Division B
Acceptable Solutions

Part 2 — Plumbing Systems

Section 2.2. Materials and Equipment

2.2.1. General

2.2.1.1. Exposure of Materials
1) Intent StatementWhere unusual conditions exist, such as excessively corrosive soil or water, only materials suited for use in such locations shall be used.
2) Intent StatementMaterials and equipment used in a drainage system where excessively corrosive wastes are present shall be suitable for the purpose.
2.2.1.2. Restrictions on Re-Use
1) Intent StatementMaterials and equipment that have been used for a purpose other than the distribution of potable water shall not be subsequently used in a potable water system.
2.2.1.3. Identification
1) Intent StatementEvery length of pipe and every fitting shall
a) have cast, stamped or indelibly marked on it the maker's name or mark and the weight or class or quality of the product, or
b) be marked in accordance with the relevant standard.
2) Intent StatementMarkings required in Sentence (1) shall be visible after installation.
2.2.1.4. Pipe or Piping
1) Intent StatementWhere the term pipe or piping is used, it shall also apply to tube or tubing unless otherwise stated.
2.2.1.5. Withstanding Pressure
1) Intent StatementPiping, fittings and joints used in pressure sewer, forcemain or sump pump discharge applications shall be capable of withstanding at least one and one-half times the maximum potential pressure.
2.2.1.6. Working Pressure of a Water Service Pipe
1) Intent StatementThe working pressure rating of a water service pipe shall not be less than the maximum water main pressure at their point of connection as established by the water supply authority.

2.2.2. Fixtures

2.2.2.1. Surface Requirements
1) Intent StatementEvery fixture shall have a smooth, hard, corrosion-resistant surface free of flaws and blemishes that may interfere with cleaning.
2.2.2.2. Conformance to Standards
1) Intent StatementEvery fixture shall conform to CAN/CSA-B45 Series, “Plumbing Fixtures.”
2) Intent StatementEvery vitreous china fixture shall conform to ASME A112.19.2/CSA B45.1, “Ceramic Plumbing Fixtures.”
3) Intent StatementEvery enamelled cast-iron fixture shall conform to ASME A112.19.1/CSA B45.2, “Enamelled Cast Iron and Enamelled Steel Plumbing Fixtures.”
4) Intent StatementEvery porcelain-enamelled steel fixture shall conform to ASME A112.19.1/CSA B45.2, “Enamelled Cast Iron and Enamelled Steel Plumbing Fixtures.”
5) Intent StatementEvery stainless steel fixture shall conform to ASME A112.19.3/CSA B45.4, “Stainless Steel Plumbing Fixtures.”
6) Every plastic fixture shall conform to change beginCSA-B45.5/IAPMO Z124, “Plastic Plumbing Fixtures.”change end

contentHistory

7) Every hydromassage bathtub shall conform to change beginASME A112.19.7/CSA B45.10, “Hydromassage Bathtub Systems.”change end

contentHistory

8) Intent StatementMacerating toilet systems shall conform to CAN/CSA-B45.9, “Macerating Systems and Related Components.”
2.2.2.3. Showers
1) Intent StatementEvery shower receptor shall be constructed and arranged so that water cannot leak through the walls or floor.
2) Intent StatementNot more than 6 shower heads shall be served by a single shower drain.
3) Intent StatementWhere 2 or more shower heads are served by a shower drain, the floor shall be sloped and the drain located so that water from one head cannot flow over the area that serves another head. (See Appendix A.)
4) Intent StatementExcept for column showers, when a battery of shower heads is installed, the horizontal distance between 2 adjacent shower heads shall be not less than 750 mm.
2.2.2.4. Concealed Overflows
1) Intent StatementA dishwashing sink and a food preparation sink shall not have concealed overflows. (See Appendix A.)
2.2.2.5. Water Closets in Public Washrooms
1) Intent StatementWhen a water closet is installed in a washroom for public use, it shall be of the elongated type and provided with a seat of the open front type.

2.2.3. Traps and Interceptors

2.2.3.1. Traps
1) Intent StatementExcept as provided for in Sentence (2), every trap shall
a) have a trap seal depth of not less than 38 mm,
b) be so designed that failure of the seal walls will cause exterior leakage, and
c) have a water seal that does not depend on the action of moving parts.
(See Appendix A.)
2) Intent StatementThe trap seal depth on fixtures draining to an acid waste system shall be a minimum of 50 mm.
3) Intent Statementchange beginExcept for a floor-mounted service sink,change end every trap that serves a lavatory, a sink or a laundry tray shall
a) be provided with a cleanout plug located at the lowest point of the trap and of the same material as the trap, except that a cast-iron trap shall be provided with a brass cleanout plug, or
b) be designed so that part of the trap can be removed for cleaning purposes.
(See Appendix A.)
4) Intent StatementA bell trap shall not be installed in a drainage system. (See Appendix A.)
5) Intent StatementA drum trap shall not be used as a fixture trap unless required to serve as an interceptor and access for servicing is provided.
2.2.3.2. Interceptors
1) Intent StatementEvery interceptor shall be designed so that it can be readily cleaned.
2) Intent StatementEvery grease interceptor shall
a) be designed so that it does not become air bound, and
b) not have a water jacket.
2.2.3.3. Tubular Traps
1) Tubular metal or plastic traps conforming to change beginASME A112.18.2/CSA B125.2, “Plumbing Waste Fittings,”change end shall be used only in accessible locations.

contentHistory

2.2.4. Pipe Fittings

2.2.4.1. T and Cross Fittings
(See Appendix A.)
1) Intent StatementA T fitting shall not be used in a drainage system, except to connect a vent pipe.
2) Intent StatementA cross fitting shall not be used in a drainage system.
2.2.4.2. Sanitary T Fittings
(See Appendix A.)
1) Intent StatementA single or double sanitary T fitting shall not be used in a nominally horizontal soil-or-waste pipe, except that a single sanitary T fitting may be used to connect a vent pipe.
2) Intent StatementA double sanitary T fitting shall not be used to connect the trap arms of
a) back outlet water closets installed back-to-back, or
b) 2 urinals where no cleanout fitting is provided above the connection.
2.2.4.3. 90° Elbows
1) Intent StatementExcept as permitted in Sentence (2), 90° elbows of 4 inch size or less whose centre-line radius is less than the size of the pipe shall not be used to join 2 soil-or-waste pipes.
2) For sanitary drainage systems of 4 inch size or less, 90° elbows change begindescribed in Sentence (1)change end shall only be permitted
a) to change the direction of piping from horizontal to vertical, in the direction of flow,
b) where a trap arm enters a wall, or
c) to connect trap arms as permitted by Sentence 2.5.6.3.(2).

contentHistory

2.2.5. Non-Metallic Pipe and Fittings

(For a summary of pipe applications, see A-2.2.5., 2.2.6. and 2.2.7. in Appendix A.)
2.2.5.1. Asbestos-Cement Drainage Pipe and Fittings
1) Intent StatementExcept as provided in Sentence (2), asbestos-cement pipe and its fittings for use in a drain, waste or vent system shall conform to
a) CAN/CGSB-34.22, “Asbestos-Cement Drain Pipe,” or
b) CAN/CSA-B127.1, “Asbestos Cement Drain, Waste and Vent Pipe and Pipe Fittings.”
2) Intent StatementAsbestos-cement pipe and its fittings for use in a drain, waste or vent system that are used underground either outside a building or under a building shall conform to Sentence (1) or to
a) CAN/CGSB-34.9, “Asbestos-Cement Sewer Pipe,”
b) CAN/CGSB-34.23, “Asbestos-Cement House Connection Sewer Pipe,” or
c) CSA B127.2-M, “Components for Use in Asbestos Cement Building Sewer Systems.”
2.2.5.2. Asbestos-Cement Water Pipe and Fittings
1) Intent StatementAsbestos-cement water pipe, couplings and bends shall conform to CAN/CGSB-34.1, “Asbestos-Cement Pressure Pipe.”
2) Intent StatementAsbestos-cement water pipe shall not be used above ground.
2.2.5.3. Concrete Pipe and Fittings
1) Intent StatementConcrete pipe shall conform to
a) CAN/CSA-A257.1, “Non-Reinforced Circular Concrete Culvert, Storm Drain, Sewer Pipe, and Fittings,” or
b) CAN/CSA-A257.2, “Reinforced Circular Concrete Culvert, Storm Drain, Sewer Pipe, and Fittings.”
2) Intent StatementJoints with internal elastomeric gaskets shall conform to CAN/CSA-A257.3, “Joints for Circular Concrete Sewer and Culvert Pipe, Manhole Sections, and Fittings Using Rubber Gaskets.”
3) Intent StatementConcrete fittings fabricated on the site from lengths of pipe shall not be used. (See Appendix A.)
4) Intent StatementConcrete pipe shall not be used above ground inside a building.
5) Intent StatementPrecast reinforced circular concrete manhole sections, catch basins and fittings shall conform to CAN/CSA-A257.4, “Precast Reinforced Circular Concrete Manhole Sections, Catch Basins, and Fittings.”
2.2.5.4. Vitrified Clay Pipe and Fittings
1) Intent StatementVitrified clay pipe and fittings shall conform to CSA A60.1-M, “Vitrified Clay Pipe.”
2) Intent StatementCouplings and joints for vitrified clay pipe shall conform to CSA A60.3-M, “Vitrified Clay Pipe Joints.”
3) Intent StatementVitrified clay pipe and fittings shall not be used except for an underground part of a drainage system.
2.2.5.5. Polyethylene Pipe and Fittings
1) Intent Statement Polyethylene water pipe, tubing and fittings shall conform to Series 160 of CAN/CSA-B137.1, “Polyethylene (PE) Pipe, Tubing, and Fittings for Cold-Water Pressure Services.”
2) Intent StatementPolyethylene water pipe shall not be used except for a water service pipe.
3) Intent StatementButt fusion fittings for polyethylene pipe shall conform to ASTM D 3261, “Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing.”
2.2.5.6. Polyethylene Pipe Used Underground
1) Intent StatementPolyethylene pipe used underground outside a building for the rehabilitation of existing drainage systems using trenchless technology shall conform to ASTM F 714, “Polyethylene (PE) Plastic Pipe (SDR-PR) Based on Outside Diameter,” and shall be HDPE 3408 and SDR 11 or heavier. (See Appendix A.)
2.2.5.7. Crosslinked Polyethylene Pipe and Fittings
1) Intent StatementCrosslinked polyethylene pipe and its associated fittings used in hot and cold potable water systems shall conform to CAN/CSA-B137.5, “Crosslinked Polyethylene (PEX) Tubing Systems for Pressure Applications.” (See Appendix A.)
2.2.5.8. PVC Pipe and Fittings
1) Intent StatementPVC water pipe, fittings and solvent cement shall
a) conform to CAN/CSA-B137.3, “Rigid Polyvinylchloride (PVC) Pipe and Fittings for Pressure Applications,” and
b) have a pressure rating of not less than 1 100 kPa.
2) Intent StatementPVC water pipe fittings shall conform to
a) ASTM D 2466, “Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40,” or
b) ASTM D 2467, “Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80.”
3) Intent StatementPVC injection-moulded gasketed fittings shall conform to CAN/CSA-B137.2, “Polyvinylchloride (PVC) Injection-Moulded Gasketed Fittings for Pressure Applications.”
4) Intent StatementPVC water pipe and fittings referred to in Sentences (1), (2) and (3) shall not be used in a hot water system.
2.2.5.9. CPVC Pipe, Fittings and Solvent Cements
1) Intent StatementCPVC hot and cold water pipe, fittings and solvent cements shall conform to CAN/CSA-B137.6, “Chlorinated Polyvinylchloride (CPVC) Pipe, Tubing, and Fittings for Hot- and Cold-Water Distribution Systems.”
2) Intent StatementThe design temperature and design pressure of a CPVC piping system shall conform to Table 2.2.5.9.
Table 2.2.5.9.
Maximum Permitted Pressure for CPVC Piping at Various Temperatures
Forming part of Sentence 2.2.5.9.(2)
Maximum Temperature of Water, °C Maximum Permitted Pressures, kPa
10 3 150
20 2 900
30 2 500
40 2 100
50 1 700
60 1 300
70 1 000
80 700
90 500
100 400
2.2.5.10. Plastic Pipe, Fittings and Solvent Cement Used Underground
(See A-2.2.5.10. to 2.2.5.12. in Appendix A.)
1) Intent StatementPlastic pipe, fittings and solvent cement used underground outside a building or under a building in a drainage system shall conform to
a) ASTM F 628, “Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe With a Cellular Core,”
b) CAN/CSA-B181.1, “Acrylonitrile-Butadiene-Styrene (ABS) Drain, Waste, and Vent Pipe and Pipe Fittings,”
c) CAN/CSA-B181.2, “Polyvinylchloride (PVC) and Chlorinated Polyvinylchloride (CPVC) Drain, Waste, and Vent Pipe and Pipe Fittings,”
d) CAN/CSA-B182.1, “Plastic Drain and Sewer Pipe and Pipe Fittings,” with a pipe stiffness not less than 320 kPa,
e) CAN/CSA-B182.2, “PSM Type Polyvinylchloride (PVC) Sewer Pipe and Fittings,” with a pipe stiffness not less than 320 kPa,
f) CAN/CSA-B182.4, “Profile Polyvinylchloride (PVC) Sewer Pipe and Fittings,” with a pipe stiffness not less than 320 kPa, or
g) CAN/CSA-B182.6, “Profile Polyethylene (PE) Sewer Pipe and Fittings For Leak-Proof Sewer Applications,” with a pipe stiffness of not less than 320 kPa.
2.2.5.11. Transition Solvent Cement
(See A-2.2.5.10. to 2.2.5.12. in Appendix A.)
1) Intent StatementSolvent cement for transition joints shall conform to
a) CAN/CSA-B181.1, “Acrylonitrile-Butadiene-Styrene (ABS) Drain, Waste, and Vent Pipe and Pipe Fittings,” or
b) CAN/CSA-B181.2, “Polyvinylchloride (PVC) and Chlorinated Polyvinylchloride (CPVC) Drain, Waste, and Vent Pipe and Pipe Fittings.”
2) Intent StatementTransition solvent cement shall only be used for joining an ABS drainage system to a PVC drainage system.
2.2.5.12. Plastic Pipe, Fittings and Solvent Cement Used in Buildings
(See A-2.2.5.10. to 2.2.5.12. in Appendix A.)
1) Intent StatementPlastic pipe, fittings and solvent cement used inside or under a building in a drainage or venting system shall conform to
a) ASTM F 628, “Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe With a Cellular Core,”
b) CAN/CSA-B181.1, “Acrylonitrile-Butadiene-Styrene (ABS) Drain, Waste, and Vent Pipe and Pipe Fittings,” or
c) CAN/CSA-B181.2, “Polyvinylchloride (PVC) and Chlorinated Polyvinylchloride (CPVC) Drain, Waste, and Vent Pipe and Pipe Fittings.”
2) Requirements for combustible piping in relation to fire safety shall conform to Sentences 3.1.5.16.(1) and 9.10.9.6.(3) to (11), and Articles 3.1.9.4. and 9.10.9.7. of Division B of change beginBook I (General) of this Codechange end.

contentHistory

3) Where noncombustible piping pierces a fire separation or a fire stop, the requirements of fire stopping of Subsection 3.1.9., Sentence 9.10.9.6.(1) and Article 9.10.16.4. of Division B of change beginBook I (General) of this Codechange end shall apply.

contentHistory

2.2.5.13. Polyethylene/Aluminum/Polyethylene Composite Pipe and Fittings
1) Intent StatementPE/AL/PE composite pipe and fittings shall conform to CAN/CSA-B137.9, “Polyethylene/Aluminum/Polyethylene (PE-AL-PE) Composite Pressure-Pipe Systems.” (See Appendix A.)
2) change beginExcept as provided in Sentences (3) and (4), PE/AL/PE pipe and fittings shall not be used in hot water systems.change end

contentHistory

3) change beginPE/AL/PE pipe with a pressure rating of 690 kPa or greater at 82°C shall be permitted for hot water systems.change end

contentHistory

4) change beginPE/AL/PE pipe with a pressure rating of 690 kPa or greater at 82°C shall be used with fittings that conform to CAN/CSA-B137.10, “Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene (PEX-AL-PEX) Composite Pressure-Pipe Systems,” in hot water systems.change end

contentHistory

2.2.5.14. Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene Composite Pressure Pipe and Fittings
1) Intent StatementPEX/AL/PEX composite pipe and fittings used in hot and cold potable water systems shall conform to CAN/CSA-B137.10, “Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene (PEX-AL-PEX) Composite Pressure-Pipe Systems.” (See Appendix A.)
2.2.5.15. Polypropylene Pipe and Fittings
1) Intent StatementPolypropylene pipe and fittings used for hot and cold potable water systems shall conform to CAN/CSA-B137.11, “Polypropylene (PP-R) Pipe and Fittings for Pressure Applications.” (See Appendix A.)

2.2.6. Ferrous Pipe and Fittings

(For a summary of pipe applications, see A-2.2.5., 2.2.6. and 2.2.7. in Appendix A.)
2.2.6.1. Cast-Iron Drainage and Vent Pipe and Fittings
1) Intent StatementDrainage piping, vent piping and fittings made of cast iron shall conform to CSA B70, “Cast Iron Soil Pipe, Fittings, and Means of Joining.”
2) Intent StatementCast-iron soil pipe and fittings shall not be used in a water system.
2.2.6.2. Cast-Iron Fittings for Asbestos-Cement Drainage Pipe
1) Intent StatementCast-iron fittings designed for use with asbestos-cement pipe for drainage purposes shall conform to the applicable requirements of
a) CAN/CSA-B127.1, “Asbestos Cement Drain, Waste and Vent Pipe and Pipe Fittings,” or
b) CSA B127.2-M, “Components for Use in Asbestos Cement Building Sewer Systems.”
2.2.6.3. Threaded Cast-Iron Drainage Fittings
1) Intent StatementThreaded cast-iron drainage fittings shall conform to ASME B16.12, “Cast Iron Threaded Drainage Fittings.”
2) Intent StatementThreaded cast-iron drainage fittings shall not be used in a water system.
2.2.6.4. Cast-Iron Water Pipes
1) Intent StatementCast-iron water pipes shall conform to ANSI/AWWA C151/A21.51, “Ductile-Iron Pipe, Centrifugally Cast, for Water.”
2) Intent StatementCement mortar lining for cast-iron water pipes shall conform to ANSI/AWWA C104/A21.4, “Cement-Mortar Lining for Ductile-Iron Pipe and Fittings.”
3) Intent StatementCast-iron fittings for cast-iron or ductile-iron water pipes shall conform to ANSI/AWWA C110/A21.10, “Ductile-Iron and Gray-Iron Fittings.”
4) Intent StatementRubber gasket joints for cast-iron and ductile-iron pressure pipe for water shall conform to AWWA C111/A21.11, “Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings.”
2.2.6.5. Screwed Cast-Iron Water Fittings
1) Intent StatementScrewed cast-iron water fittings shall conform to ASME B16.4, “Gray Iron Threaded Fittings, Classes 125 and 250.”
2) Intent StatementScrewed cast-iron water fittings used in a water system shall be cement-mortar lined or galvanized.
3) Intent StatementScrewed cast-iron water fittings shall not be used in a drainage system.
2.2.6.6. Screwed Malleable Iron Water Fittings
1) Intent StatementScrewed malleable iron water fittings shall conform to ASME B16.3, “Malleable-Iron Threaded Fittings, Classes 150 and 300.”
2) Intent StatementScrewed malleable iron water fittings used in a water system shall be cement-mortar lined or galvanized.
3) Intent StatementScrewed malleable iron water fittings shall not be used in a drainage system.
2.2.6.7. Steel Pipe
1) Intent StatementExcept as provided in Sentences (2) and (3), welded and seamless steel pipe shall not be used in a plumbing system.
2) Intent StatementGalvanized steel pipe is permitted to be used in a drainage system or a venting system above ground inside a building.
3) Galvanized steel pipe and fittings shall not be used in a water distribution system except
a) in buildings of industrial occupancy as described in change beginBook I (General) of this Codechange end, or
b) for the repair of existing galvanized steel piping systems.
(See Appendix A.)

contentHistory

4) Intent StatementGalvanized steel pipe and fittings shall conform to ASTM A 53/A 53M, “Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.”
2.2.6.8. Corrugated Steel Pipe and Couplings
1) Intent StatementCorrugated steel pipe and couplings shall conform to CAN/CSA-G401, “Corrugated Steel Pipe Products.”
2) Intent StatementCorrugated steel pipe shall only be used underground outside a building in a storm drainage system.
3) Intent StatementCouplings for corrugated steel pipe shall be constructed so that when installed they shall
a) maintain the pipe alignment,
b) resist the separation of adjoining lengths of pipe,
c) prevent root penetration, and
d) prevent the infiltration of surrounding material.
2.2.6.9. Sheet Metal Leaders
1) Intent StatementA sheet metal leader shall not be used except above ground outside a building.
2.2.6.10. change beginStainless Steel Pipe
1) Stainless steel pipe shall conform to
a) ASTM A 312/A 312M, “Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes,” and
b) ASME B36.19M, “Stainless Steel Pipe.”
2) Only grade 304/304L or 316/316L stainless steel pipe shall be used.
2.2.6.11. Stainless Steel Butt Weld Pipe Fittings
1) Stainless steel butt weld pipe fittings shall conform to
a) ASTM A 403/A 403M, “Wrought Austenitic Stainless Steel Piping Fittings,” and
b) ASME B16.9 “Factory-Made Wrought Buttwelding Fittings.”
2) Stainless steel butt weld pipe fittings shall be made of a material that matches the grade of the pipe material used.
2.2.6.12. Stainless Steel Pipe Flanges
1) Stainless steel pipe flanges shall conform to ASME B16.5, “Pipe Flanges and Flanged Fittings: NPS 1/2 Through NPS 24 Metric/Inch Standard,” and
a) ASTM A 182/A 182M, “Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service,” or
b) ANSI/AWWA C228, “Stainless-Steel Pipe Flanges for Water Service-Sizes 2 In. Through 72 In. (50 mm Through 1,800 mm).”
2) Stainless steel pipe flanges shall be made of a material that matches the grade of the pipe material used.
2.2.6.13. Stainless Steel Threaded Fittings
1) Stainless steel threaded fittings shall be schedule 40s or greater conforming to
a) ASTM A 182/A 182M, “Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service,” or
b) ASTM A 351/A 351M, “Castings, Austenitic, for Pressure-Containing Parts.”
2) Stainless steel threaded fittings shall be made of a material that matches the grade of the pipe material used.
2.2.6.14. Stainless Steel Tube
1) Stainless steel tube shall conform to
a) ASTM A 269, “Seamless and Welded Austenitic Stainless Steel Tubing for General Service,” and
b) ASME B16.9, “Factory-Made Wrought Buttwelding Fittings.”
2) Only grade 304/304L or 316/316L stainless steel tube shall be used.
2.2.6.15. Stainless Steel Pipe and Tube
1) The use of stainless steel pipe and tube shall conform to Table 2.2.6.15.
Table 2.2.6.15.
Permitted Uses of Stainless Steel Tube and Pipe
Forming part of Sentence 2.2.6.15.(1)
Stainless Steel Tube or Pipe Plumbing Purposes
Water Distribution System Building Sewer Drainage System Venting System
Underground Aboveground Underground Aboveground Underground Aboveground
Stainless steel pipe P P P P P P P
Stainless steel tube P P N N N N N
P = Permitted N = Not Permittedchange end

2.2.7. Non-Ferrous Pipe and Fittings

(For a summary of pipe applications, see A-2.2.5., 2.2.6. and 2.2.7. in Appendix A.)
2.2.7.1. Copper and Brass Pipe
1) Intent StatementCopper pipe shall conform to ASTM B 42, “Seamless Copper Pipe, Standard Sizes.”
2) Intent StatementBrass pipe shall conform to ASTM B 43, “Seamless Red Brass Pipe, Standard Sizes.”
2.2.7.2. Brass or Bronze Pipe Flanges and Flanged Fittings
1) Intent StatementBrass or bronze pipe flanges and flanged fittings shall conform to ASME B16.24, “Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500.”
2.2.7.3. Brass or Bronze Threaded Water Fittings
1) Intent StatementBrass or bronze threaded water fittings shall conform to ASME B16.15, “Cast Copper Alloy Threaded Fittings, Classes 125 and 250.”
2) Intent StatementBrass or bronze threaded water fittings shall not be used in a drainage system.
2.2.7.4. Copper Tube
1) Intent StatementCopper tube shall conform to
a) ASTM B 88, “Seamless Copper Water Tube,” or
b) ASTM B 306, “Copper Drainage Tube (DWV).”
2) Intent StatementExcept as provided in Sentence (3), the use of copper tube shall conform to Table 2.2.7.4.
3) Intent StatementCopper tube shall not be used for the fixture drain or the portion of the vent pipe below the flood level rim of a flush-valve-operated urinal.
Table 2.2.7.4.
Permitted Use of Copper Tube and Pipe
Forming part of Sentence 2.2.7.4.(2)
Type of Copper Tube or Pipe Plumbing Purposes

Water Service Pipe

Water Distribution System

Building Sewer

Drainage System

Venting System
Under-ground Above-ground Under-ground Above-ground Under-ground Above-ground
K & L hard temper N N P P P P P P
K & L soft temper P P P N N N N N
M hard temper N N N N N P N P
M soft temper N N N N N N N N
DWV N N N N N P N P
P = Permitted N = Not Permitted

contentHistory

2.2.7.5. Solder-Joint Drainage Fittings
1) Intent StatementSolder-joint fittings for drainage systems shall conform to
a) ASME B16.23, “Cast Copper Alloy Solder Joint Drainage Fittings: DWV,” or
b) ASME B16.29, “Wrought Copper and Wrought Copper Alloy Solder-Joint Drainage Fittings – DWV.”
2) Intent StatementSolder-joint fittings for drainage systems shall not be used in a water system.
2.2.7.6. Solder-Joint Water Fittings
1) Intent StatementExcept as provided in Sentence (2), solder-joint fittings for water systems shall conform to
a) ASME B16.18, “Cast Copper Alloy Solder-Joint Pressure Fittings,” or
b) ASME B16.22, “Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings.”
2) Intent StatementSolder-joint fittings for water systems not made by casting or the wrought process shall conform to the applicable requirements of ASME B16.18, “Cast Copper Alloy Solder-Joint Pressure Fittings.”
2.2.7.7. Flared-Joint Fittings for Copper Water Systems
1) Intent StatementFlared-joint fittings for copper tube water systems shall conform to ASME B16.26, “Cast Copper Alloy Fittings for Flared Copper Tubes.”
2) Intent StatementFlared-joint fittings for copper tube water systems not made by casting shall conform to the applicable requirements of ASME B16.26, “Cast Copper Alloy Fittings for Flared Copper Tubes.”
2.2.7.8. Lead Waste Pipe and Fittings
1) Intent StatementLead waste pipe and fittings shall not be used in a water system or as a building sewer.
2) Intent StatementWhen there is a change in size of a lead closet bend, the change shall be in the vertical section of the bend or made in a manner that prevents the retention of liquid in the bend.

2.2.8. Corrosion-Resistant Materials

2.2.8.1. Pipes and Fittings
1) Pipes and fittings to be used for drainage and venting of acid and corrosive wastes shall conform to
a) ASTM A 518/A 518M, “Corrosion-Resistant High-Silicon Iron Castings,”
b) ASTM C 1053, “Borosilicate Glass Pipe and Fittings for Drain, Waste, and Vent (DWV) Applications,” or
c) CAN/CSA-B181.3, “Polyolefin and Polyvinylidene Fluoride (PVDF) Laboratory Drainage Systems.”

contentHistory

2.2.9. Jointing Materials

2.2.9.1. Cement Mortar
1) Intent StatementCement mortar shall not be used for jointing.
2.2.9.2. Solders and Fluxes
1) Intent StatementSolders for solder joint fittings shall conform to ASTM B 32, “Solder Metal.”
2) Intent StatementSolders and fluxes having a lead content in excess of 0.2% shall not be used in a potable water system.
3) Intent StatementFluxes for soldered joints shall conform to ASTM B 813, “Liquid and Paste Fluxes for Soldering of Copper and Copper Alloy Tube.”
4) change beginBrazing alloys shall conform to ANSI/AWS A5.8, “Specification for Filler Metals for Brazing and Braze Welding,” BCuP range.change end

contentHistory

2.2.10. Miscellaneous Materials

2.2.10.1. Brass Floor Flanges
1) Intent StatementBrass floor flanges shall conform to CSA B158.1, “Cast Brass Solder Joint Drainage, Waste and Vent Fittings.”
2.2.10.2. Screws, Bolts, Nuts and Washers
1) Intent StatementEvery screw, bolt, nut and washer shall be of corrosion-resistant materials when used
a) to connect a water closet to a water closet flange,
b) to anchor the water closet flange to the floor, or
c) to anchor the water closet to the floor.
2.2.10.3. Cleanout Fittings
1) Intent StatementEvery plug, cap, nut or bolt that is intended to be removable from a ferrous fitting shall be of a non-ferrous material.
2) Intent StatementA cleanout fitting that, as a result of normal maintenance operations, cannot withstand the physical stresses of removal and reinstallation or cannot ensure a gas-tight seal shall not be installed.
2.2.10.4. Mechanical Couplings
1) Intent StatementGroove and shoulder type mechanical couplings for pressure applications shall conform to CSA B242, “Groove- and Shoulder-Type Mechanical Pipe Couplings.”
2) Intent StatementMechanical couplings for non-pressure applications shall conform to CAN/CSA-B602, “Mechanical Couplings for Drain, Waste, and Vent Pipe and Sewer Pipe.”
2.2.10.5. Saddle Hubs
1) Intent StatementA saddle hub or fitting shall not be installed in drainage, venting or water systems. (See Appendix A.)
2.2.10.6. Supply and Waste Fittings
1) Supply fittings shall conform to
a) change beginASME A112.18.1/CSA B125.1, “Plumbing Supply Fittings,” orchange end
b) change beginCSA B125.3, “Plumbing Fittings.”change end

contentHistory

2) change beginWaste fittings shall conform to ASME A112.18.2/CSA B125.2, “Plumbing Waste Fittings.”change end

contentHistory

2.2.10.7. change beginWater Temperature Control
(See Appendix A.)
1) Except as provided in Sentence (2), all valves supplying fixed-location shower heads shall be individual pressure-balanced or thermostatic-mixing valves conforming to change beginASME A112.18.1/CSA B125.1, “Plumbing Supply Fittings.”change end

contentHistory

2) Individual pressure-balanced or thermostatic-mixing valves shall not be required for showers having a single tempered water supply that is controlled by a master thermostatic-mixing valve conforming to change beginCSA B125.3, “Plumbing Fittings.”change end

contentHistory

3) All mixing valves supplying shower heads shall be of the pressure-balanced, thermostatic, or combination pressure-balanced/thermostatic type capable of
a) maintaining a water outlet temperature that does not exceed 49°C, and
b) limiting thermal shock.

contentHistory

4) The temperature of water discharging into a bathtub shall not exceed 49°C.change end

contentHistory

2.2.10.8. Direct Flush Valves
1) Intent StatementEvery direct flush valve shall
a) open fully and close positively under service pressure,
b) complete its cycle of operation automatically,
c) be provided with a means of regulating the volume of water that it discharges, and
d) be provided with a vacuum breaker unless the fixture is designed so that back-siphonage cannot occur.
2.2.10.9. Drinking Fountain Bubblers
1) Intent StatementThe orifice of every drinking fountain bubbler shall
a) be of the shielded type, and
b) direct the water upward at an angle of approximately 45°.
2) Intent StatementEvery drinking fountain bubbler shall include a means of regulating the flow to the orifice.
3) Intent StatementBubblers shall be installed only on drinking fountains. (See Appendix A.)
2.2.10.10. Back-Siphonage Preventers and Backflow Preventers
1) Except as provided in Sentence (2), back-siphonage preventers and backflow preventers shall conform to
a) change beginCSA B64.0, “Definitions, General Requirements, and Test Methods for Vacuum Breakers and Backflow Preventers,”change end
b) change beginCSA B64.1.1, “Atmospheric Vacuum Breakers (AVB),”change end
c) change beginCSA B64.1.2, “Pressure Vacuum Breakers (PVB),”change end
d) change beginCSA B64.2, “Hose Connection Vacuum Breakers (HCVB),”change end
e) change beginCSA B64.2.1, “Hose Connection Vacuum Breakers (HCVB) with Manual Draining Feature,”change end
f) change beginCSA B64.2.2, “Hose Connection Vacuum Breakers (HCVB) with Automatic Draining Feature,”change end
g) change beginCSA B64.3, “Dual Check Valve Backflow Preventers with Atmospheric Port (DCAP),”change end
h) change beginCSA B64.4, “Reduced Pressure Principle Backflow Preventers (RP),”change end
i) change beginCSA B64.5, “Double Check Valve (DCVA) Backflow Preventers,”change end
j) change beginCSA B64.6, “Dual Check Valve (DuC) Backflow Preventers,”change end
k) change beginCSA B64.7, “Laboratory Faucet Vacuum Breakers (LFVB),”change end or
l) change beginCSA B64.8, “Dual Check Valve Backflow Preventers with Intermediate Vent (DuCV).”change end

contentHistory

2) Back-siphonage preventers for tank-type water closets (anti-siphon change beginfill valveschange end) shall conform to change beginCSA B125.3, “Plumbing Fittings.”change end

contentHistory

2.2.10.11. Relief Valves
1) Intent StatementTemperature-relief, pressure-relief, combined temperature- and pressure-relief, and vacuum-relief valves shall conform to ANSI Z21.22/CSA 4.4-M, “Relief Valves for Hot Water Supply Systems.”
2.2.10.12. Reducing Valves
1) Intent StatementDirect-acting water-pressure-reducing valves for domestic water supply systems shall conform to CAN/CSA-B356, “Water Pressure Reducing Valves for Domestic Water Supply Systems.”
2.2.10.13. Solar Domestic Hot Water
1) Equipment for solar heating of potable water shall conform to change beginCAN/CSA-F379 Series, “Packaged Solar Domestic Hot Water Systems (Liquid-to-Liquid Heat Transfer),” excluding CAN/CSA-F379S1.change end

contentHistory

2.2.10.14. Vent Pipe Flashing
1) Intent StatementFlashing fabricated on-site for vent pipes shall be fabricated from
a) copper sheet not less than 0.33 mm thick,
b) aluminum sheet not less than change begin0.48 mmchange end thick,
c) alloyed zinc sheet not less than 0.35 mm thick,
d) lead sheet not less than change begin1.73 mmchange end thick,
e) galvanized steel sheet not less than change begin0.33 mmchange end thick, or
f) polychloroprene (neoprene) not less than 2.89 mm thick.
2) Intent StatementPrefabricated flashing for vent pipes shall conform to CSA B272, “Prefabricated Self-Sealing Roof Vent Flashings.” (See Article 2.5.6.5. for location of vent pipe terminals.)
2.2.10.15. Water Hammer Arresters
1) Intent StatementWater hammer arresters shall conform to ANSI/ASSE 1010, “Water Hammer Arresters.”
2.2.10.16. Air Admittance Valves
1) Air admittance valves shall conform to change beginASSE 1051, “Individual and Branch Type Air Admittance Valves (AAVs) for Sanitary Drainage Systems.”change end (See Appendix A.)

contentHistory