The 2012 Edition of the Seattle Plumbing Code (SPC) is a custom plumbing code published for the City of Seattle. It also protects against hazards that may arise from the use of plumbing piping and systems by regulating and controlling the design, construction, installation, quality of materials, location and operation of plumbing piping systems within the City of Seattle. Based on the 2012 Uniform Plumbing Code, this code includes the Washington State and Seattle Amendments integrated into the Uniform Plumbing Code.

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2	Preface
11	Table of Contents Chapter 51-56 WAC State Building Code Adoption and Amendment of the 2012 Edition of the Uniform Plumbing Code Chapter 1 Administration Chapter 2 Definitions
12	Chapter 3 General Regulations
13	Chapter 4 Plumbing Fixtures and Fixture Fittings
14	Chapter 5 Water Heaters
15	Chapter 6 Water Supply and Distribution
16	Chapter 7 Sanitary Drainage
17	Chapter 8 Indirect Wastes
18	Chapter 9 Vents Chapter 10 Traps and Interceptors
19	Chapter 11 Storm Drainage
20	Chapter 12 Fuel Gas Piping
22	Chapter 13 Health Care Facilities and Medical Gas and Vacuum Systems
24	Chapter 14 Referenced Standards Chapter 15 Firestop Protection Chapter 16 Alternate Water Sources for Nonpotable Applications
25	Chapter 17 Nonpotable Rainwater Catchment Systems Appendices Table of Contents Appendix A Recommended Rules for Sizing the Water Supply System Appendix B Explanatory Notes on Combination Waste and Vent Systems Appendix C Alternate Plumbing Systems Appendix D Sizing Storm Water Drainage Systems Appendix E Manufactured/Mobile Home Parks and Recreational Vehicle Parks Appendix F Firefighter Breathing Air Replenishment Systems Appendix G Sizing of Venting Systems Serving Appliances Equipped with Draft Hoods, Category I Appliances, and Appliances Listed for Use with Type B Vents Useful Tables Index
27	Chapter 51-56 WAC State Building Code Adoption and Amendment of the 2012 Edition of the Uniform Plumbing Code WAC 51-56-001 Authority. WAC 51-56-002 Purpose. WAC 51-56-003 Uniform Plumbing Code. WAC 51-56-004 Conflicts Between Appendix I and the Manufacturer’s Installation Instructions. WAC 51-56-007 Exceptions. WAC 51-56-008 Implementation.
29	Chapter 1 Administration Section 101 Title 101.1 Title. Section 102 Purpose 102.1 Purpose. Section 103 Applicability and Scope 103.1 Scope. 103.2 Internal Consistency. 103.3 Referenced Codes and Standards. 103.4 Appendices. 103.5 Metric Units. 103.6 References to Other Codes. Section 104 Application to Existing Plumbing Systems 104.1 Additions, Alterations or Repairs. 104.2 Existing Installations. 104.3 Changes in Building Occupancy. 104.4 Maintenance.
30	104.5 Historic Buildings and Structures.
31	Section 109 Unsafe Equipment and Hazard Correction Order 109.1 Unsafe Equipment. 109.2 Emergency Order. 109.2.1 Service of Emergency Order. 109.2.2 Effect of Emergency Order. 109.3 Hazard Correction Order. 109.3.1 Service of Hazard Correction Order. 109.3.2 Effect of Hazard Correction Order. Section 110 Administrative Review 110.1 Administrative Review by the Authority Having Jurisdiction. 110.2 Administrative Review by the Construction Codes Advisory Board. Section 111 Enforcement, Violations and Penalties 111.1 Violations.
32	111.2 Notice of Violation. 111.2.1 Service of Notice of Violation. 111.2.2 Review of Notice of Violation by the Authority Having Jurisdiction. 111.2.2.1 Review Procedure. 111.2.2.2 Decision. 111.2.2.3 Order. 111.3 Stop Work Orders. 111.3.1 Service of Stop Work Order. 111.3.2 Effective Date of Stop Work Order. 111.3.3 Review of Stop Work Orders by the Authority Having Jurisdiction. 111.3.3.1 Review Procedure. 111.3.3.2 Decision.
33	111.3.3.3 Order. 111.4 Authority to Disconnect Utilities in Emergencies. 111.5 Authority to Condemn Equipment. 111.6 Connection After Order to Disconnect. 111.7 Civil Penalties. 111.8 Enforcement in Municipal Court. 111.9 Judicial Review. 111.10 Alternative Criminal Penalty. 111.11 Additional Relief. Section 112 Recording of Order and Notices 112.1 Recording. Section 113 Rules of the Authority Having Jurisdiction 113.1 Authority. Section 114 Construction Codes Advisory Board 114.1 CCAB Committee.
34	Section 115 Permits 115.1 Permits Required. 115.2 Work Exempt from Permit. 115.3 Compliance Required. 115.4 Flood Hazard Areas. 115.5 Emergency Repairs. Section 116 Application for Permit 116.1 Application. Section 117 Application Review and Permit Issuance 117.1 Issuance. 117.1.1 Decision and Issuance of Permit. 117.1.2 Compliance with Approved Plans and Permit. 117.2 Validity of Permit.
35	117.3 Permit Expiration and Renewal. Section 118 Fees 118.1 Fees. Section 119 Inspections 119.1 General. 119.2 Inspection Requests. 119.3 Access for Inspection. 119.4 Inspection Record. 119.5 Approvals Required. 119.5.1 Effect of Approval. 119.6 Operation of Plumbing Equipment. 119.7 Other Inspections. 119.8 Special Investigation. 119.9 Reinspections. 119.9.1 Reinspection Fee.
37	Chapter 2 Definitions 201.0 General. 202.0 Definition of Terms. 202.1 General. 203.0 – A – 204.0 – B –
38	205.0 – C –
39	206.0 – D – 207.0 – E – 208.0 – F –
40	209.0 – G –
41	210.0 – H – 211.0 – I – 212.0 – J – 213.0 – K –
42	214.0 – L – 215.0 – M – 216.0 – N –
43	217.0 – O – 218.0 – P –
44	219.0 – Q – 220.0 – R – 221.0 – S –
45	222.0 – T –
46	223.0 – U – 224.0 – V – 225.0 – W –
47	226.0 – X – 227.0 – Y – 228.0 – Z –
49	Chapter 3 General Regulations 301.0 Materials – Standards and Alternates. 301.1 Minimum Standards. 301.1.1 Marking. [W] 301.1.2 Standards. 301.1.3 Existing Buildings. 301.2 Alternate Materials and Methods of Construction Equivalency. 301.2.1 Testing. 301.2.1.1 Tests. 301.2.1.2 Request by Authority Having Jurisdiction. 301.3 Flood Hazard Areas. 301.3.1 Flood Hazard Areas Subject to High-Velocity Wave Action. 301.4 Alternative Engineered Design.
50	301.4.1 Permit Application. 301.4.2 Technical Data. 301.4.3 Design Documents. 301.4.4 Design Approval. 301.4.5 Design Review. 301.4.6 Inspection and Testing. 302.0 Iron Pipe Size (IPS) Pipe. 302.1 General. 303.0 Disposal of Liquid Waste. 303.1 General. 304.0 Connections to Plumbing System Required. 304.1 General. 305.0 Damage to Drainage System or Public Sewer. 305.1 Unlawful Practices. 306.0 Industrial Wastes. 306.1 Detrimental Wastes. 306.2 Safe Discharge. 307.0 Location. 307.1 System. 307.2 Ownership. 308.0 Improper Location. 308.1 General. 309.0 Workmanship. 309.1 Engineering Practices.
51	309.2 Concealing Imperfections. 309.3 Burred Ends. 309.4 Installation Practices. 310.0 Prohibited Fittings and Practices. 310.1 Fittings. 310.2 Drainage and Vent Piping. 310.3 Waste Connection. [W] 310.4 Use of Vent and Waste Pipes. 310.5 Obstruction of Flow. 310.6 Dissimilar Metals. 310.7 Direction of Flow. 310.8 Screwed Fittings. 311.0 Independent Systems. 311.1 General. 312.0 Protection of Piping, Materials, and Structures. 312.1 General. 312.2 Installation. 312.3 Building Sewer and Drainage Piping. 312.4 Corrosion, Erosion, and Mechanical Damage. 312.5 Protectively Coated Pipe. [W] 312.6 Freezing Protection. [W] 312.7 Fire-Resistant Construction. 312.8 Waterproofing of Openings.
52	312.9 Steel Nail Plates. 312.10 Sleeves. 312.10.1 Building Loads. 312.10.2 Exterior Walls. 312.10.3 Firewalls. 312.11 Structural Members. 312.12 Rodentproofing. 312.12.1 Meter Boxes. 312.12.2 Metal Collars. 312.12.3 Tub Waste Openings. 313.0 Hangers and Supports. 313.1 Suspended Piping. 313.2 Piping Support. 313.3 Underground Piping. 313.4 Strength. 313.5 Piping, Fixtures, Appliances, and Appurtenances. 313.6 Hanger Rod Sizes. 313.7 Gas Piping. 314.0 Trenching, Excavation, and Backfill. 314.1 Trenches. 314.2 Tunneling and Driving. 314.3 Open Trenches. 314.4 Excavations.
53	315.0 Joints and Connections. 315.1 Unions. 315.2 Prohibited Joints and Connections. 315.2.1 Obstruction. 316.0 Increasers and Reducers. 316.1 General. 317.0 Food-Handling Establishments. 317.1 General. 318.0 Test Gauges. 318.1 General. 318.2 Pressure Tests (10 psi or less). 318.3 Pressure Tests (greater than 10 psi to 100 psi). 318.4 Pressure Tests (exceeding 100 psi). 318.5 Pressure Range. 319.0 Medical Gas and Vacuum Systems. 319.1 General.
55	Chapter 4 Plumbing Fixtures and Fixture Fittings 401.0 Materials – General Requirements. 401.1 Quality of Fixtures. 401.2 Lead. 402.0 Installation. 402.1 Cleaning. 402.2 Joints. 402.3 Securing Fixtures. 402.4 Wall-Hung Fixtures. [W] 402.5 Setting. 402.6 Flanged Fixture Connections. 402.6.1 Closet Rings (Closet Flanges). 402.6.2 Securing Closet Flanges. 402.6.3 Securing Floor-Mounted, Back-Outlet Water Closet Bowls. 402.7 Accessible Plumbing Facilities.
56	402.8 Supply Fittings. 402.9 Installation. 402.10 Design and Installation of Plumbing Fixtures. 402.11 Slip Joint Connections. 402.12 Future Fixtures. 403.0 Water-Conserving Fixtures and Fittings. [W] 403.1 The purpose of this Section shall be to implementwater conservation performance standards in accordance withRCW 19.27.170. [W] 403.2 Application. 403.3 Water Efficiency Standards. [W] 403.3.1 Standards for Vitreous China Plumbing Fixtures. [W] 403.3.1.1 The following standards shall be adopted as plumbing materials, performance standards, and labeling standards for water closets and urinals. [W] 403.3.1.2 The maximum water use allowed in gallons per flush (gpf) or liters per flush (lpf) for any of the following water closets shall be the following: [W] 403.3.1.3 The maximum water use allowed for any urinal shall be 1.0 gallons per flush or 3.78 liters per flush. [W] 403.3.1.3.1 Nonwater Urinals. [W] 403.3.1.4 No urinal or water closet that operates on a continuous flow or continuous flush basis shall be permitted. [W] 403.3.1.5 This section does not apply to fixturesinstalled before the effective date of this Section,that are removed and relocated to another roomor area of the same building after the effective date ofthis Section. [W] 403.3.2 Standards for Plumbing Fixture Fittings. [W] 403.3.2.1 The following standards are adopted as plumbing material, performance requirements, and labeling standards for plumbing fixture fittings.
57	[W] 403.3.2.2 The maximum water use allowed for any shower head is 2.5 gallons per minute or 9.5 liters per minute. [W] 403.3.2.3 The maximum water use allowed in gallons per minute (gpm) or liters per minute (lpm) for any of the following faucets and replacement aerators is the following: [W] 403.4 Metering Valves. [W] 403.5 Pre-Rinse Spray Valve. [W] 403.6 Implementation. [W] 403.6.1 The standards for water efficiency and labeling contained within Section 403.3 shall be in effect as of July 1, 1993, as provided in RCW 19.27.170 and amended July 1, 1998. [W] 403.6.2 No individual, public or private corporation, firm, political subdivision, government agency, or other legal entity, may, for purposes of use in the state of Washington, distribute, sell, offer for sale, import, install, or approve for installation any plumbing fixtures or fittings unless the fixtures or fittings meet the standards as provided for in this Section. 403.7 Trap Priming Water. 403.7.1 Volume Limitation. 403.8 Automatic In-ground Irrigation System Designand Installation. 403.8.1 Automatic in-ground irrigation systems shall have an automatic clock, electric valves, and the ability to sense rainfall. 403.8.2 Automatic in-ground irrigation systems shall include the following where applicable: 403.8.3 Landscaped areas greater than 30,000 square feet shall also comply with the following:
58	404.0 Overflows. 404.1 General. 405.0 Strainers and Connections. 405.1 Strainers. 405.2 Continuous Wastes. 406.0 Prohibited Fixtures. 406.1 Prohibited Water Closets. 406.2 Prohibited Urinals. 406.3 Miscellaneous Fixtures. 407.0 Special Fixtures and Specialties. 407.1 Water and Waste Connections. 407.2 Special Use Sinks. 407.3 Special Use Fixtures. 407.4 Zinc Alloy Components. 408.0 Showers. 408.1 Application. 408.2 Water Consumption. 408.3 Individual Shower and Tub-Shower Combination Control Valves. [W] 408.4 Waste Outlet.
59	408.5 Finished Curb or Threshold. [W] 408.6 Shower Compartments. 408.7 Lining for Showers and Receptors.
60	408.7.1 Tests for Shower Receptors. 408.8 Public Shower Floors. 408.9 Location of Valves and Heads. 408.10 Water Supply Riser. 409.0 Bathtubs and Whirlpool Bathtubs. 409.1 Application. 409.2 Waste Outlet. 409.3 Overflow. 409.4 Limitation of Hot Water in Bathtubs and Whirlpool Bathtubs. 409.5 Backflow Protection. 409.6 Installation and Access. 410.0 Bidets. 410.1 Application. 410.2 Backflow Protection. 410.3 Limitation of Water Temperature in Bidets. 411.0 Water Closets. 411.1 Water Closet Bowls. 411.2 Water Closet Seats. 411.2.1 Type. 411.2.2 Size. 412.0 Urinals. 412.1 General. 413.0 Flushing Devices for Water Closets and Urinals. 413.1 Application.
61	413.2 Flushing Devices Required. 413.3 Flushometer Valves. 413.4 Water Supply for Flush Tanks. 413.5 Overflows in Flush Tanks. 414.0 Dishwashing Machines. 414.1 Application. 414.2 Backflow Protection. [W] 414.3 Drainage Connection. 415.0 Drinking Fountains. 415.1 Application. 415.2 Where Required. 415.3 Drainage Connection. 415.4 Location. 416.0 Emergency Eyewash and Shower Equipment. 416.1 Application. 416.2 Water Supply. 416.3 Installation. 416.4 Location. 416.5 Drain. 417.0 Faucets and Fixture Fittings. 417.1 Application. 417.2 Deck Mounted Bath/Shower Valves. 417.3 Handheld Showers. 417.4 Faucets and Fixture Fittings with Hose Connected Outlets.
62	417.5 Separate Controls for Hot and Cold Water. 418.0 Floor Drains. 418.1 Application. 418.2 Strainer. [W] 418.3 Location of Floor Drains. 418.4 Food Storage Areas. 418.5 Floor Slope. 419.0 Food Waste Disposal Units. 419.1 Application. 419.2 Drainage Connection. 419.3 Water Supply. 420.0 Sinks. 420.1 Application. 420.2 Water Consumption. 420.3 Waste Outlet. 421.0 Fixtures and Fixture Fittings for Persons with Disabilities. 421.1 General. 421.2 Limitation of Hot Water Temperature for Public Lavatories. [W] 422.0 Minimum Number of Required Fixtures. [W] Sections 422.1 through 422.5 and Table 422.1 are not adopted.
63	Chapter 5 Water Heaters 501.0 General. [W] 501.1 Applicability. 502.0 Permits. 502.1 General. 503.0 Inspection. 503.1 Inspection of Chimneys or Vents. 503.2 Final Water Heater Inspection. 504.0 Water Heater Requirements. [W] 504.1 Location. 504.1.1 Self-Closing Doors 504.1.2 Gasketing. 504.2 Vent. 504.3 Clearance. 504.3.1 Listed Water Heaters. 504.3.2 Unlisted Water Heaters. TABLE Table 501.1 First Hour Rating
64	504.4 Pressure-Limiting Devices. 504.5 Temperature-Limiting Devices. 504.6 Temperature, Pressure, and Vacuum Relief Devices. 505.0 Oil-Burning and Other Water Heaters. 505.1 Water Heaters. [W] 505.2 Safety Devices. 505.3 Oil-Fired Water Heaters. 505.4 Indirect-Fired Water Heaters. 505.4.1 Single-Wall Heat Exchanger. [W] 506.0 Air for Combustion and Ventilation. [W] Sections 506.1 through 506.9 are not adopted. 507.0 Other Water Heater Installation Requirements. 507.1 Dielectric Insulator. 507.1.1 Support of Appliances. 507.2 Seismic Provisions. 507.2.1 Structural Capacity. 507.3 Ground Support. 507.4 Drainage Pan.
65	507.5 Relief Valve Discharge. [W] Sections 507.6 through 507.9 are not adopted. 507.10 Protection of Gas Appliances from Fumes or Gases other than Products of Combustion. 507.11 Process Air. 507.12 Flammable Vapors. [W] 507.13 Installation in Garages. 507.13.1 Physical Damage. 507.13.2 Access from the Outside Only. 507.14 Installation in Commercial Garages. 507.14.1 Parking Structures. 507.14.2 Repair Garages. 507.15 Installation in Aircraft Hangars. [W] Section 507.16 is not adopted. [W] Sections 507.18 through 507.22 are not adopted. 507.23 Combination of Appliances. 507.24 Installation Instructions. 507.25 Protection of Outdoor Appliances. 507.26 Accessibility for Service.
66	508.0 Appliances on Roofs. 508.1 General. 508.1.1 Load Capacity. 508.1.2 Fasteners. 508.2 Installation of Appliances on Roofs. 508.2.1 Clearance. 508.2.2 Electrical Power. 508.2.3 Platform or Walkway. 508.3 Access to Equipment and Appliances on Roofs. 508.3.1 Access. 508.3.2 Access Type. 508.3.3 Permanent Lighting. 508.4 Appliances in Attics and Under-Floor Spaces. 508.4.1 Length of Passageway. 508.4.2 Width of Passageway. 508.4.3 Work Platform. 508.4.4 Lighting and Convenience Outlet. [W] Sections 509.0 through 511.0 are not adopted.
67	Chapter 6 Water Supply and Distribution 601.0 Hot and Cold Water Required. 601.1 General. 601.2 Identification of a Potable and Nonpotable Water System. 601.2.1 Potable Water. 601.2.2 Color and Information. 601.2.2.1 Alternate Water Sources. 601.2.3 Fixtures. 601.2.4 Outlets. 602.0 Unlawful Connections. 602.1 Prohibited Installation. TABLES Table 601.2.2 Minimum Length of Color Field and Size of Letters
68	602.2 Cross-Contamination. 602.3 Backflow Prevention. 602.4 Approval by Authority. 603.0 Cross-Connection Control. [W] 603.1 General. [W] 603.2 Approval of Devices or Assemblies. 603.3 Backflow Prevention Devices, Assemblies, and Methods. 603.3.1 Air Gap. 603.3.2 Atmospheric Vacuum Breaker (AVB). 603.3.3 Hose Connection Backflow Preventer. 603.3.4 Double Check Valve Backflow Prevention Assembly (DC). 603.3.5 Pressure Vacuum Breaker Backflow Prevention Assembly (PVB). 603.3.6 Spill-Resistant Pressure Vacuum Breaker (SVB). 603.3.7 Reduced-Pressure Principle Backflow Prevention Assembly (RP). 603.3.8 Double Check Detector Fire Protection Backflow Prevention Assembly. 603.3.9 Reduced Pressure Detector Fire Protection Backflow Prevention Assembly.
69	[W] Table 603.2 Backflow Prevention Devices, Assemblies, and Methods
70	603.4 General Requirements. 603.4.1 Backflow Prevention Valve. [W] 603.4.2 Testing. 603.4.3 Access and Clearance.
71	603.4.4 Connections. 603.4.5 Hot Water Backflow Preventers. 603.4.6 Integral Backflow Preventers. 603.4.7 Freeze Protection. 603.4.8 Drain Lines. 603.4.9 Prohibited Locations. 603.5 Specific Requirements. 603.5.1 Atmospheric Vacuum Breaker. 603.5.2 Ballcock. 603.5.3 Backflow Prevention. 603.5.4 Heat Exchangers. Table 603.3.1 Minimum Air Gaps for Water Distribution
72	603.5.5 Water Supply Inlets. [W] 603.5.6 Protection from Lawn Sprinklers and Irrigation Systems. 603.5.6.1 Systems with Pumps. 603.5.6.2 Systems with Backflow Devices. 603.5.6.3 Systems with Chemical Injectors. 603.5.7 Outlets with Hose Attachments. 603.5.8 Water-Cooled Equipment. 603.5.9 Aspirators. [W] 603.5.10 Steam or Hot Water Boilers. 603.5.11 Nonpotable Water Piping. [W] 603.5.12 Beverage Dispensers.
73	[W] 603.5.13 Prohibited Location. 603.5.14 Deck-Mounted and Equipment-Mounted Vacuum Breakers. [W] 603.5.15 Protection from Fire Systems. 603.5.15.1 Fire Department Connection. 603.5.15.2 Chemicals. 603.5.15.3 Hydraulic Design. 603.5.16 Health Care or Laboratory Areas. 603.5.17 Special Equipment. 603.5.18 Potable Water Outlets and Valves. 603.5.19 Pure Water Process Systems. 603.5.19.1 Dialysis Water Systems. 603.5.20 Plumbing Fixture Fittings. 603.5.21 Swimming Pools, Spas, and HotTubs.
74	604.0 Materials. 604.1 Pipe, Tube, and Fittings. 604.2 Copper Tube. 604.3 Hard-Drawn Copper Tubing. 604.4 Flexible Copper Connectors. 604.5 Cast-Iron Fittings. 604.6 Malleable Iron Fittings. 604.7 Previously Used Piping and Tubing. 604.8 Epoxy Coating. 604.9 Plastic Materials. 604.10 Solder. [W] 604.11 Lead Content. 604.12 Flexible Corrugated Connectors. 604.13 Water Heater Connectors. [W] 604.14 Termination of Plastic Pipe. 605.0 Joints and Connections. 605.1 Asbestos-Cement Pipe and Joints. 605.1.1 Mechanical Joints.
75	605.2 Brass Pipe and Joints. 605.2.1 Brazed Joints. 605.2.2 Mechanical Joints. Table 604.1 Materials for Building Supply and Water Distribution Piping and Fittings
76	605.2.3 Threaded Joints. 605.3 Copper Pipe, Tubing, and Joints. 605.3.1 Brazed Joints. 605.3.2 Flared Joints. 605.3.3 Mechanical Joints. 605.3.3.1 Mechanically Formed Tee Fittings. 605.3.3.2 Pressed Fittings. 605.3.3.3 Push Fit Fittings. 605.3.4 Soldered Joints. 605.3.5 Threaded Joints. 605.4 CPVC Plastic Pipe and Joints.
77	605.4.1 Mechanical Joints. 605.4.2 Solvent Cement Joints. 605.4.3 Threaded Joints. 605.5 Ductile Iron Pipe and Joints. 605.5.1 Mechanical Joints. 605.5.2 Push-On Joints. 605.6 Galvanized Steel Pipe and Joints. 605.6.1 Mechanical Joints. 605.6.2 Threaded Joints. 605.7 PE Plastic Pipe/Tubing and Joints. 605.7.1 Heat-Fusion Joints. 605.7.1.1 Butt-Fusion Joints. 605.7.1.2 Electro-Fusion Joints. 605.7.1.3 Socket-Fusion Joints. 605.7.2 Mechanical Joints.
78	605.8 PE-AL-PE Plastic Pipe/Tubing and Joints. 605.8.1 Mechanical Joints. 605.8.1.1 Compression Joints. 605.9 PE-RT. 605.9.1 Fittings. 605.10 PEX Plastic Tubing and Joints. 605.10.1 Fittings. 605.10.2 Mechanical Joints. 605.11 PEX-AL-PEX Plastic Tubing and Joints. 605.11.1 Mechanical Joints. 605.11.1.1 Compression Joints. 605.12 Polypropylene (PP) Piping and Joints. 605.12.1 Heat-Fusion Joints. 605.12.2 Mechanical and Compression Sleeve Joints. 605.12.3 Threaded Joints.
79	605.13 PVC Plastic Pipe and Joints. 605.13.1 Mechanical Joints. 605.13.2 Solvent Cement Joints. 605.13.3 Threaded Joints. 605.14 Stainless Steel Pipe and Joints. 605.14.1 Mechanical Joints. 605.14.2 Welded Joints. 605.15 Slip Joints. 605.16 Dielectric Unions. 605.17 Joints Between Various Materials. 605.17.1 Copper Pipe or Tubing to Threaded Pipe Joints. 605.17.2 Plastic Pipe to Other Materials. 605.17.3 Stainless Steel to Other Materials. 606.0 Valves. 606.1 General. 606.2 Fullway Valve. 606.3 Multidwelling Units.
80	606.4 Multiple Openings. 606.5 Control Valve. 606.6 Accessible. 606.7 Multiple Fixtures. 607.0 Gravity Supply Tanks. 607.1 General. 607.2 Potable Water Tanks. 608.0 Water Pressure, Pressure Regulators, Pressure Relief Valves, and Vacuum Relief Valves 608.1 Inadequate Water Pressure. 608.2 Excessive Water Pressure. 608.3 Expansion Tanks, Combination Pressure, and Temperature Relief Valves. 608.4 Pressure Relief Valves. [W] 608.5 Drains.
81	608.6 Water-Heating Devices. 608.7 Vacuum Relief Valves. 609.0 Installation, Testing, Unions, and Location. 609.1 Installation. 609.2 Trenches. 609.3 Under Concrete Slab. 609.4 Testing. 609.5 Unions. 609.6 Location. 609.7 Abutting Lot. 609.8 Low-Pressure Cutoff Required on Booster Pumps for Water Distribution Systems.
82	609.9 Disinfection of Potable Water System. 609.10 Water Hammer. 609.10.1 Mechanical Devices. 610.0 Size of Potable Water Piping. 610.1 Size. 610.2 Pressure Loss. 610.3 Quantity of Water. [W] 610.4 Parallel Distribution Systems. 610.5 Sizing per Appendices A and C. 610.6 Friction and Pressure Loss. 610.7 Conditions for Using Table 610.4. 610.8 Size of Meter and Building Supply Pipe Using Table 610.4.
83	Table 610.3 Water Supply Fixture Units (WSFU) and Minimum Fixtrue Branch Pipe Sizes
84	Table 610.4 Fixture Unit Table for Determining Water Pipe and Meter Sizes
85	610.9 Size of Branches. 610.10 Sizing for Flushometer Valves. Table 610.10 Flushometer Fixture Units for Water Sizing Using Table 610.3
86	610.11 Sizing Systems for Flushometer Tanks. 610.12 Sizing for Velocity. 610.12.1 Copper Tube Systems. 610.12.2 Tubing Systems Using Copper Alloy Fittings. 610.13 Exceptions. 611.0 Drinking Water Treatment Units. 611.1 Application. 611.2 Air Gap Discharge. 611.3 Connection Tubing. 611.4 Sizing of Residential Softeners. 612.0 Residential Fire Sprinkler Systems. [W] 612.1 General. [W] 613.0 Insulation of Potable Water Piping. Table 611.4 Sizing of Residential Water Softeners
87	Chapter 7 Sanitary Drainage Part I – Drainage Systems. 701.0 Materials. [W] 701.1 Drainage Piping. 701.2 Drainage Fittings. 701.2.1 Screwed Pipe. 701.2.2 Threads. 701.2.3 Type. 701.3 Lead. 701.4 Caulking Ferrules. 701.5 Soldering Bushings. 702.0 Fixture Unit Equivalents. 702.1 Trap Size. 702.2 Intermittent Flow. 702.3 Continuous Flow. TABLES Table 701.4 Caulking Ferrules Table 701.5 Soldering Bushings
88	Table 701.1 Materials for Drain, Waste, Vent Pipe and Fittings
89	Table 702.1 Drainage Fixture Unit Values (DFU)
90	703.0 Size of Drainage Piping. 703.1 Minimum Size. 703.2 Maximum Number of Fixture Units. 703.3 Sizing per Appendix C. 704.0 Fixture Connections (Drainage). 704.1 Inlet Fittings. 704.2 Single Vertical Drainage Pipe. [W] 704.3 Commercial Dishwashing Machines and Sinks. 705.0 Joints and Connections. 705.1 ABS and ABS Co-Extruded Plastic Pipe and Joints. 705.1.1 Mechanical Joints. 705.1.2 Solvent Cement Joints. 705.1.3 Threaded Joints. 705.2 Asbestos-Cement Pipe and Joints. 705.2.1 Mechanical Joints. 705.3 Brass Pipe and Joints. Table 702.2(a) Maximum Drainage Fixture Units for a Trap and Trap Arm Table 702.2(b) Discharge Capacity in Gallons per Minute for Intermittent Flow Only
91	705.3.1 Brazed Joints. 705.3.2 Mechanical Joints. 705.3.3 Threaded Joints. 705.4 Cast-Iron Pipe and Joints. 705.4.1 Caulked Joints. [W] 705.4.2 Mechanical Joints. TABLE 703.2MAXIMUM UNIT LOADING AND MAXIMUM LENGTH OF DRAINAGE AND VENT PIPING
92	705.5 Copper Pipe (DWV) and Joints. 705.5.1 Brazed Joints. 705.5.2 Mechanical Joints. 705.5.3 Soldered Joints. 705.5.4 Threaded Joints. 705.6 Galvanized Steel Pipe and Joints. 705.6.1 Mechanical Joints. 705.6.2 Threaded Joints. 705.7 PVC and PVC Co-Extruded Plastic Pipe and Joining Methods. 705.7.1 Mechanical Joints. 705.7.2 Solvent Cement Joints. 705.7.3 Threaded Joints. 705.8 Stainless Steel Pipe and Joints. 705.8.1 Mechanical Joints.
93	705.8.2 Welded Joints. 705.9 Vitrified Clay Pipe and Joints. 705.9.1 Mechanical Joints. 705.10 Special Joints. 705.10.1 Slip Joints. 705.10.2 Expansion Joints. 705.10.3 Ground Joint, Flared, or Ferrule Connections. 705.10.4 Transition Joint. 705.11 Joints Between Various Materials. 705.11.1 Copper Pipe to Cast-Iron Pipe. 705.11.2 Copper Pipe to Threaded Pipe Joints. 705.11.3 Plastic Pipe to Other Materials. 705.11.4 Stainless Steel Pipe to Other Materials. 706.0 Changes in Direction of Drainage Flow. 706.1 Approved Fittings. 706.2 Horizontal to Vertical. 706.3 Horizontal to Horizontal. 706.4 Vertical to Horizontal. 707.0 Cleanouts. 707.1 Plug.
94	707.2 Approved. 707.3 Gas and Watertight. 707.4 Location. 707.5 Cleaning. 707.6 Extension. 707.7 Interceptor. 707.8 Access. 707.9 Clearance. 707.10 Fittings. 707.11 Pressure Drainage Systems. 707.12 Countersunk Cleanout Plugs. 707.13 Hubless Blind Plugs. 707.14 Trap Arms. 708.0 Grade of Horizontal Drainage Piping. 708.1 General. 709.0 Gravity Drainage Required. 709.1 General. 710.0 Drainage of Fixtures Located Below the Next Upstream Manhole or Below the Main SewerLevel. 710.1 Backflow Protection. Table 707.1 Cleanouts
95	710.2 Sewage Discharge. [W] 710.3 Sewage Ejector and Pumps. 710.4 Discharge Line. 710.5 Size of Building Drains and Sewers. 710.6 Backwater Valves. 710.7 Drainage and Venting Systems. 710.8 Sump and Receiving Tank Construction. 710.9 Alarm. 710.10 Sump and Receiving Tank Covers and Vents. 710.11 Air Tanks. 710.12 Grinder Pump Ejector. 710.12.1 Discharge Piping.
96	710.13 Macerating Toilet Systems. 710.13.1 Sumps. 710.13.2 Discharge Piping. 710.13.3 Venting. 711.0 Suds Relief. 711.1 General. 712.0 Testing. 712.1 Media. 712.2 Water Test. 712.3 Air Test. [W] Part II – Building Sewers.
97	Chapter 8 Indirect Wastes 801.0 Indirect Wastes. 801.1 Air Gap or Air Break Required. 801.2 Food and Beverage Handling Establishments. 801.2.1 Size of Indirect Waste Pipes. 801.2.2 Walk-In Coolers. 801.2.3 Food-Handling Fixtures. 801.3 Bar and Fountain Sink Traps. 801.4 Connections from Water Distribution System. 801.5 Sterilizers. 801.6 Drip or Drainage Outlets. 802.0 Approvals. 802.1 General. 803.0 Indirect Waste Piping. 803.1 General. TABLES
98	804.0 Indirect Waste Receptors. 804.1 Standpipe Receptors. 805.0 Pressure Drainage Connections. 805.1 General. 806.0 Sterile Equipment. 806.1 General. 807.0 Appliances. 807.1 Non-Classed Apparatus. 807.2 Condensate Waste. 807.3 Undiluted Condensate Waste. 807.4 Domestic Dishwashing Machine. 808.0 Cooling Water. 808.1 General. 809.0 Drinking Fountains. 809.1 General. 810.0 Steam and Hot Water Drainage Condensers and Sumps. 810.1 High Temperature Discharge.
99	810.2 Sumps, Condensers, and Intercepting Tanks. 810.3 Cleaning. 810.4 Strainers. 811.0 Chemical Wastes. 811.1 Pretreatment. 811.2 Waste and Vent Pipes. 811.3 Joining Materials. 811.4 Access. 811.5 Permanent Record. 811.6 Chemical Vent. 811.7 Discharge. 811.8 Diluted Chemicals. 812.0 Clear Water Wastes. 812.1 General. 813.0 Swimming Pools. 813.1 General. 813.1.1 Swimming Pool Splash Troughs. Table 810.1 Pipe Connections in Blowoff Condensers and Sumps (inches)
100	814.0 Condensate Wastes and Control. 814.1 Condensate Disposal. 814.2 Size. 814.3 Point of Discharge. Table 814.1 Minimum Condensate Pipe Size
101	Chapter 9 Vents 901.0 General. 901.1 Vents Required. 901.2 Trap Seal Protection. 902.0 Vents Not Required. 902.1 Interceptor. 902.2 Bars, Soda Fountains, and Counter. 903.0 Materials. [W] 903.1 Applicable Standards. 903.2 Use of Copper Tubing. 903.2.1 Underground. 903.2.2 Aboveground. 903.2.3 Prohibited Use. 903.2.4 Marking. 903.3 Changes in Direction. 904.0 Size of Vents. 904.1 Size. 904.2 Length. 905.0 Vent Pipe Grades and Connections. 905.1 Grade.
102	905.2 Horizontal Drainage Pipe. 905.3 Vent Pipe Rise. 905.4 Roof Termination. 905.5 Location of Opening. 905.6 Common Vertical Pipe. 906.0 Vent Termination. 906.1 Roof Termination. 906.2 Clearance. 906.3 Use of Roof. 906.4 Outdoor Installations. 906.5 Joints. 906.6 Lead. 906.7 Frost or Snow Closure. 907.0 Vent Stacks and Relief Vents. 907.1 Drainage Stack. 907.2 Yoke Vent. 908.0 Wet Venting. 908.1 Vertical Wet Venting. 908.1.1 Size. 908.1.2 Vent Connection.
103	[W] 908.2 Horizontal Wet Venting for Bathroom Groups. 908.2.1 Vent Connection. 908.2.2 Size. 909.0 Special Venting for Island Fixtures. 909.1 General. 910.0 Combination Waste and Vent Systems. 910.1 Where Permitted. 910.2 Approval. 910.3 Vents. 910.4 Size. 910.5 Vertical Waste Pipe. 910.6 Cleanouts. 910.7 Fixtures.
104	911.0 Engineered Vent System. 911.1 General. 911.2 Minimum Requirements.
105	Chapter 10 Traps and Interceptors 1001.0 Traps Required. 1001.1 Where Required. 1002.0 Traps Protected by Vent Pipes. 1002.1 Vent Pipes. 1002.2 Fixture Traps. 1002.3 Change of Direction. 1002.4 Vent Pipe Opening. 1003.0 Traps — Described. 1003.1 General Requirements. 1003.2 Slip Joint Fittings. TABLES TABLE 1002.2 Horizontal Lengths of Trap Arms (Except For Water Closets and Similar Fixtures)
106	1003.3 Size. 1004.0 Traps. 1004.1 Prohibited. 1004.2 Movable Parts. 1005.0 Trap Seals. 1005.1 General. 1006.0 Floor Drain Traps. 1006.1 General. 1007.0 Trap Seal Protection. 1007.1 General. 1008.0 Building Traps. 1008.1 General. 1009.0 Industrial Interceptors (Clarifiers) and Separators. 1009.1 Where Required. 1009.2 Approval. 1009.3 Design. 1009.4 Relief Vent. 1009.5 Location. 1009.6 Maintenance of Interceptors. 1009.7 Discharge. 1010.0 Slaughterhouses, Packing Establishments, etc. 1010.1 General. 1011.0 Minimum Requirements for Auto Wash Racks. 1011.1 General.
107	1012.0 Commercial and Industrial Laundries. 1012.1 General. 1013.0 Bottling Establishments. 1013.1 General. 1014.0 Grease Interceptors. 1014.1 Where Required. 1014.1.1 Trapped and Vented. 1014.1.2 Maintenance. [W] 1014.1.3 Food Waste Disposal Units and Dishwashers. 1014.2 Hydromechanical Grease Interceptors. 1014.2.1 Capacity. 1014.2.2 Vent. 1014.3 Gravity Grease Interceptors. 1014.3.1 General. 1014.3.2 Waste Discharge Requirements.
108	1014.3.2.1 Toilets and Urinals. 1014.3.2.2 Inlet Pipe. 1014.3.3 Design. 1014.3.4 Location. 1014.3.4.1 Interceptors. 1014.3.4.2 Business Establishment. 1014.3.4.3 Access. 1014.3.5 Construction Requirements. 1014.3.6 Sizing Criteria. 1014.3.7 Abandoned Gravity Grease Interceptors. Table 1014.2.1 Hydromechanical Grease Interceptor Sizing Using Gravity Flow Rates
109	1015.0 FOG (Fats, Oils, and Greases) Disposal System. 1015.1 Purpose. 1015.2 Scope. 1015.3 Components, Materials, and Equipment. 1015.4 Sizing Application and Installation. 1015.5 Performance. 1016.0 Sand Interceptors. 1016.1 Discharge. 1016.2 Authority Having Jurisdiction. 1016.3 Construction and Size. Table 1014.3.6 Gravity Grease Interceptor Sizing
110	1016.4 Separate Use. 1017.0 Oil and Flammable Liquid Interceptors. 1017.1 Interceptors Required. 1017.2 Design of Interceptors. 1018.0 Parking Garage Drainage Systems.
111	Chapter 11 Storm Drainage 1101.0 General. 1101.1 Where Required. 1101.2 Storm Water Drainage to Sanitary Sewer Prohibited. [W] 1101.3 Material Uses. 1101.4 Expansion Joints Required. 1101.5 Subsoil Drains. 1101.5.1 Discharge. 1101.5.2 Sump. 1101.5.3 Splash Blocks. 1101.5.4 Backflow Protection. 1101.5.5 Open Area. 1101.6 Building Subdrains. 1101.7 Areaway Drains. TABLES
112	1101.8 Window Areaway Drains. 1101.9 Filling Stations and Motor Vehicle Washing Establishments. 1101.10 Paved Areas. 1101.11 Roof Drainage. 1101.11.1 Primary Roof Drainage. 1101.11.2 Secondary Drainage. 1101.11.2.1 Roof Scuppers or Open Side. 1101.11.2.2 Secondary Roof Drain. 1101.11.2.2(A) Separate Piping System. 1101.11.2.2(B) Combined System. [W] 1101.12 Cleanouts. [W] 1101.12.1 Locations. [W] 1101.12.2 Cleaning. [W] 1101.12.3 Access. [W] 1101.12.4 Manholes.
113	1101.13 Rainwater Sumps. 1102.0 Materials. 1102.1 Conductors. 1102.1.1 Inside of Conductors. 1102.2 Leaders. 1102.3 Underground Building Storm Drains. 1102.4 Building Storm Sewers. 1102.5 Subsoil Drains. 1103.0 Traps on Storm Drains and Leaders. 1103.1 Where Required. 1103.2 Where Not Required. 1103.3 Trap Size. 1103.4 Method of Installation of Combined Sewer. 1104.0 Leaders, Conductors, and Connections. 1104.1 Improper Use. 1104.2 Protection of Leaders. 1104.3 Combining Storm with Sanitary Drainage. 1105.0 Roof Drains. 1105.1 Materials. 1105.1.1 Lead. 1105.1.2 Copper. 1105.2 Dome or Strainer for General Use. 1105.3 Strainers for Flat Decks. 1105.4 Roof Drain Flashings. Table 1102.5 Materials for Subsoil Drain Pipe and Fittings
114	1105.4.1 Lead Flashing. 1105.4.2 Copper Flashing. 1106.0 Size of Leaders, Conductors, and Storm Drains. 1106.1 Vertical Conductors and Leaders. 1106.2 Size of Horizontal Storm Drains and Sewers. 1106.3 Size of Roof Gutters. 1106.4 Side Walls Draining onto a Roof. 1107.0 Values for Continuous Flow. 1107.1 General. [W] 1108.0 Control-Flow Roof Drainage. 1109.0 Testing. 1109.1 Testing Required. 1109.2 Methods of Testing Storm Drainage Systems. 1109.2.1 Water Test. 1109.2.2 Air Test. 1109.2.3 Exceptions.
115	Table 1101.7 Sizing of Horizontal Rainwater Piping
116	Table 1101.11 Sizing Roof Drains, Leaders, and Vertical Rainwater Piping
117	Table 1106.3 Size of Gutters
119	Chapter 12 Fuel Gas Piping (Chapter 12 is not adopted) 1201.0 Scope of Gas Piping. 1201.1 Coverage of Piping System. 1201.2 Piping System Requirements. 1201.3 Application. 1202.0 General. 1202.1 Installation. 1203.0 Inspection. 1203.1 Inspection Notification. 1203.2 Excavation. 1203.3 Type of Inspections. 1203.3.1 Rough Piping Inspection. 1203.3.2 Final Piping Inspection. 1203.4 Inspection Waived. TABLES FIGURES
120	1204.0 Certificate of Inspection. 1204.1 Issuance. 1204.2 Gas Supplier. 1204.3 Unlawful. 1205.0 Authority to Render Gas Service. 1205.1 Authorized Personnel. 1205.2 Outlets. 1206.0 Authority to Disconnect. 1206.1 Disconnection. 1206.2 Notice. 1206.3 Capped Outlets. 1207.0 Temporary Use of Gas. 1207.1 General. 1208.0 Gas Piping System Design, Materials, and Components. 1208.1 Installation of Piping System. 1208.1.1 Addition to Existing System. 1208.2 Provision for Location of Point of Delivery. 1208.3 Interconnections Between Gas Piping Systems. 1208.3.1 Interconnections Supplying Separate Users. 1208.3.2 Interconnections for Standby Fuels. 1208.4 Sizing of Gas Piping Systems. 1208.4.1 Maximum Gas Demand.
121	1208.4.2 Sizing Methods. 1208.4.3 Allowable Pressure Drop. 1208.5 Acceptable Piping Materials and Joining Methods. 1208.5.1 Materials. 1208.5.1.1 Other Materials. 1208.5.2 Metallic Pipe. 1208.5.2.1 Cast-Iron. 1208.5.2.2 Steel and Wrought-Iron. 1208.5.2.3 Copper and Brass. 1208.5.2.4 Aluminum Alloy. 1208.5.3 Metallic Tubing. 1208.5.3.1 Steel. Table 1208.4.1 Approximate Gas Input for Typical Appliances
122	1208.5.3.2 Copper and Brass. 1208.5.3.3 Aluminum Alloy. 1208.5.3.4 Corrugated Stainless Steel. 1208.5.4 Plastic Pipe, Tubing, and Fittings. 1208.5.4.1 Regulator Vent Piping. 1208.5.4.2 Anodeless Risers. 1208.5.4.2(A) Factory-Assembled Anodeless Risers. 1208.5.4.2(B) Service Head Adapters and Field-Assembled Anodeless Risers. 1208.5.4.2(C) Undiluted Liquefied Petroleum Gas Piping. 1208.5.5 Workmanship and Defects. 1208.5.6 Protective Coating. 1208.5.7 Metallic Pipe Threads. 1208.5.7.1 Damaged Threads. 1208.5.7.2 Number of Threads. 1208.5.7.3 Thread Joint Compounds. 1208.5.8 Metallic Piping Joints and Fittings. 1208.5.8.1 Pipe Joints. Table 1208.5.7.2 Specifications for Threading Metallic Pipe
123	1208.5.8.2 Tubing Joints. 1208.5.8.3 Flared Joints. 1208.5.8.4 Metallic Pipe Fittings (Including Valves, Strainers, Filters). 1208.5.9 Plastic Piping, Joints, and Fittings. 1208.5.9.1 Joint Design. 1208.5.9.2 Heat-Fusion Joint. 1208.5.9.3 Compression-Type Mechanical Joints. 1208.5.9.4 Liquefied Petroleum Gas Piping Systems. 1208.5.10 Flanges. 1208.5.10.1 Flange Facings. 1208.5.10.2 Lapped Flanges. 1208.5.11 Flange Gaskets.
124	1208.6 Gas Meters. 1208.6.1 Location. 1208.6.1.1 Subject to Damage. 1208.6.1.2 Extreme Temperatures. 1208.6.2 Supports. 1208.6.3 Meter Protection. 1208.6.4 Identification. 1208.7 Gas Pressure Regulators. 1208.7.1 Overpressure Protection. 1208.7.2 Listing. 1208.7.3 Location. 1208.7.4 Regulator Protection. 1208.7.5 Venting. 1208.7.5.1 Line Gas Pressure Regulators. 1208.7.5.2 Venting of Gas Appliance Pressure Regulators.
125	1208.7.5.3 Discharge of Vents. 1208.7.6 Bypass Piping. 1208.7.7 Identification. 1208.8 Backpressure Protection. 1208.8.1 Protective Devices. 1208.9 Low-Pressure Protection. 1208.10 Shutoff Valves. 1208.11 Expansion and Flexibility. 1208.11.1 Special Local Conditions. 1209.0 Excess Flow Valve. 1209.1 General. 1210.0 Gas Piping Installation. 1210.1 Piping Underground. 1210.1.1 Cover Requirements. 1210.1.2 Trenches. 1210.1.2.1 Backfilling.
126	1210.1.3 Protection Against Corrosion. 1210.1.4 Protection Against Freezing. 1210.1.5 Piping Through Foundation Wall. 1210.1.6 Piping Underground Beneath Buildings. 1210.1.6.1 Conduit with One End Terminating Outdoors. 1210.1.6.2 Conduit with Both Ends Terminating Indoors. 1210.1.7 Plastic Piping. 1210.1.7.1 Connections Between Metallic and Plastic Piping. 1210.1.7.2 Tracer Wire. 1210.2 Installation of Piping. 1210.2.1 Building Structure. 1210.2.2 Gas Piping to be Sloped. 1210.2.2.1 Ceiling Locations. 1210.2.3 Prohibited Locations.
127	1210.2.4 Hangers, Supports, and Anchors. 1210.2.4.1 Spacing. 1210.2.4.2 Expansion and Contraction. 1210.2.5 Removal of Piping. 1210.3 Concealed Piping in Buildings. 1210.3.1 Connections. 1210.3.2 Piping in Partitions. 1210.3.3 Tubing in Partitions. 1210.3.4 Piping in Floors. 1210.4 Piping in Vertical Chases. 1210.4.1 Pressure Reduction. Table 1210.2.4.1 Support of Piping
128	1210.4.2 Construction. 1210.4.3 Ventilation. 1210.5 Maximum Design Operating Pressure. 1210.5.1 Liquefied Petroleum Gas Systems. 1210.6 Appliance Overpressure Protection. 1210.7 Gas Pipe Turns. 1210.7.1 Metallic Pipe. 1210.7.2 Plastic Pipe. 1210.7.3 Elbows. 1210.8 Drips and Sediment Traps. 1210.8.1 Provide Drips Where Necessary. 1210.8.2 Location of Drips. 1210.8.3 Sediment Traps.
129	1210.9 Outlets. 1210.9.1 Cap Outlets. 1210.9.1.1 Appliance Shutoff Valves. 1210.10 Branch Pipe Connection. 1210.11 Manual Gas Shutoff Valves. 1210.11.1 Valves Controlling Multiple Systems. 1210.11.1.1 Shutoff Valves for Multiple House Lines. 1210.11.2 Emergency Shutoff Valves. 1210.11.3 Shutoff Valve for Laboratories. 1210.12 Prohibited Devices. 1210.13 Systems Containing Gas-Air Mixtures Outside the Flammable Range. 1210.14 Systems Containing Flammable Gas-Air Mixtures. 1210.15 Electrical Bonding and Grounding. 1210.15.1 Pipe and Tubing other than CSST. 1210.15.2 Bonding of CSST Gas Piping.
130	1210.15.3 Grounding Conductor or Electrode. 1210.15.4 Lightning Protection System. 1210.16 Electrical Circuits. 1210.17 Electrical Connections. 1210.17.1 Safety Control. 1211.0 Appliance Connections to Building Piping. 1211.1 Connecting Gas Appliances. 1211.2 Suspended Low-Intensity Infrared Tube Heaters. 1211.3 Use of Nonmetallic Gas Hose Connectors. 1211.3.1 Indoor. 1211.3.2 Outdoor. 1211.4 Connection of Portable and Mobile Industrial Gas Appliances. 1211.4.1 Flexible Hose. 1211.4.2 Swivel Joints or Couplings.
131	1211.4.3 Metal Flexible Connectors. 1211.4.4 Flexible Connectors. 1211.5 Appliance Shutoff Valves and Connections. 1211.6 Quick-Disconnect Devices. 1211.7 Gas Convenience Outlets. 1211.8 Sediment Trap. 1211.9 Installation of Piping. 1212.0 Liquefied Petroleum Gas Facilities and Piping. 1212.1 General. 1213.0 Pressure Testing and Inspection. 1213.1 Piping Installations. 1213.1.1 Inspection Requirements. 1213.1.2 Repairs and Additions. 1213.1.3 New Branches. Figure 1211.8 Method of Installing a Tee Fitting Sediment Trap
132	1213.1.4 Piping System. 1213.1.5 Regulators and Valves. 1213.1.6 Test Medium. 1213.2 Test Preparation. 1213.2.1 Pipe Joints. 1213.2.2 Expansion Joints. 1213.2.3 Appliances and Equipment. 1213.2.4 Designed for (less than) Operating Pressures. 1213.2.5 Designed for (equal to or more than)Operating Pressures. 1213.2.6 Safety. 1213.3 Test Pressure. 1213.4 Detection of Leaks and Defects. 1213.4.1 Detecting Leaks. 1213.4.2 Repair or Replace. 1213.5 Piping System Leak Test. 1213.5.1 Turning Gas On. 1213.5.2 Leak Check. 1213.5.3 Placing Appliances and Equipment in Operation. 1213.6 Purging Requirements.
133	1213.6.1 Piping Systems Required to be Purged Outdoors. 1213.6.1.1 Removal from Service. 1213.6.1.2 Placing in Operation. 1213.6.1.3 Outdoor Discharge of Purged Gases. 1213.6.1.4 Combustible Gas Indicator. 1213.6.2 Piping Systems Allowed to be Purged Indoors or Outdoors. 1213.6.2.1 Purging Procedure. 1213.6.2.2 Combustible Gas Detector. 1213.6.3 Purging Appliances and Equipment. Table 1213.6.1 Size and Length of Piping
134	1214.0 Interconnections Between Gas Piping Systems. 1214.1 Interconnections Supplying Separate Users. 1214.2 Interconnections for Standby Fuels. 1215.0 Required Gas Supply. 1215.1 General. 1215.2 Volume. 1215.3 Gas Appliances. 1215.4 Size of Piping Outlets. 1216.0 Required Gas Piping Size. 1216.1 Pipe Sizing Methods. 1216.1.1 Longest Length Method. 1216.1.2 Branch Length Method. 1216.1.3 Hybrid Pressure. 1216.2 Tables for Sizing Gas Piping Systems. 1216.3 Sizing Equations.
135	1216.4 Sizing of Piping Sections. 1216.5 Engineering Methods. 1216.6 Variable Gas Pressure. Table 1216.3 Cr and Y for Natural Gas and Undiluted Propane at Standard Conditions
136	Figure 1216.1.1 Example Illustrating Use of Tables 1208.4.1 and 1216.2(1)
137	Table 1216.2(1) Schedule 40 Metallic Pipe
138	Table 1216.2(2) Schedule 40 Metallic Pipe
139	Table 1216.2(3) Schedule 40 Metallic Pipe
140	Table 1216.2(4) Schedule 40 Metallic Pipe
141	Table 1216.2(5) Schedule 40 Metallic Pipe
142	Table 1216.2(6) Schedule 40 Metallic Pipe
143	Table 1216.2(7) Semi-Rigid Copper Tubing
144	Table 1216.2(8) Semi-Rigid Copper Tubing
145	Table 1216.2(9) Semi-Rigid Copper Tubing
146	Table 1216.2(10) Semi-Rigid Copper Tubing
147	Table 1216.2(11) Semi-Rigid Copper Tubing
148	Table 1216.2(12) Semi-Rigid Copper Tubing
149	Table 1216.2(13) Semi-Rigid Copper Tubing
150	Table 1216.2(14) Corrugated Stainless Steel Tubing (CSST)
151	Table 1216.2(15) Corrugated Stainless Steel Tubing (CSST)
152	Table 1216.2(16) Corrugated Stainless Steel Tubing (CSST)
153	Table 1216.2(17) Corrugated Stainless Steel Tubing (CSST)
154	Table 1216.2(18) Corrugated Stainless Steel Tubing (CSST)
155	Table 1216.2(19) Polyethylene Plastic Pipe
156	Table 1216.2(20) Polyethylene Plastic Pipe
157	Table 1216.2(21) Polyethylene Plastic Pipe
158	Table 1216.2(22) Polyethylene Plastic Tubing Table 1216.2(23) Polyethylene Plastic Tubing
159	Table 1216.2(24) Schedule 40 Metallic Pipe
160	Table 1216.2(25) Schedule 40 Metallic Pipe
161	Table 1216.2(26) Schedule 40 Metallic Pipe
162	Table 1216.2(27) Schedule 40 Metallic Pipe
163	Table 1216.2(28) Semi-Rigid Copper Tubing
164	Table 1216.2(29) Semi-Rigid Copper Tubing
165	Table 1216.2(30) Semi-Rigid Copper Tubing
166	Table 1216.2(31) Corrugated Stainless Steel Tubing (CSST)
167	Table 1216.2(32) Corrugated Stainless Steel Tubing (CSST)
168	Table 1216.2(33) Corrugated Stainless Steel Tubing (CSST)
169	Table 1216.2(34) Polyethylene Plastic Pipe
170	Table 1216.2(35) Polyethylene Plastic Pipe
171	Table 1216.2(36) Polyethylene Plastic Tubing
173	Chapter 13 Health Care Facilities and Medical Gas and Vacuum Systems Part I – Special Requirements forHealth Care Facilities. 1301.0 Application. 1301.1 Where Required. 1301.2 Health Care Facilities. 1301.3 Breathing Air Replenishment (BAR)System. 1302.0 Medical Gas and Vacuum Piping Systems –Installation Requirements. 1302.1 General. 1302.2 Manufacturer’s Instructions. 1302.3 Installation. 1302.4 Brazing. 1302.5 Documentation. 1303.0 Protrusions from Walls. 1303.1 Drinking Fountain Control Valves. 1303.2 Exposed Piping. 1304.0 Psychiatric Patient Rooms. 1304.1 General. 1305.0 Locations for Ice Storage. 1305.1 General. 1306.0 Sterilizers. 1306.1 General. 1306.2 Indirect Waste Connections. 1307.0 Vapor Vents and Stacks for Sterilizers. 1307.1 General. TABLES
174	1308.0 Aspirators. 1308.1 General. Part II – Medical Gas and Vacuum Systems. 1309.0 Application. [W] 1309.1 General. [W] 1309.2 Purpose. 1309.3 Terms. 1309.4 Portable Compressed Gas Systems. 1309.5 Where Not Applicable. 1309.6 Requirements. 1309.7 Existing Systems. 1310.0 General Requirements. 1310.1 Oxygen Compatibility. 1310.1.1 Components. 1310.1.2 Materials. 1310.2 Certification. 1310.3 Documentation.
175	1310.3.1 Delivery. 1310.4 Supply Source. 1310.5 Health Care Organization Personnel. 1310.6 Brazing Procedures. 1310.6.1 Examination. 1310.6.2 Brazing Procedure Specification(BPS). 1310.6.3 Documentation. 1310.6.4 Procedures. 1310.6.5 Conditions of Acceptance. 1310.6.6 Qualifications. 1311.0 Plan Review. 1311.1 Plans and Specifications. 1311.2 Requirements. 1311.3 Extent of Work. 1311.4 Record. 1312.0 System Performance. 1312.1 Required Operating Pressures. 1312.2 Minimum Flow Rates.
176	1312.3 Minimum Station Outlets/Inlets. 1313.0 Required Pipe Sizing. 1313.1 Maximum Demand. Table 1312.1 Standard Designation Colors and Operating Pressures for Gas and Vacuum Systems Table 1312.2 Minimum Flow Rates (cubic feet per minute)
177	1313.2 Sizing Procedures. 1313.3 Engineering Methods. 1314.0 Workmanship. 1314.1 Accepted Engineering Practices. 1314.2 Imperfections. 1314.3 Burred Ends. 1315.0 Materials. 1315.1 General. 1315.2 Cleaning. Table 1312.3 Minimum Outlets/Inlets per Station
178	1315.3 Delivery. 1315.4 Tubes. Table 1313.1 System Sizing – Flow Requirements for Station Inlet/Outlet Table 1313.2 Size of Gas/Vacuum Piping
179	1315.5 Changes in Direction. 1315.5.1 Cast-Copper Alloy Fittings. 1315.5.2 Branch Connections. 1315.6 Special Fittings. 1315.7 Prohibited Joints. 1315.7.1 Threaded Joints. 1315.8 Shutoff Valves. 1315.9 Soldered Joints. 1316.0 Cleaning for Medical Gas Piping Systems. 1316.1 Cleaning. 1316.2 Contaminated Materials.
180	1317.0 Installation of Piping. 1317.1 Pipe Protection. 1317.2 Location. 1317.3 Frost Protection. 1317.4 Underground Piping. 1317.5 Connectors. 1317.6 Positive-Pressure Medical Gas Piping Distribution Systems. 1317.7 Support. 1317.8 Seismic Provisions. 1317.9 Testing.
181	1317.10 Labeled. 1318.0 Joints. 1318.1 General. 1318.2 Brazed Joints. 1318.3 Tube Ends. 1318.4 Cleaning Procedures. Table 1317.7 Maximum Pipe Support Spacing
182	1318.5 Flux. 1318.6 Heat and Brazing. 1318.7 Purge Gas. 1318.8 Prohibited Joints.
183	1319.0 Valves – Requirements, Locations, andLabeling. 1319.1 General Requirements. 1319.1.1 Enclosures. 1319.2 In-Line Shutoff Valves. 1319.3 Future Piping. 1319.3.1 Labeled. 1319.3.2 Downstream Piping. 1319.3.3 zone Valve. 1319.3.4 Special Installations. 1319.3.5 Arrangement. 1319.4 Source Valves. 1319.4.1 Location. 1319.4.2 Labeled. 1319.5 Main Valves. 1319.5.1 Access. 1319.5.2 Location. 1319.5.3 Labeled.
184	1319.6 Riser Valves. 1319.7 Zone Valves. 1319.7.1 Readily Operable. 1319.7.2 Arrangement. 1319.8 Service Valves. 1319.8.1 Branch Piping. 1319.8.2 Servicing. 1320.0 Pressure-Regulating Equipment. 1320.1 Where Required. 1320.2 Pressure-Relief Valves. 1320.2.1 Excess Pressure. 1320.2.2 Venting. 1320.2.3 Design. 1320.2.4 Isolation. 1320.3 Pressure Gauges. 1321.0 Station Outlets/Inlets. 1321.1 General. 1321.2 Post Installation. [W] 1321.3 Minimum Station Outlets/Inlets. 1322.0 Labeling and Identification. 1322.1 General. 1322.2 Pipe Labeling.
185	1322.3 Shutoff Valve Identification. 1322.4 Station Outlet/Inlet Identification. 1322.5 Shutoff Valve Labeling. 1323.0 Alarms. 1323.1 General. 1323.2 Components.
186	1324.0 Medical Air System. 1324.1 General. 1324.2 Medical Air Compressors. 1324.3 Air Source. 1324.4 Air Intakes. 1324.4.1 Isolation Valve. 1324.5 Drains. 1324.6 Medical Air Receivers. 1324.7 Requirements for Medical Air Receivers.
187	1325.0 Medical Vacuum Pump System. 1325.1 General. 1325.2 Medical-Surgical Vacuum Sources. 1325.2.1 Pumps. 1325.3 Exhausts. 1325.3.1 Multiple Pumps. 1325.4 Receivers. 1325.5 Piping. 1325.6 Drains. 1326.0 Testing and Inspection. 1326.1 Where Required. 1326.1.1 Requirements.
188	1326.2 Systems. 1326.2.1 Breached. 1326.3 Advance Notice. 1326.4 Responsibility. 1326.5 Testing. 1326.6 Retesting. 1326.7 Initial Pressure Test – Piped Gas Systems. 1326.8 Cross-Connection Test – Piped Gas Systems. 1326.8.1 Source of Test Gas. 1326.8.2 Cross-Connection Testing. 1326.8.3 Medical-Surgical Vacuum Systems. 1326.9 Standing Pressure Test – Piped Gas Systems.
189	1326.9.1 Requirements. 1326.10 Initial Pressure Test – Piped Vacuum Systems. 1326.11 Standing Pressure Test – Piped Vacuum Systems. 1326.12 Corrections. 1326.13 Approval. 1326.14 Covering or Use. 1326.15 Uncovering.
190	1327.0 System Verification. [W] 1327.1 Verification. [W] 1327.1.1 Verification Tests. 1327.2 Certification Tests. 1327.3 Reports. 1327.4 Report Items.
191	Chapter 14 Referenced Standards 1401.0 General. 1401.1 Standards. TABLE Table 1401.1 Referenced Standards
213	Abbreviations in Table 1401.1
215	Chapter 15 Firestop Protection (Chapter 15 is not adopted) 1501.0 General. 1501.1 Applicability. 1502.0 Plans and Specifications. 1502.1 Penetrations. 1503.0 Installation. 1503.1 Materials. 1504.0 Combustible Piping Installations. 1504.1 General Requirements. 1504.2 Fire-Resistance Rating. 1504.3 Firestop Systems. 1504.4 Connections. 1504.5 Insulation and Coverings. 1504.6 Sleeves. 1505.0 Noncombustible Piping Installations. 1505.1 General Requirements. 1505.2 Fire-Resistance Rating. 1505.3 Firestop Systems.
216	1505.4 Connections. 1505.5 Unshielded Couplings. 1505.6 Sleeves. 1505.7 Insulation and Coverings. 1506.0 Required Inspection. 1506.1 General. 1506.2 Examination. 1506.3 Penetrations. 1506.4 Field Installations.
217	Chapter 16 Alternate Water Sources for Nonpotable Applications 1601.0 General. 1601.1 Applicability. [W] 1601.1.1 Allowable Use of Alternate Water. [W] 1601.2 System Design. [W] 1601.3 Permit. 1601.4 Component Identification. 1601.5 Maintenance and Inspection. 1601.5.1 Frequency. [W] 1601.5.2 Maintenance Log. 1601.5.3 Maintenance Responsibility. 1601.6 Operation and Maintenance Manual. 1601.7 Minimum Water Quality Requirements. 1601.8 Material Compatibility. 1601.9 System Controls. [W] 1601.10 Abandonment. [W] 1602.0 Gray Water Systems, is not adopted. 1603.0 Reclaimed (Recycled) Water Systems. 1603.1 General. TABLE FIGURE
218	1603.2 Permit. 1603.2.1 Plumbing Plan Submission. 1603.3 System Changes. [W] 1603.4 Connection to Potable or Reclaimed(Recycled) Water Systems. 1603.5 Initial Cross-Connection Test. 1603.6 Reclaimed (Recycled) Water System Materials. 1603.7 Reclaimed (Recycled) Water System Color and Marking Information. 1603.8 Valves. 1603.9 Installation. 1603.9.1 Hose Bibbs. Table 1601.5 Minimum Alternate Water Source Testing, Inspection, and Maintenance Frequency
219	1603.9.2 Required Appurtenances. 1603.9.3 Same Trench as Potable Water Pipes. 1603.10 Signs. 1603.10.1 Commercial, Industrial, and Institutional Restroom Signs. 1603.10.2 Equipment Room Signs. 1603.11 Inspection and Testing. 1603.11.1 Supply System Inspection and Test. 1603.11.2 Annual Cross-Connection Inspection and Testing. 1603.11.2.1 Visual System Inspection. 1603.11.2.2 Cross-Connection Test. Figure 1603.9
220	[W] 1603.11.2.3 Discovery of Cross-Connection. 1603.11.2.4 Annual Inspection. 1603.12 Sizing. 1604.0 On-Site Treated Nonpotable Water Systems. [W] 1604.1 General. 1604.2 Plumbing Plan Submission. 1604.3 System Changes. 1604.4 Connections to Potable or Reclaimed(Recycled) Water Systems. 1604.5 Initial Cross-Connection Test.
221	1604.6 On-Site Treated Nonpotable Water System Materials. 1604.7 On-Site Treated Nonpotable Water Devices and Systems. 1604.8 On-Site Treated Nonpotable Water System Color and Marking Information. 1604.9 Valves. 1604.10 Design and Installation. 1604.10.1 Listing Terms and Installation Instructions. 1604.10.2 Minimum Water Quality. 1604.10.3 Deactivation and Drainage. 1604.10.4 Near Underground Potable WaterPipe. 1604.10.5 Required Filters. 1604.11 Signs. 1604.11.1 Commercial, Industrial, and Institutional Restroom Signs. 1604.11.2 Equipment Room Signs. 1604.12 Inspection and Testing. 1604.12.1 Supply System Inspection and Test. 1604.12.2 Annual Cross-Connection Inspection and Testing. 1604.12.2.1 Visual System Inspection.
222	1604.12.2.2 Cross-Connection Test. [W] 1604.12.2.3 Discovery of Cross-Connection. 1604.12.2.4 Annual Inspection. 1604.13 Sizing.
223	Chapter 17 Nonpotable Rainwater Catchment Systems 1701.0 General. 1701.1 Applicability. 1702.0 Nonpotable Rainwater Catchment Systems. [W] 1702.1 General. [W] 1702.2 Permit. [W] 1702.2.1 Plumbing Plan Submission. [W] 1702.2.2 Discovery of Cross Connection. 1702.3 System Changes. 1702.4 Connections to Potable or Reclaimed (Recycled) Water Systems. 1702.5 Initial Cross-Connection Test. 1702.6 Sizing. 1702.7 Rainwater Catchment System Materials. 1702.7.1 Water Supply and Distribution Materials. FIGURE
224	1702.7.2 Rainwater Catchment System Drainage Materials. 1702.7.3 Storage Tanks. 1702.7.4 Collections Surfaces. 1702.8 Rainwater Catchment System Color and Marking Information. 1702.9 Design and Installation. 1702.9.1 Outside Hose Bibbs. 1702.9.2 Deactivation and Drainage for Cross-Connection Test. 1702.9.3 Collection Surfaces. 1702.9.3.1 Prohibited Discharges. 1702.9.4 Minimum Water Quality. 1702.9.5 Rainwater Storage Tanks. 1702.9.5.1 Construction. 1702.9.5.2 Location. 1702.9.5.3 Above Grade. 1702.9.5.4 Below Grade. 1702.9.5.5 Drainage and Overflow. Figure 1702.9
225	1702.9.5.5(A) Overflow Outlet Size. 1702.9.5.6 Opening and Access Protection. 1702.9.5.6(A) Animals and Insects. 1702.9.5.6(B) Human Access. 1702.9.5.7 Marking. 1702.9.6 Pumps. 1702.9.7 Roof Drains. 1702.9.8 Water Quality Devices and Equipment. 1702.9.9 Freeze Protection. 1702.9.10 Debris Removal. 1702.9.11 Required Filters. 1702.9.12 Roof Gutters. 1702.10 Signs. 1702.10.1 Commercial, Industrial, and Institutional Restroom Signs. 1702.10.2 Equipment Room Signs. 1702.11 Inspection and Testing. 1702.11.1 Supply System Inspection and Test. 1702.11.2 Annual Cross-Connection Inspection and Testing. 1702.11.2.1 Visual System Inspection. 1702.11.2.2 Cross-Connection Test.
226	1702.11.2.3 Discovery of Cross-Connection. 1702.11.2.4 Annual Inspection. [W] 1702.12 Abandonment.
227	Appendices Table of Contents
229	Appendix A Recommended Rules for Sizing the Water Supply System A 1.0 Preliminary Information. A 1.1 Daily Service Pressure. A 1.2 Water Meter. A 1.3 Local Information. A 2.0 Demand Load. A 2.1 Supply Demand. A 2.2 Continuous Supply Demand. A 3.0 Permissible Friction Loss. A 3.1 Residual Pressure. TABLES CHARTS Chart A 1.2 Friction Losses for Disk-Type Water Meters
230	A 3.2 Elevation. A 3.3 Available Pressure. A 3.4 Developed Length. A 4.0 Size of Building Supply. A 4.1 Diameter. A 4.2 Copper and Brass Piping. A 4.3 Hard Water. A 5.0 Size of Principal Branches and Risers. A 5.1 Size. A 5.2 Branches. A 5.3 Water Closets. A 6.0 General. A 6.1 Velocities. A 6.2 Pressure-Reducing Valves. A 6.3 Fittings.
231	Table A 2.1 Water Supply Fixture Units (WSFU) and Minimum Fixture Branch Pipe Size
232	Chart A 2.1 Estimate Curves for Demand Load Chart A 2.1(1) Enlarged Scale Demand Load
233	Table A 3.4 Allowance in Equivalent Length of Pipe for Friction Loss in Valves and Threaded Fittings Equivalent Length of Pipe for Various Fittings
234	Chart A 4.1
235	Chart A 4.1(1)
236	Chart A 4.1(2)
237	Chart A 4.1(3)
238	A 7.0 Sizing. A 7.1 Example.
239	Appendix B Explanatory Notes on Combination Waste and Vent Systems B 1.0 General Requirements. B 2.0 Caution. B 3.0 Pneumatics. B 4.0 Trap Sizes. B 5.0 Layout Drawings. B 5.1 Example of Sizing.
241	Appendix C Alternate Plumbing Systems C 1.0 General. C 1.1 Applicability. C 1.2 Provisions. C 1.3 Authority Having Jurisdiction. C 1.4 Standards and Specifications. C 1.5 Alternate Materials and Equipment. C 2.0 Engineered Plumbing Systems. C 2.1 Definition. C 2.2 Inspection and Installation. C 2.3 Owner Information. C 3.0 Water Heat Exchangers. C 3.1 Protection from Contamination. C 3.2 Single-Wall Heat Exchangers. C 3.3 Alternate Designs. C 4.0 Fixture Unit Values for Private or Private Use Bathroom Groups. C 4.1 Fixtures. C 4.2 Water Supply Fixture Unit Values. C 4.3 Drainage Fixture Unit Values. C 5.0 Drainage System Sizing. C 5.1 Definition. TABLES
242	C 5.2 Drainage Fixture Units. C 5.3 Size of Building Drain and Building Sewer. C 5.4 Size of Horizontal Branch or Vertical Stack. C 5.4.1 Horizontal Stack Offsets. C 5.4.2 Vertical Stack Offsets. C 5.5 Horizontal Stack Offset and Horizontal Branch Connections. C 6.0 Vent System Sizing. C 6.1 Size of Vents. TABLE C 4.1 Water Supply Fixture Units (WSFU) for Bathroom Groups
243	C 6.2 Vent Stack. C 6.3 Branch Vents. C 6.4 Venting Horizontal Offsets. C 6.4.1 Venting Upper Section. C 6.4.2 Venting Lower Section. Table C 4.1(1) Drainage Fixture Unit Values (DFU) for Bathroom Groups
244	C 7.0 Vacuum Drainage Systems. C 7.1 General. Table C 5.3 Building Drains and Building Sewers Table C 5.4 Horizontal Fixture Branches and Stacks
245	C 7.2 System Design. C 7.2.1 Vacuum Generating System. C 7.2.2 Waste Collection Center or Storage Tanks. C 7.2.3 Piping Network. Table C 6.1 Size and Length of Vents
246	C 7.2.4 Vacuum Interface Valve. C 7.2.5 Control Components. C 7.3 Fixtures. C 7.4 Drainage Fixture Units. C 7.5 Water Supply Fixture Units. C 7.6 Materials. C 7.7 Traps and Cleanouts. C 7.8 Testing. C 7.9 Manufacturer’s Instructions. C 8.0 Circuit Venting. C 8.1 Circuit Vent Permitted. C 8.1.1 Multiple Circuit-Vented Branches. C 8.2 Vent Size and Connection. C 8.3 Slope and Size of Horizontal Branch. C 8.3.1 Size of Multiple Circuit Vent. C 8.4 Relief Vent.
247	C 8.4.1 Connection and Installation. C 8.4.2 Fixture Drain or Branch. C 8.5 Additional Fixtures. C 9.0 Single-Stack Vent System. C 9.1 Where Permitted. C 9.2 Stack Size. C 9.2.1 Stack Vent. C 9.3 Branch Size. C 9.4 Length of Horizontal Branches. C 9.4.1 Water Closets. C 9.4.2 Other Fixtures. C 9.4.3 Length of Vertical Piping. C 9.5 Maximum Vertical Drops from Fixtures. C 9.6 Additional Venting Required. C 9.7 Stack Offsets. C 9.8 Separate Stack Required. C 9.9 Sizing Building Drains and Sewers.
248	Table C 9.2 Single Stack Size
249	Appendix D Sizing Storm Water Drainage Systems D 1.0 Roof Drainage. D 1.1 General. D 2.0 Sizing by Flow Rate. D 2.1 General. D 3.0 Sizing by Roof Area. D 3.1 General. D 4.0 Capacity of Rectangular Scuppers. D 4.1 General. TABLES Table D 1.1 Maximum Rates of Rainfall for Various Cities
255	Table D 4.1 Discharge from Rectangular Scuppers (gallons per minute)
257	Appendix E Manufactured/Mobile Home Parks and Recreational Vehicle Parks Part A Manufactured/Mobile Home (M/H) Park. E 1.0 General. E 1.1 Applicability. E 2.0 Definitions. E 3.0 Plans and Specifications. E 3.1 General Requirements. Part B Manufactured/Mobile Home Park Drainage System Construction. E 4.0 Drainage Systems. E 4.1 General. E 5.0 Materials. E 5.1 General. E 6.0 Drainage (Sewage) Lines. E 6.1 General. E 7.0 M/H Lot Drainage Inlet and Lateral. E 7.1 Size. E 7.2 Lateral Line. E 7.3 Materials. E 7.4 Inlet. TABLES
258	E 8.0 Location of Lot Drain Inlet. E 8.1 General. E 9.0 Pipe Size. E 9.1 Inlet, System, and Lateral Sizing. E 9.2 Engineered Design. E 10.0 M/H Drain Connector. E 10.1 General. E 10.2 Grade and Gastightness. Part C M/H Park Water Supply. E 11.0 Potable Water Supply. E 11.1 General. E 12.0 Lot Service Outlet Size. E 12.1 General. E 13.0 Location of Water Service. E 13.1 General. E 14.0 Pressure. E 14.1 General. E 15.0 Water Distribution Piping. E 15.1 General. E 16.0 Shutoff Valve. E 16.1 General. Table E 6.1 Drainage Pipe Diameter and Number of Fixture Units on Drainage System Table E 6.1(1) Minimum Grade and Slope of Drainage Pipe
259	E 17.0 Backflow Preventer. E 17.1 General. E 18.0 Pressure-Relief Valve. E 18.1 General. E 19.0 Mechanical Protection. E 19.1 General. E 20.0 M/H Water Connector. E 20.1 General. E 21.0 Water-Conditioning Equipment. E 21.1 Permit Required. E 21.2 Approval. E 21.3 Installation. E 22.0 Testing. E 22.1 General. Part D Fuel Supply. E 23.0 Fuel Gas Piping Systems. E 23.1 General. E 23.2 Gas Supply Connections. E 23.3 Location of Gas Supply Connection. E 24.0 Single and Multiple Manufactured Home Site Fuel Supply Systems. E 24.1 Gas Supply Connections – Underground Gas Piping. E 24.1.1 Underground Installations. E 24.1.1.1 Open-Ended Gastight Conduit. E 24.1.1.2 Requirements.
260	E 25.0 Manufactured Home Site Gas Shutoff Valve. E 25.1 General. E 26.0 Gas Meters. E 26.1 Support of Meters. E 26.2 Location of Meters. E 26.3 Meter Shutoff Valve or Cock. E 27.0 Multiple Manufactured Home Site Fuel Distribution and Supply Systems. E 28.0 Cathodic Protection Requirements. E 28.1 General. E 29.0 Manufactured Home Community LPG Supply Systems. E 29.1 General. E 30.0 Required Gas Supply. E 30.1 General. E 31.0 Gas Pipe Sizing and Pressure. E 31.1 Size. E 31.2 Pressure. E 32.0 Gas Piping Materials. E 32.1 Metal.
261	E 32.2 Protection Coatings for Metal Gas Piping. E 32.3 Plastic. E 33.0 Gas Piping Installations. E 33.1 Minimum Burial Below Ground Level and Clearances. E 33.2 Metallic Gas Piping. E 33.2.1 Cathodic Protection. E 33.2.2 Underground Metallic Systems. E 33.3 Plastic Gas Piping. E 33.4 Gas Piping System Shutoff Valve. E 34.0 Liquefied Petroleum Gas Equipment. E 34.1 General. E 35.0 Oil Supply. E 35.1 General. E 35.2 Minimum Oil Supply Tank Size. Table E 30.1 Demand Factors for Use in Calculating Gas Piping Systems in M/H Communities
262	E 35.3 Oil Supply Connections. E 36.0 Fuel Supply Systems Installation. E 36.1 Flexible Gas Connector. E 36.2 Use of Approved Pipe and Fittings of Extension. E 36.3 Mechanical Protection. E 36.4 Special Rules on Atmospherically Controlled Regulators. E 36.5 Fuel Gas Piping Test. E 36.5.1 Procedures. E 36.5.2 Warning.
263	E 36.5.3 Vents. E 36.6 Oil Tanks. E 36.6.1 Installation. E 36.6.2 Capacity. E 36.6.3 Location. E 36.6.4 Vent. E 36.6.5 Liquid Level. E 36.6.6 Fill Opening. E 37.0 Manufactured Home Accessory Building Fuel Supply Systems. E 37.1 General. E 38.0 Community Building Fuel Supply Systems in Manufactured Home Communities. E 38.1 Fuel Gas Piping and Equipment Installations. E 38.2 Oil Supply Systems in M/H Communities. E 38.3 Oil-Burning Equipment and Installation. E 38.4 Inspections and Tests. Part E Recreational Vehicle Parks. E 39.0 Plumbing Systems. E 39.1 General. E 40.0 Definitions.
264	Part F Recreational Vehicle Park Toilet and Shower Facilities. E 41.0 Water Closets and Urinals. E 41.1 General. E 42.0 Markings. E 42.1 General. E 43.0 Number of Water Closets. E 43.1 General. E 44.0 Interior Finish. E 44.1 General. E 45.0 Floors and Drains. E 45.1 General. E 46.0 Lavatories. E 46.1 General. E 47.0 Urinals. E 47.1 General. E 48.0 Approved Water Closets. E 48.1 General. E 49.0 Water Closet Compartment. E 49.1 General. E 50.0 Compartment Size. E 50.1 General. E 51.0 Receptacle. E 51.1 General. E 52.0 Shower Size. E 52.1 General. E 53.0 Drainage System Connection. E 53.1 General.
265	E 54.0 Ceiling Height and Doors. E 54.1 General. E 55.0 Ventilation. E 55.1 General. Part G Recreational Vehicle Park Potable Water Supply and Distribution. E 56.0 Quality. E 56.1 General. E 57.0 Sources. E 57.1 General. E 58.0 Prohibited Connections. E 58.1 General. E 59.0 Supply. E 59.1 General. E 60.0 Pressure and Volume. E 60.1 General. E 61.0 Outlets. E 61.1 General. E 62.0 Storage Tanks. E 62.1 General. Part H Recreational Vehicle Park Water Connections for Individual Recreational Vehicles. E 63.0 Location. E 63.1 General. E 64.0 Water Riser Pipe. E 64.1 General. E 65.0 Drinking Fountains. E 65.1 General.
266	Part I Recreational Vehicle Park Drainage System. E 66.0 Where Required. E 66.1 General. E 67.0 Materials. E 67.1 General. E 68.0 Pipe Sizes. E 68.1 General. E 69.0 Sewer Lines. E 69.1 General. E 70.0 Cleanouts. E 70.1 General. Part J Recreational Vehicle Site Drainage System Inlet. E 71.0 Sewer Riser Pipe. E 71.1 General. E 72.0 Location. E 72.1 General. E 73.0 Protection. E 73.1 General. Part K Recreational Vehicle Park Sanitary Disposal Stations. E 74.0 Where Required. E 74.1 General. E 75.0 Access. E 75.1 General. E 76.0 Construction. E 76.1 General. E 77.0 Flushing Device. E 77.1 General. Table E 68.1 Pipe Sizes
267	Part L Recreational Vehicle Park Water Supply Stations. E 78.0 Potable Watering Stations. E 78.1 General. Part M Recreational Vehicle Park Fuel Gas Equipment and Installations. E 79.0 Fuel Gas Equipment. E 79.1 General.
269	Appendix F Firefighter Breathing Air Replenishment Systems F 1.0 General. F 1.1 Applicability. F 2.0 Definitions. F 3.0 System Components. F 3.1 General. F 4.0 Required Installations. F 4.1 General. F 5.0 Exterior Fire Department Connection Panel and Enclosure. F 5.1 Purpose. F 5.2 Number of Panels. F 5.3 Location. F 5.4 Construction. F 5.5 Vehicle Protection. F 5.6 Enclosure Marking. F 5.7 Enclosure Components.
270	F 5.8 Pressure-Relief Valve. F 5.9 Security. F 6.0 Interior Cylinder Fill Panels. F 6.1 Cabinet Requirements. F 6.2 Clearance and Access. F 6.3 Door. F 6.4 Cabinet Marking. F 6.5 Cabinet Components. F 6.5.1 Cylinder Fill Panel. F 6.6 Cylinder Filling Hose. F 6.7 Security. F 7.0 Interior Cylinder Fill Stations and Enclosures. F 7.1 Location. F 7.2 Security. F 7.3 Components. F 7.4 Cylinder Filling Hose. F 7.5 Enclosure and Air Filling Station Marking. F 8.0 Materials. F 8.1 General. F 8.2 Tubing. F 8.3 Fittings.
271	F 8.4 Prohibited Materials. F 8.5 Pressure Monitoring Switch. F 8.6 Isolation Valve. F 9.0 System Requirements. F 9.1 Protection. F 9.2 Markings. F 9.3 Tubing Markings. F 9.4 Support. F 10.0 Design Criteria. F 10.1 Fill Time. F 10.2 Fill Panels or Stations Location. F 10.2.1 High-Rise Buildings. F 10.2.2 Underground Structures. F 10.2.3 Installation Locations. F 11.0 System Assembly Requirements. F 11.1 General. F 11.2 Welding Requirements.
272	F 11.3 Prevention of Contamination. F 12.0 System Acceptance and Certification. F 12.1 Static Pressure Testing. F 12.2 Low Pressure Switch Test F 12.3 Compatibility Check. F 12.4 Material Certifications. F 12.5 Air Sampling. F 12.5.1 Air Quality Analysis. F 12.6 Annual Air Sampling. F 12.7 Final Proof Test.
273	Appendix G Sizing of Venting Systems Serving Appliances Equipped with Draft Hoods, Category I Appliances, and Appliances Listed for Use with Type B Vents G 1.0 Examples Using Single Appliance Venting Tables. TABLE FIGURES Figure G 1.0(a) Type B Double-Wall Vent System Serving a Single Appliance with a Type B Double-Wall Vent Figure G 1.0(b) Type B Double-Wall Vent System Serving a Single Appliance with a Single-Wall Metal Vent Connector Figure G 1.0(c) Vent System Serving a Single Appliance with a Masonry Chimney and a Type B Double-Wall Vent Connector Figure G 1.0(d) Vent System Serving a Single Appliance Using a Masonry Chimney and a Single-Wall Metal Vent Connector
274	Figure G 1.0(e) Asbestos Cement Type B or Single-Wall Metal Vent System Serving a Single Draft Hood-Equipped Appliance Figure G 1.0(f) Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Type B Double-Wall Vent Connectors Figure G 1.0(g) Vent System Serving Two or More Appliances with Type B Double-Wall Vent and Single-Wall Metal Vent Connectors Figure G 1.0(h) Masonry Chimney Serving Two or More Appliances with Type B Double-Wall Vent Connectors
275	Figure G 1.0(i) Masonry Chimney Serving Two or More Appliances with Figure G 1.0(j) Asbestos Cement Type B or Single-Wall Metal Vent Systems Serving Two or More Draft Hood-Equipped Appliances Figure G 1.0(k) Use of Manifolded Common Vent Connectors Figure G 1.0(l) Use of Offset Common Vent
276	G 1.1 Example 1: Single Draft Hood-Equipped Appliance. Figure G 1.0(m) Multistory Gas Vent Design Procedure for Each Segment of System Figure G 1.0(n) Principles of Design of Multistory Vents Using Vent
277	G 1.2 Example 2: Single Fan-Assisted Appliance. G 1.3 Example 3: Interpolating Between Table Values. G 2.0 Examples Using Common Venting Tables. G 2.1 Example 4: Common Venting Two Draft Hood-Equipped Appliances. Figure G 1.1 Single Draft Hood-Equipped Appliance – Example 1 Figure G 1.2 Single Fan-Assisted Appliance – Example 2
278	G 2.2 Example 5(a): Common Venting a Draft Hood-Equipped Water Heater with a Fan-Assisted Furnace into a Type B Vent. Figure G 2.1 Common Venting Two Draft Hood-Equipped Appliances – Example 4 Figure G 2.2 Common Venting a Draft Hood-Equipped Water Heater with a Fan-Assisted Furnace into a Type B Double-Wall Common Vent – Example 5(a)
279	G 2.3 Example 5(b): Common Venting into an Interior Masonry Chimney. Table G 2.3 Masonry Chimney Liner Dimensions with Circular Equivalents
280	G 2.4 Example 5(c): Common Venting into an Exterior Masonry Chimney.
283	Appendix H Private Sewage Disposal Systems H 1.0 Private Sewage Disposal. H 1.1 General Requirements. H 1.2 Quantity and Quality. H 1.3 Septic Tank and Disposal Field Systems. H 1.4 Flood Hazard Areas. H 1.5 Design. H 1.6 Capacity. H 1.7 Location. H 1.8 Building Permit. H 1.9 Additional Requirements. H 1.10 Alternate Systems. TABLES CHART
284	H 2.0 Capacity of Septic Tanks. H 2.1 General. H 3.0 Area of Disposal Fields and Seepage Pits. H 3.1 General. Table H 1.7 Location of Sewaage Disposal System
285	Table H 2.1 Capacity of Septic Tanks Table H 2.1(1) Estimated Waste/Sewage Flow Rates
286	Table H 2.1(2) Design Criteria of Five Typical Soils
287	H 4.0 Percolation Test. H 4.1 Pit Sizes. H 4.2 Absorption Qualities. H 4.3 Absorption Rates. H 5.0 Septic Tank Construction. H 5.1 Plans. H 5.2 Design. H 5.3 Construction. H 5.4 Compartments. H 5.5 Access. Table H 2.1(3) Leaching Area Size Based on Septic Tank Capacity
288	H 5.6 Pipe Opening Sizes. H 5.7 Pipe Extension. H 5.8 Free Vent Area. H 5.9 Sidewalls. H 5.10 Partitions and Baffles. H 5.11 Structural Design. H 5.12 Manholes. H 5.13 Materials. H 5.14 Prefabricated Septic Tanks. H 6.0 Disposal Fields. H 6.1 Distribution Lines. H 6.2 Filter Material.
289	H 6.3 Grade Board. H 6.4 Seepage Pits. H 6.5 Distribution Boxes. H 6.6 Laterals. H 6.7 Connections. H 6.8 Dosing Tanks. H 6.9 Construction. H 6.10 Joints. H 7.0 Seepage Pits. H 7.1 Capacity. H 7.2 Multiple Installations. H 7.3 Construction. H 7.4 Lining. Table H 6.9 General Disposal Field Requirements
290	H 7.5 Brick and Block. H 7.6 Sidewall. H 7.7 Arch and Dome. H 7.8 Location. H 7.9 Inlet Fitting. H 8.0 Cesspools. H 8.1 Limitations. H 8.2 Septic Tanks. H 8.3 Construction. H 8.4 Existing Installations. H 9.0 Commercial or Industrial Special Liquid-Waste Disposal. H 9.1 Interceptor. H 9.2 Installation. H 9.3 Sampling Box. H 9.4 Design and Structural Requirement. H 9.5 Location. H 9.6 Waste Discharge. H 9.7 Design Criteria. H 10.0 Inspection and Testing. H 10.1 Inspection.
291	H 10.2 Testing. H 11.0 Abandoned Sewers and Sewage Disposal Facilities. H 11.1 Plugged and Capped. H 11.2 Fill Material. H 11.3 Filling Requirements. H 11.4 Owner. H 11.5 Permittee. Chart H 9.7 Recommended Design Criteria
292	H 12.0 Drawings and Specifications. H 12.1 General.
293	Appendix I Installation Standards IS_INDEX (TOC)
295	IS 1
299	IS 2
305	IS 3
313	IS 4
317	IS 5
323	IS 6
325	IS 7
329	IS 8
337	IS 9
343	IS 11
347	IS 12
351	IS 13
353	IS 15
359	IS 18
361	IS 20
373	IS 21
379	IS 26
381	IS 27
385	IS 28
389	IS 29
393	SIS 1
397	SIS 2
399	Appendix J Combination of Indoor and Outdoor Combustion and Ventilation Opening Design J 1.0 General. J 1.1 Example of Combination Indoor and Outdoor Combustion Air Opening. TABLE
400	Table J 1.1 Standard Method: Required Volume, All Appliances
401	Appendix K Potable Rainwater Catchment Systems K 101.0 General. K 101.1 Applicability. K 101.2 System Design. K 101.3 Permit. K 101.3.1 Plumbing Plan Submission. K 101.3.2 System Changes. K 101.4 Product and Material Approval. 101.4.1 Plumbing Materials and Systems. K 101.5 Maintenance and Inspection. K 101.5.1 Frequency. K 101.5.2 Maintenance Log. K 101.5.3 Maintenance Responsibility. K 101.6 Operation and Maintenance Manual. K 101.7 Minimum Water Quality Requirements. K 101.8 Material Compatibility. K 101.9 System Controls. TABLE
402	K 102.0 Connection. K 102.1 General. K 102.2 Connections to Public or Private Potable Water Systems. K 102.3 Backflow Prevention. K 103.0 Potable Rainfall Catchment System Materials. K 103.1 Collections Surfaces. K 103.1.1 Prohibited. K 103.2 Rainwater Catchment System Drainage Materials. K 103.3 Storage Tanks. K 103.4 Water Supply and Distribution Materials. K 104.0 Design and Installation. K 104.1 Collection Surfaces. K 104.1.1 Prohibited Discharges. K 104.2 Minimum Water Quality. Table K 101.5 Minimum Potable Rainwater Catchment System Testing, Inspection, and Maintenance Frequency
403	K 104.2.1 Filtration Devices. K 104.2.2 Disinfection Devices. K 104.3 Overhanging Tree Branches and Vegetation. K 104.4 Rainwater Storage Tanks. K 104.4.1 Location. K 104.4.1.1 Above Grade. K 104.4.1.2 Below Grade. K 104.4.2 Drainage and Overflow. K 104.4.2.1 Overflow Outlet Size. K 104.4.3 Opening and Access Protection. K 104.4.3.1 Animals and Insects. K 104.4.3.2 Human Access. K 104.4.3.3 Exposure to Sunlight. K 104.4.4 Inlets. K 104.4.5 Primary Tank Outlets. K 104.5 Pumps. K 104.6 Roof Drains. K 104.7 Water Quality Devices and Equipment.
404	K 104.7.1 Filtration and Disinfection Systems. K 104.8 Freeze Protection. K 104.9 Roof Washer or Pre-Filtration System. K 104.9.1 Size. K 104.9.2 Debris Screen. K 104.9.3 Drain Discharge. K 104.9.4 Automatic Drain. K 104.10 Filtration and Disinfection Systems. K 104.11 Roof Gutters. K 104.12 Drains, Conductors, and Leaders. K 104.13 Size of Potable Water Piping. K 105.0 Cleaning. K 105.1 General.
405	Appendix L Sustainable Practices L 101.0 General. L 101.1 Applicability. L 101.2 Definition of Terms. L 201.0 Definitions. L 201.1 Energy Star. L 201.2 Gang Showers (Non-Residential). L 201.3 Kitchen and Bar Sink Faucets. L 201.4 Lavatory Faucet. L 201.5 Maintenance. L 201.6 Metering Faucet. L 201.7 Multi-Occupant Spaces. L 201.8 Pre-Rinse Spray Valve. L 201.9 Run Out. L 201.10 Self Closing Faucet. L 201.11 Single Occupant Spaces. L 201.12 Submeter. L 201.13 WaterSense. L 201.14 Water Closet. L 201.15 Water Factor (WF). L 201.15.1 Clothes Washer (Residential and Commercial). L 301.0 General Regulations. L 301.1 Installation. L 301.2 Qualifications. L 302.0 Disposal of Liquid Waste. L 302.1 Disposal. L 302.2 Connections to Plumbing System Required. TABLES
406	L 303.0 Abandonment. L 303.1 General. L 401.0 Water Conservation and Efficiency. L 401.1 Scope. L 402.0 Water-Conserving Plumbing Fixtures and Fittings. L 402.1 General. L 402.2 Water Closets. L 402.2.1 Gravity, Pressure Assisted and Electro-Hydraulic Tank Type Water Closets. L 402.2.2 Flushometer-Valve Activated Water Closets. L 402.3 Urinals. L 402.3.1 Nonwater Urinals. L 402.4 Lavatory Faucets. L 402.4.1 Lavatory Faucets in Residences, Apartments, and Private Bathrooms in Lodging Facilities, Hospitals, and Patient Care Facilities. L 402.4.2 Lavatory Faucets in Other Than Residences, Apartments, and Private Bathrooms in Lodging Facilities. L 402.4.2.1 Maximum Flow Rate. L 402.4.2.2 Metering Faucets. L 402.5 Showers. L 402.5.1 Showerheads. L 402.5.2 Multiple Showerheads Serving One Shower Compartment.
407	L 403.0 Fountains and Other Water Features. L 403.1 Use of Alternate Water Source for Special Water Features. L 404.0 Meters. L 404.1 Required. L 404.2 Consumption Data. L 404.3 Access. L 405.0 Water-Powered Sump Pumps. L 405.1 General. L 501.0 Alternate Water Sources. L 501.1 Scope. L 501.2 System Design. L 501.3 Permit. L 501.3.1 Plumbing Plan Submission. L 501.3.2 System Changes. L 501.4 Product and Material Approval. L 501.4.1 Plumbing Materials and Systems. L 501.5 Maintenance and Inspection. L 501.5.1 Frequency. L 501.5.2 Maintenance Log.
408	L 501.5.3 Maintenance Responsibility. L 501.6 Operation and Maintenance Manual. L 501.7 Minimum Water Quality Requirements. L 501.8 Material Compatibility. L 501.9 System Controls. L 502.0 Connection. L 502.1 General. L 502.2 Connections to Public or Private Potable Water Systems. Table L 501.5.1 Minimum Potable Rainwater Catchment System Testing, Inspection, and Maintenance Frequency
409	L 502.3 Backflow Prevention. L 503.0 Potable Rainfall Catchment System Materials. L 503.1 Collections Surfaces. L 503.1.1 Prohibited. L 503.2 Rainwater Catchment System Drainage Materials. L 503.3 Storage Tanks. L 503.4 Water Supply and Distribution Materials. L 504.0 Design and Installation. L 504.1 Collection Surfaces. L 504.1.1 Prohibited Discharges. L 504.2 Minimum Water Quality. L 504.2.1 Filtration Devices. L 504.2.2 Disinfection Devices. L 504.3 Overhanging Tree Branches and Vegetation. L 504.4 Rainwater Storage Tanks. L 504.4.1 Location. L 504.4.1.1 Above Grade. L 504.4.1.2 Below Grade. L 504.4.2 Drainage and Overflow. L 504.4.2.1 Overflow Outlet Size.
410	L 504.4.3 Opening and Access Protection. L 504.4.3.1 Animals and Insects. L 504.4.3.2 Human Access. L 504.4.3.3 Exposure to Sunlight. L 504.4.4 Inlets. L 504.4.5 Primary Tank Outlets. L 504.5 Pumps. L 504.6 Roof Drains. L 504.7 Water Quality Devices and Equipment. L 504.7.1 Filtration and Disinfection Systems. L 504.8 Freeze Protection. L 504.9 Roof Washer or Pre-Filtration System. L 504.9.1 Size. L 504.9.2 Debris Screen. L 504.9.3 Drain Discharge. L 504.9.4 Automatic Drain. L 504.10 Filtration and Disinfection Systems. L 504.11 Roof Gutters. L 504.12 Drains, Conductors, and Leaders. L 504.13 Size of Potable Water Piping. L 505.0 Cleaning. L 505.1 General. L 601.0 Water Heating Design, Equipment and Installation. L 601.1 Scope.
411	L 602.0 Service Hot Water – Low-Rise Residential Buildings. L 602.1 General. L 602.2 Water Heaters and Storage Tanks. L 602.3 Recirculation Systems. L 602.3.1 Pump Operation. L 602.3.2 Demand Controlled. L 602.3.3 System Balancing. L 602.3.4 Flow Balancing Valves. L 602.3.5 Air Elimination. L 602.3.6 Gravity or Thermosyphon Systems. L 602.4 Central Water Heating Equipment. L 602.5 Insulation. L 602.6 Hard Water. L 602.7 Maximum Volume of Hot Water. L 602.7.1 Central Core/Remote Manifold. L 602.7.2 Central Manifold.
412	L 602.7.3 Recirculation Loop. L 603.0 Service Hot Water – Other Than Low-Rise Residential Buildings. L 603.1 General. L 603.2 Service Water Heating. L 603.2.1 New Buildings. L 603.2.2 Additions to Existing Buildings. L 603.2.3 Alterations to Existing Buildings. L 603.3 Compliance Path(s). L 603.3.1 Energy Cost Budget Method. L 603.4 Mandatory Provisions. L 603.4.1 Load Calculations. L 603.4.2 Equipment Efficiency. L 603.4.3 Insulation. Table L 602.7 Water Volume for Distribution Piping Materials
413	Table L 603.4.2 Performance Requirements for Water Heating Equipment
414	L 603.4.4 Hot Water System Design. L 603.4.4.1 Recirculation System Balancing. L 603.4.4.2 Flow Balancing Valves. L 603.4.4.3 Air Elimination. L 603.4.4.4 Maximum Volume of Hot Water. L 603.4.5 Service Water Heating System Controls. L 603.4.5.1 Temperature Controls. L 603.4.5.2 Temperature Maintenance Controls. L 603.4.5.3 Outlet Temperature Controls. L 603.4.5.4 Circulating Pump Controls. L 603.4.6 Pools. L 603.4.6.1 Pool Heaters. L 603.4.6.2 Pool Covers. L 603.4.6.3 Time Switches. L 603.4.7 Heat Traps. L 603.5 Prescriptive Path. L 603.5.1 Space Heating and Water Heating.
415	L 603.5.2 Service Water Heating Equipment. L 603.5.3 Heat Recovery for Service Water Heating. L 603.5.3.1 Capacity. L 603.6 Submittals. L 604.0 Solar Water Heating Systems. L 604.1 General. L 604.2 Annual Inspection and Maintenance. L 605.0 Hard Water. L 605.1 Softening and Treatment. L 701.0 Installer Qualifications. L 701.1 Scope. L 702.0 Qualifications. L 702.1 General. L 801.0 Method of Calculating Water Savings. L 801.1 Purpose. L 801.2 Calculation of Water Savings.
416	Table L 801.2(1) Water Use Baseline
417	Table L 801.2(2) Water Savings Calculator
419	Useful Tables Conversion Tables
421	Areas and Circumferences of Circles
422	Flow in Partly Filled (One-Half Full) Pipes
423	Flow in Partly Filled (Full) Pipes
424	Metric System (International System of Units – SI) General Comments
425	Unit Conversions
427	Index – A –
428	– B –
429	– C –
431	– D –
432	– E – – F –
434	– G –
435	– H – – I –
437	– J –
438	– K – – L –
439	– M –
440	– N – – O – – P –
443	– Q – – R –
444	– S –
448	– T –
450	– U – – V –
452	– W –
454	– X – – Y – – Z –

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WA	2012	456


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Standard Title	Seattle Plumbing Code
Published Code	WA
Publication Date	2012
Pages Count	456

WA SeattlePlumbingCode 2012

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