
6660
0
—
—
239
384
550
755
1290
2020
2880 3900
51�
6450
8000
9150
80
2'
—
—
217
350
495
683
1145
1740
2460 3320
4310
5450
6740
8200
4d'
—
—
—
275
404
570
980
1515
2180 2980
3923
5000
6270
7650
80'
—
—
—
—
—
—
850 1
1420
2000 2750
3640
4680
5850
7200
0
—
—
—
400
560
770
1310
2050
2950
4050
5300
6700
8600
10,300
�00�
2'
—
—
375
510
700
1170
1610
2550
3500
4600
5800
7100
8800
50'
_
—
—
405
575 i
1000
1550
2250
3100
4050
5300
6600
8100
100'
—
—
—
( —
—
— i
870
1430 1
2050
2850
3750
4900
6100
7500
NOTES:
A "" See step 4 of paragraph 22 . 13.2
8 " —" Where no capacity is given, vent may be liable to both spillage and condensation.
C Regardless of altitude, always design vent for sea level nameplate appliance input.
D "0" lateral applies only to a vertical vent attached to a top outlet draft hood.
59
22.13.5. Combined Vents: A "combined" vent is a venting system for two or
more appliances at one level attached to a common vent, "Least Total Height" is
the vertical distance from the highest appliance draft hood outlet in the system
to the top of the vent. (See Figure L, Page57.) This is one fixed dimension for
any one system re -lardless of the number of placement of appliances in the system.
"Connector Rise" for any appliance is the vertical distance from its draft hood
outlet to the point where the next connector joins the system. A "Common Vent"
is the portion of the venting system above the lowest interconnection. 'then the
common vent is entirely verticals it is called a Vertical or "V" type. Otherwise
the common vent is a Lateral or "L" type.
22.13.6. Procedure for Determining Lach Vent Connector Size:
(1) Determine the Leat Total I-Iei -ht for the system.
(2) Determine the Connector ^ise for each appliance.
(3) '?nter the Vent Connector Table at the appropriate Least
Total I1-ei7ht. Continue across on the line for the first
appliance Connector :ise to the nameplate '_U ratin- (or
the next higher ratin7) for the appliance. ':ead the con-
nector vent size for that appliance at the top of this column.
(4) At the same Least Total Height, repeat the procedure for
the Connector ::ise and BTU ratin7 for each appliance.
CAUTION: Never use a connector smaller than draft hood outlet size.
22.13.7. Procedure for Determinin? Size of Common Vent:
(1) Add together all appliance BTU input ratin:;s to determine
the total B'T'U rating.
(2) Enter the Common Vent Table at the same Least Total IIeidht
used in Paragraph 22.13.6.
(3) Continue across either on the "L" line or on the "V" line
as indicated in Paragraph 22.13.5.
(4) Stop at the first value which is equal to or ?reater than
the total BTU ratin!.
(5) 'ead the size of the Common Vent at the top of this column.
See Pages 61 and 62.
22.14 BLEC MICAL COI M- CTICUS
22.14.1. Mational Electrical Code: P -11 electrical connections between ?as
appliances and the building wiring shall conform to the National Electrical
Code, ASA Cl, 1956.
60.
CAUTION: Regardless of table results, the Common Vent must always be
at least as large as the largest connector. If both connectors
are the same size, the common vent must be at least one size
larger.
15 FEET
LEAST
TOTAL
HEIGHT
4
0
140,000 TOTAL INPUT;
COMMON VENT
5INCH SIZE
FURNACE
105,000
Figure A shows a typical two - appliance combined -vent system. To determine
common vent and individual connector sizes, use the following procedure:
(1) Enter the Vent Connector Table at a Least Total Height of 15
feet and a Connector Rise of 1 foot. Read across to the BTU
rating next higher than the water heater rating. This is the
column showing 53,000 BTU. At the top of this column a 4 -inch
connector size is designated for the water heater. See Figure
A, above.
(2) Enter the Vent Connector Table at
(15 feet) but this time for the f1
feet. Read across to 111,000 BTU
105,000 BTU). At the top of this
of 5 inches is designated for the
B, above.
the same Least Total Height
.irnace Connector Rise of 3
(the next higher rating above
column a vent connector size
furnace connector. See Figure
(3) The sum of the two ratings is 140,000 BTU. Enter the Common
Vent Table at the same Least Total Height (15 feet) and on
the "V" line. For a total capacity of 144,000 BTU, the column
heading directs a 5 -inch common vent for this system. See
Figure C, above.
61
15 FEET
LEAST
TOTAL
q,
HEIGHT
THREE FEET
CONNECTOR RISE ,
5 INCH
WATER
SIZE
HEATER
FURNACE
35,000
105,000
140,000 TOTAL INPUT;
COMMON VENT
5INCH SIZE
FURNACE
105,000
Figure A shows a typical two - appliance combined -vent system. To determine
common vent and individual connector sizes, use the following procedure:
(1) Enter the Vent Connector Table at a Least Total Height of 15
feet and a Connector Rise of 1 foot. Read across to the BTU
rating next higher than the water heater rating. This is the
column showing 53,000 BTU. At the top of this column a 4 -inch
connector size is designated for the water heater. See Figure
A, above.
(2) Enter the Vent Connector Table at
(15 feet) but this time for the f1
feet. Read across to 111,000 BTU
105,000 BTU). At the top of this
of 5 inches is designated for the
B, above.
the same Least Total Height
.irnace Connector Rise of 3
(the next higher rating above
column a vent connector size
furnace connector. See Figure
(3) The sum of the two ratings is 140,000 BTU. Enter the Common
Vent Table at the same Least Total Height (15 feet) and on
the "V" line. For a total capacity of 144,000 BTU, the column
heading directs a 5 -inch common vent for this system. See
Figure C, above.
61
0
a
5'
0
7
O
O
a
V-
N
p
p
0
0
Ot
0
A
0
c
0
N
0
N
O
Oct
O•
A�
°�
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22.14.2. Electric Ignition and Control Devices: No devices employin, or
depending upon an electrical current shall be used to control or unite a gas
supply if of such a character that failure of the electrical current could re-
sult in the escape of unburned gas or in failure to reduce the supply of ,as
under conditions which would normally result in its reduction unless other means
are provided to prevent the development of dangerous temperatures, pressures or
the escape of ryas.
22.14.3. Electrical Ground: The -as pipin7 shall not be used as a - rovndin-
electrode for an electric ruse panel, telephone circuit or li- htning arrester,
nor shall electric circuits utilize gas pipin -, casin^ or controls,
panels or other metal parts in lieu of wirin -. This provision shall not apply
to low volta!e control and ignition circuits, and to electronic flame detection
device circuits incorporated as part of the appliance.
22.15 APPLIANCE "JITH ACCEPTED S_I-11DARD
22.15.1. National Standard: All work installed under the Gas Fittin; Section
Of this code shall comply to the standard of the National Board of Fire Under-
writers for the installation of ,as piping and gas appliances in buildings as
recommended by the National Fire Protection Association, a pamphlet normally
referred to as 11B .--U Pamphlet No. 54. 'xcent where specifically changed by Table
within this code, all provisions of NBVU Pamphlet Ito. 54 shall apply to work
installed under this code.
CHAPTBa 23
TP.AIU3n PAPIX PLUIAEING AIM DRAINAGE SYSTEP.IS
23.1 GSk RAL
23.1.1. Adherence to Code: Trailer part; plumbing and draina7e systems shall
be designed and installed in accordance with the provisions of this Chapter and
the installation requirements of this code.
23.1.2. Prohibited Piping Installation: No gas pipinz, non-metallic drain-
age or vent pipes, sewarye disposal system or parts thereof, shall be located in
any area where a trailer may be parked, or a cabana,, or other structure may be
built.
23.1.3. Plans and Specifications Required: refore any plumbing or sewage
disposal facilities are installed or altered in any trailer park, duplicate
plans and specifications shall be filed and proper permits obtained from the City
PlumbinM Inspector's Department. Plans shall show in detail:
A. Plot plan of park, property lines, driveways, existin or
proposed buildings and the sizes of trailer sites.
B. Complete specifications and pipin.- layout of proposed
plumbing system or alteration.
C. Complete specification and layout of proposed sewage
disposal system or alteration.
23.2 DRAIAIAGE MTD VEIT_r IIISTA LLA'.TIOU
23.2.1. Drainage Installation: Fach trailer site shall be provided with a
3 -inch I.P.S. male or female threaded connection extendin" above the surrounding
63.
grade from a 3 -inch, minimum size, vented "'.'" trap. See 7 ;ure F. Traps shall be
located with reference to the immediate boundary lines of the desi. -nated space
or area within each trailer sate that will acctually be occupied by the trailer.
Each such trap shall be located in the rear third quarter section along the left
boundary line of the trailer parkin- area. See Fi-,ure G, 3ach trap inlet connection
shall be protected at Trade by a concrete pad not less than 4 inches thick and 100
inches square if 900 ell is used. See Figure 3,. Concrete pad should be not less
than u inches thick and 16 inches square if vertical trap inlet is used. See Figure
D. I-To trap shall be more than 24 inches below Zrade. 3ach trap inlet connection
shall be effectively capped with a screw type cap or plug when not in use.
23.2.2. Trailer Drainage Connectors: Connectors from trailer drain to trap
inlet shall be o sanitary semi -rigid pipe installed so that there is no trap in
the connector.
23.2.3. Eaterials: All traps, risers from traps, horizontal vents and the first
5 feet from the trap on each trap branch shall be of material approved for under-
:-,round use within a building, provided, however, that approved type non - metallic
pipe may be used for the balance of the system when not under any trailer or any
possible future buildin7 site.
23.2.4. 'let Vents: Drainage systems may be wet vented as set forth in this
section of the code.
23.2.5. Location and Size of Vents: Each wet vented draina7e system shall be
provided with a vent not more than 15 eet downstream from its upper trap, and
lon7 mains shall be provided wit` additional rel 5.ef vents at intervals ' of not more
than 100 feet thereafter. The minimum size of any vent serv4n7 a wet vented system
shall be not less than 3 inches in diameter and t need not be larger than 4 inches
in diameter. See 7i lure C.
23.2.6. ProM bited `.let Vents: 'Phe drainage system of any buildinry shall not
dischar -e into a wet vented line. No building, or house, sewer shall serve as a
wet vent.
23.2.7. Vent Supports and Protection: dents shall be securely fastened to
4 :' 4 redwood post or have equivalent support. Galvanized iron or galvanized steel
vents may be anchored in a substantial concrete base and the redwood post eliminated,
providing that the concrete extends not less than 12 inches above the junction
with the cast -iron pipe or fitting. Galvanized vent pipe, steel or iron, may extend
below -round vertically and may directly intersect a drainage line, providing the
entire section around the vent pipe and drainage line is encased in concrete to
prevent raovement. Galvanized vent pipe that is to be encased in concrete shall first
be coated with bituminous paint or equivalent protective material.
23.2.5. Size and Location of Clean Cuts: Cleanouts shall be provided at the
upper end of each horizontal draina -e line and at intervals of not more than 50 feet
thereafter. 3ach cleanout shall be brow -ht up to -rade and made readily accessible.
Cleanout fittings shall not be less than the size of the pipe except that none need
be lar-er than 4 inches.
23.2.9. Pipe Sizes: For the purpose of determinin7 pipe sizes, each trailer
site connection shall be assi^ned a waste loading value of 6 f".xture units and
each trailer par'.: drainage system shall be sized as provided in Para7raph 23.2.10/
64.
23.2.10, Pipe Sizes for Trailer Part: Draina -e System:
IJIax. No. Trailers I lax, No, Trailers
Individually Vented :Jet Vented Size of
System System Drain
2 1 `ft'
30 10 4'0
100 50 6"
400 ** ^"
The maximum len;th o.L any 3 -inch trap ranch is 6 _ eet rrom its vent.
** "ill require special desi -.:n. Consult ?lumbin^ Inspector.
23.3 11A_`E:
TRAILER PARK PLUMBING DETAILS
Fig. A
4 "x 4'*Pos
Fig. C
Vent 10 f t. High. 10 ft.
from Property Line
Strap
Trailer Park
Connection
C.O. to Grade
Concreted
Pad
Protect -Pipe/ Fig. B
thru Concrete
Trailer Coach Sewer Connection
Flexible Sanitary Trailer
Connection to Permit Sway of
Trailer Without Damage to
Plumbing
— 4t• 4
iY `.s Metal Cover
Concrete Cap When Not in
Use
Fig. D
VAllow 6 fixture units
v for each Trailer Trap
No Clay Pipe Within 1 ft. DurAlb of Surface Pad First 5 ft. cast iron p
Max. Trap Arm 3" - 6 ft.
Max. Trap Arm 4" - 15 ft.
Fig. E
..
Max.
Riser 24"
Spring Loaded
Gate
/Check Valve
Valve
JG Relief Valve
At --Hose Connection
Relief Drain
MIAt.
/ Z,, M I A/.
Fig. A
4 "x 4'*Pos
Fig. C
Vent 10 f t. High. 10 ft.
from Property Line
Strap
Trailer Park
Connection
C.O. to Grade
Concreted
Pad
Protect -Pipe/ Fig. B
thru Concrete
Trailer Coach Sewer Connection
Flexible Sanitary Trailer
Connection to Permit Sway of
Trailer Without Damage to
Plumbing
— 4t• 4
iY `.s Metal Cover
Concrete Cap When Not in
Use
Fig. D
VAllow 6 fixture units
v for each Trailer Trap
No Clay Pipe Within 1 ft. DurAlb of Surface Pad First 5 ft. cast iron p
Max. Trap Arm 3" - 6 ft.
Max. Trap Arm 4" - 15 ft.
Fig. E
..
Max.
Riser 24"
TYPICAL WET VENT INSTALLATION
Conventional system
(Size according to
unit-load)
Keep Vents Not Less
than 10" from property
line
Relief Vent
C.O. ADO! Ever 100'
qX
Trunk Line
Grade (2%)
LK",
Cleanout
Every 50' Wet Vented Branch
1/8" Grade (1 %)
Fig. F
4" - MAXIMUM TRAP ARM 15'
3" - MAXIMUM TRAP ARM 6'
C. 0.
Ar-
--* tJ
MAXIMUM NO. OF TRAPS ON ANY SINGLE BRANCH OF WET VENTED SYSTEM:
3" - Pipe 1 Trap
4" - Pipe 10 Traps
6" - Pipe 50 Traps
MAIN VENT FOR 3" BRANCH 3" - PIPE (RELIEF 3 ")
MAIN VENT FOR 4" BRANCH 3" - PIPE (RELIEF 3 ")
MAIN VENT FOR 6" BRANCH 4" - PIPE (RELIEF 3 ")
C. 0.
FOR INDIVIDUALLY VENTED TRAILERS SIZE VENTS AND DRAINS TO HOUSE PLUYk ;ING STANDARDS
67
r
TRAILER COURT DETAILS
All Trailer Space Must Be Shown And
Boundary Lines Approved Before Locating Plumbing
Keep Trap 1' to
3' from this line
And 1' Min. from
Trailer Wheel
Front of Trailer Site
Trailer
First Quarter
of Trailer
Second Quarter
of Trailer
Third Quarter
of Trailer
Fourth Quarter
of Trailer
5 Min. This Distance
1 Varies
Rear of Space
Fig. G
,n
W
a
C1!A_ T: :: 24
?EI•ILTY AND CLOSIPG ?P,CVISICd,IS
24.1 PROHIBITING `!CP.i'_ :WITH= A PY- EIT: iio person, firm or corporation or other
entity shall install or perform any plumbing wort: as defined in this Code without
first having secured a permit in accordance with the provisions of this Code.
24.2. P^CY.I13I'TIIdG USB Or- WTE.MM-3D IIiSTALLATIMS: Po person, Firm, corporation or
other entiv.ty shall cause or permit any pluW 777 installation to be connected with
the City water or sewer system or to any gas distributin7 system nor shall such
person, firm, corporation or other entity use or permit the use of any such plumt-
inN installation, or cause or permit any water, sewage or ?as to flow throuryh the
same before it bas been inspected and approved as herein provided.
24.3. MTALTI?S: Any person, either '0y : :inself or a=gent, and any firm, corpora-
tion or other entity w7�0 violates any of the provisions of this Code shall be
deemed ^,uilty of a misdemeanor and, upon conviction of any such "rzolation, shall
be fined in any sum not to exceed CPI-- UIUTIDRED DOLLVS (,"100.00); and each day
during which such violation continues shall constitute a separate and distinct
offense. In any case of a violation of any of the terms or provisions of this
ordinance by any corporation, the officers and a7ents actively in char -e of the
business of such corporation shall be subject to the penalty herein provided. Any
offense defined herein which has been defined by laws of the State ofF Texas as an
offense and for which penalty has been prescribed shall be punished as provided
in said State Law, and nothing herein shall be held as fixing any penalty contrary
to a penalty provided by the laws of the State of 'Texas.
24.4. FCR11 OF COILLE:INTS: In any prosecution hereunder, it shall not be necessary
for the complaint to negative any exceptions contained in this Code concerning
any prohibited act, but any such exceptions may be urged as a defense by any person
charged by such complaint.
24.5. ?,-_3S ?ONSIBILI Tii FCR DB712CTS WCHANGMDt This Code does not relieve from or
lesson the responsibility or liability of any person owning, operating, controll-
in;, or installin7 any plumbin?, 7as piping or gas -fired appliances, for damages
to person or property caused by any defect therein, nor shall the City be regard-
ed as assuming any such liability by reason of t7,e inspection authorized therein
or certificate of approval issued as herein provided.
24.6. S .V32F__2ILITY CLAUSE: If any provision of this Code, or the application there-
of to any person or circumstances, is 'geld invalid, the remainder of the Code,
and the application of suc_z provision to other persons or circumstances, shall not
be affected thereby.
24.7. 1'31PBALIPIC CUMSE: All ordinances or parts of ordinances in conflict "ere -
with are hereby repealed.
PASSED A1ID APPROVED this )' " day of V11 CG 1963.
A=MST :
&,la l
City Secretary 69.