jswizzle3737/ontario_laws_and_regs huggingface dataset:
6.2.3.20. Return-Air System (1) The return-air system shall be designed to handle the entire air supply. (2) Where any part of a return duct will be exposed to radiation from the furnace heat exchanger or other radiating part within the furnace, such part of a return duct directly above or within 600 mm of the outside furnace casing shall be noncombustible. (3) Return ducts serving solid fuel-fired furnaces shall be constructed of noncombustible material. (4) Where combustible return ducts are permitted, they shall be lined with noncombustible material below floor registers, at the bottom of vertical ducts and under furnaces having a bottom return. (5) The return-air system shall be designed so that the negative pressure from the circulating fan cannot affect the furnace combustion air supply nor draw combustion products from joints or openings in the furnace or flue pipe. (6) Return-air inlets shall not be installed in an enclosed room or crawl space that provides combustion air to a fuel-fired appliance. 6.2.4.Air Ducts for Low Capacity Systems
6.2.4.1. Application (1) Except as provided in Sentence (2), the design, construction and installation of air duct distribution systems serving heating, ventilating and air-conditioning systems shall conform to Subsection 6.2.3. (2) The requirements of this Subsection apply to individual dwelling units for the design, construction and installation of air duct distribution systems which serve ventilating or air-conditioning systems or which serve heating systems in which the rated heat input does not exceed 120 kW.
6.2.4.2. Duct Design (1) Materials in supply ducts shall conform to Article 6.2.3.2. (2) Galvanized steel or aluminum supply ducts shall conform to Table 6.2.4.2. Table 6.2.4.2. Minimum Metal Thickness of Ducts Forming Part of Sentence 6.2.4.2.(2)  Type of Duct

Maximum Diameter, Mm

Maximum Width or Depth, mm

Minimum metal thickness, mm


Duct Material


Galvanized Steel   Aluminum


Round ducts serving single dwelling units

125 or less

—

0.254

0.30


Round

350

—

0.33

0.30


 

over 350

—

0.41

0.41


Rectangular, 

—

350

0.33

0.30


enclosed

—

over 350

0.41

0.41


Rectangular, not enclosed, for single dwelling units, with required clearance up to 12 mm

—   —

350   over 350

0.33   0.41

0.41   0.48


Rectangular, not enclosed, with required clearance of more than 12 mm

—   —

350   over 350

0.41   0.48

0.41   0.48


Column 1

2

3

4

5 (3) The design of fitting for ducts shall conform to SMACNA, “HVAC Duct Construction Standards — Metal and Flexible”, except that metal thickness shall conform to Table 6.2.4.2.
6.2.4.3. Construction and Installation of Ducts and Plenums (1) Rectangular panels in plenums and ducts more than 300 mm wide shall be shaped to provide sufficient stiffness. (2) Where the installation of heating supply ducts in walls and floors creates a space between the duct and construction material, the space shall be fire stopped with noncombustible material at each end. (3) Ducts shall be securely supported by metal hangers, straps, lugs or brackets, except that where zero clearance is permitted, wooden brackets may be used. (4) All round duct joints shall be tight-fitting and lapped not less than 25 mm. (5) Rectangular duct connections shall be made with S and drive cleats or equivalent mechanical connections. (6) Trunk supply ducts shall not be nailed directly to wood members. (7) Branch ducts shall be supported at suitable spacings to maintain alignment and prevent sagging. (8) Combustible ducts in concrete slabs-on-ground that are connected to a furnace supply plenum shall be located not closer than 600 mm to that plenum and not less than 600 mm from its connection to a riser or register. (9) Ducts in or beneath concrete slabs-on-ground shall be watertight, corrosion-, decay- and mildew-resistant. (10) Where a supply or return duct is not protected by an insulated exterior wall or where the duct is exposed to an unheated space it shall be insulated to provide a thermal resistance of not less than RSI 2.1.
6.2.4.4. Warm-Air Supply Outlets (1) In a dwelling unit, a warm-air supply outlet shall be provided in each finished room which is located adjacent to unheated space, exterior air or exterior soil. (2) Except as provided in Sentence (3), when a room described in Sentence (1) is located adjacent to exterior walls, such outlets shall be located so as to bathe not less than one exterior wall or window with warm air, except in bathrooms, utility rooms or kitchens, where this may not be practical. (3) Where the heating system is also designed to provide ventilation air, ceiling outlets or outlets located high on interior walls may be installed provided the outlets are (a) designed for this purpose, and (b) installed with diffusers. (4) Not less than one warm-air supply outlet shall be provided for each 40 m2 of floor surface area in unfinished basements serving dwelling units, located so as to provide adequate distribution of warm air throughout the basement. (5) Except for pipeless furnaces and floor furnaces, the capacity of warm-air supply outlets serving dwelling units shall be not less than the design heat loss from the area served and shall not exceed 3 kW per outlet. (6) In basements and heated crawl spaces, the calculated heat gain from the supply ducts and plenum surfaces may be considered in calculating the design heat loss. (7) Warm-air supply outlets located in finished areas shall be provided with diffusers and adjustable openings and shall not be located on a furnace plenum. (8) The temperature of supply air at the warm-air supply outlets shall not exceed 70°C. (9) Air duct systems serving storage garages shall not be interconnected with other parts of the building.
6.2.4.5. Concrete Slabs-on-Ground (1) Warm-air supply systems for buildings of residential occupancy built on concrete slabs-on-ground (a) shall be installed in the slab, and (b) shall be of the perimeter loop type or radial perimeter type.
6.2.4.6. Adjustable Dampers and Balance Stops (1) All branch supply ducts for residential systems shall be equipped with volume control dampers at the boot to permit balancing or shall be fitted with a diffuser incorporating an adjustable and lockable volume control device which can be set in a fixed position.
6.2.4.7. Return-Air System (1) The return-air system shall be designed to handle the entire air supply. (2) Except as provided in Sentences (3) and (4), return ducts shall be constructed of material having a surface flame-spread rating of not more than 150. (3) Where any part of a return duct will be exposed to radiation from the furnace heat exchanger or other radiating part within the furnace, such part of a return duct directly above or within 600 mm of the outside furnace casing shall be noncombustible. (4) Return ducts serving solid fuel-fired furnaces shall be constructed of noncombustible material. (5) Combustible return ducts shall be lined with noncombustible material below floor registers, at the bottom of vertical ducts and under furnaces having a bottom return. (6) Spaces between studs and joists used as return ducts shall be separated from the unused portions of such spaces by tight-fitting metal stops or wood blocking. (7) A vertical return duct shall have openings to return air on not more than 1 floor. (8) A public corridor shall comply with Sentences 6.2.3.10.(3) and (4). (9) The return-air system shall be designed so that the negative pressure from the circulating fan cannot affect the furnace combustion air supply nor draw combustion products from joints or openings in the furnace or flue pipe. (10) Return-air from a dwelling unit shall not be recirculated to any other dwelling unit. (11) Except for floor levels that are less than 900 mm above or below an adjacent floor level which is provided with a return-air inlet, at least one return-air inlet shall be provided in each floor level in a dwelling unit. (12) Provision shall be made for the return of air from all rooms by leaving gaps beneath doors, using louvred doors or installing return duct inlets.
6.2.4.8. Coverings, Linings and Insulation (1) Foamed plastic insulation may be used in a ceiling space that acts as a return air plenum provided the foamed plastic insulation is protected from exposure to the plenum in accordance with Article 3.1.5.11. (2) Linings of ducts shall be installed so that they will not interfere with the operation of volume or balancing dampers.
6.2.4.9. Tape (1) Tape used for sealing joints in air ducts, plenums and other parts of air duct systems shall meet the flame-resistance requirements for fabric in CAN/ULC-S109, “Standard for Flame Tests of Flame-Resistant Fabrics and Films”.
6.2.4.10. Clearances of Ducts and Plenums (1) Where the plenum clearance is 75 mm or less, the clearance between a supply duct and combustible material shall (a) be equal to the required plenum clearance within 450 mm of the plenum, and (b) be not less than 12 mm at a distance of 450 mm or more from the plenum, except that this clearance may be reduced to zero beyond a bend or offset in the duct sufficiently large to shield the remainder of the duct from direct radiation from the furnace heat exchanger. (2) Where the plenum clearance is more than 75 mm but not more than 150 mm, the clearance between a supply duct and combustible material shall (a) be equal to the required plenum clearance within a horizontal distance of 1 800 mm of the plenum, and (b) be not less than 12 mm at a horizontal distance of 1 800 mm or more from the plenum, except that this distance may be reduced to zero beyond a bend or offset in the duct sufficiently large to shield the remainder of the duct from direct radiation from the furnace heat exchanger. (3) Where the plenum clearance is more than 150 mm, the clearance between a supply duct and combustible material shall (a) be equal to the required plenum clearance within a horizontal distance of 1 000 mm of the plenum, (b) be not less than 150 mm within a horizontal distance between 1 000 mm and 1 800 mm from the plenum, and (c) be not less than 25 mm at a horizontal distance of 1 800 mm or more from the plenum, except that this distance may be reduced to 8 mm beyond a bend or offset in the duct sufficiently large to shield the remainder of the supply duct from direct radiation from the furnace heat exchanger. (4) Where a register is installed in a floor directly over a pipeless furnace, a double-walled register box with not less than 100 mm between walls, or a register box with the warm-air passage completely surrounded by the cold-air passage, shall be permitted in lieu of the clearances listed in Sentences (1), (2) and (3).
6.2.4.11. Exhaust Ducts and Outlets (1) Where an exhaust duct passes through or is adjacent to unheated space, the duct shall be insulated to prevent moisture or condensation in the duct. (2) Exhaust outlets shall be designed to prevent back draft under wind conditions. (3) Exhaust ducts directly connected to laundry drying equipment shall be independent of other exhaust ducts.
6.2.4.12. Make-up Air (1) In ventilating systems that exhaust air to the outdoors, provision shall be made for the admission of a supply of make-up air in sufficient quantity so that the operation of the exhaust system and other exhaust equipment or combustion equipment is not adversely affected. (2) Except as provided in Sentence (3), when electric resistance heating is used to temper make-up air required in Sentence (1) in buildings of residential occupancy within the scope of Part 9, the energy rating for windows and sliding glass doors shall conform to the requirements of Article 9.25.2.7. and the minimum thermal resistance of insulation to be installed shall conform to Column 4 of Table 9.25.2.7. (3) Sentence (2) does not apply where (a) electric space heating is provided, or (b) a heat recovery ventilator meeting the minimum rating requirements of Article 6.2.1.7. is installed.
6.2.4.13. Supply, Return, Intake and Exhaust Air Openings (1) Supply, return and exhaust air openings in rooms or spaces shall be protected by grilles having openings of a size that will not allow the passage of a 15 mm diameter sphere. (2) Outdoor air intakes and exhaust outlets at the building exterior shall be designed or located so that the air entering the building system will not contain more contaminants than the normal exterior air. (3) Exterior openings for outdoor air intakes and exhaust outlets shall be shielded from the entry of snow and rain and shall be fitted with corrosion-resistant screens of mesh not larger than 15 mm, except where climatic conditions may require larger openings. (4) Screens required in Sentence (3) shall be accessible for maintenance.
6.2.4.14. Air Filters and Equipment (1) Air filters for air duct systems shall conform to the requirements for Class 2 air filter units as described in CAN4-S111-M, “Standard Method of Fire Tests For Air Filter Units”. (2) When electrostatic-type filters are used, they shall be installed so as to ensure that the electric circuit is automatically de-energized when filter access doors are opened or when the system circulating fan is not operating. (3) When odour removal equipment of the adsorption type is used it shall be (a) installed to provide access so that adsorption material can be reactivated or renewed, and (b) protected from dust accumulation by air filters installed on the inlet side. 6.2.5.Heating Appliances, General
6.2.5.1. Location of Appliances (1) Except for appliances installed in dwelling units, fuel-fired heating appliances shall be located, enclosed or separated from the remainder of the building in conformance with Section 3.6.
6.2.5.2. Appliances Installed Outside the Building (1) Fuel-fired appliances installed on the roof of a building or otherwise outside the building shall be (a) designed for outdoor use, (b) installed not less than 1 200 mm from the property line, measured horizontally, and (c) installed not less than 3 m from an adjacent wall of the same building when such wall contains an opening or openings within 3 storeys above and 5 m horizontally from the appliance, unless such openings are protected by a closure assembly having a 45 min fire-protection rating determined in conformance with Article 3.1.8.4., or by wired glass conforming to Article 3.1.8.14. 6.2.5A. Carbon Monoxide Detectors
6.2.5A.1. Application (1) This subsection applies to every building that (a) contains a residential occupancy, and (b) contains a fuel-burning appliance or a storage garage.
6.2.5A.2. Location of Carbon Monoxide Detectors (1) Where a fuel-burning appliance is installed in a suite of residential occupancy, a carbon monoxide detector shall be installed adjacent to each sleeping area in the suite. (2) Where a fuel-burning appliance is installed in a service room that is not in a suite of residential occupancy, a carbon monoxide detector shall be installed (a) adjacent to each sleeping area in every suite of residential occupancy that is adjacent to the service room, and (b) in the service room. (3) Where a storage garage is located in a building containing a residential occupancy, a carbon monoxide detector shall be installed adjacent to each sleeping area in every suite of residential occupancy that is adjacent to the storage garage.
6.2.5A.3. Installation and Conformance to Standards (1) The carbon monoxide detector required by Article 6.2.5A.2. shall (a) be permanently connected to an electrical circuit and shall have no disconnect switch between the overcurrent device and the carbon monoxide detector, (b) be wired so that its activation will activate all carbon monoxide detectors within the suite, where located within a suite of residential occupancy, (c) be equipped with an alarm that is audible within bedrooms when the intervening doors are closed, where located in a suite of residential occupancy, and (d) conform to (i) CAN/CGA-6.19, “Residential Carbon Monoxide Detectors”, (ii) CSA 6.19, “Residential Carbon Monoxide Alarming Devices”, or (iii) UL 2034, “Single and Multiple Station Carbon Monoxide Detectors”. 6.2.6.Incinerators
6.2.6.1. Applicable Standard (1) The design, construction, installation and alteration of every indoor incinerator shall conform to NFPA 82, “Incinerators, Waste and Linen Handling Systems and Equipment”.
6.2.6.2. Venting (1) Every incinerator shall be served by a chimney flue conforming to Section 6.3. 6.2.7.Unit Heaters
6.2.7.1. Clearances (1) Every unit heater using either steam or hot water as the heating medium shall be installed with a clearance of not less than 25 mm between the appliance and adjacent combustible material. 6.2.8.Radiators and Convectors
6.2.8.1. Lining or Backing (1) Every steam or hot water radiator and convector located in a recess or concealed space or attached to the face of a wall of combustible construction shall be provided with a noncombustible lining or backing. 6.2.9.Piping for Heating and Cooling Systems
6.2.9.1. Piping Materials and Installation (1) Piping shall be made from materials designed to withstand the effects of temperatures and pressures that may occur in the system. (2) Every pipe used in a heating or air-conditioning system shall be installed to allow for expansion and contraction due to temperature changes. (3) Supports and anchors for piping in a heating or air-conditioning system shall be designed and installed to ensure that undue stress is not placed on the supporting structure.
6.2.9.2. Insulation and Coverings (1) Insulation and coverings on pipes shall be composed of material suitable for the operating temperature of the system to withstand deterioration from softening, melting, mildew and mould. (2) Insulation and coverings on pipes in which the temperature of the fluid exceeds 120°C (a) shall be made of noncombustible material, or (b) shall not flame, glow, smoulder or smoke when tested in accordance with the method of test ASTM C411, “Hot-Surface Performance of High-Temperature Thermal Insulation”, at the maximum temperature to which such insulation or covering is to be exposed in service. (3) Except as provided in Sentence (7), where combustible insulation is used on piping in a horizontal or vertical service space, the insulation and coverings on such pipes shall have a flame-spread rating throughout the material of not more than 25 in buildings of noncombustible construction and not more than 75 in buildings of combustible construction. (4) Except as provided in Sentence (7), insulation and coverings on piping located in rooms and spaces other than the service spaces described in Sentence (3) shall have a flame-spread rating of not more than that required for the interior finish for the ceiling of the room or space. (5) Except as provided in Sentence (7), where combustible insulation and covering is used on piping in buildings described in Subsection 3.2.6., they shall have a smoke developed classification of not more than 100. (6) Pipes that are exposed to human contact shall be insulated so that the exposed surface does not exceed 70°C. (7) No flame-spread rating or smoke developed classification limitations are required where combustible insulation and coverings are used on piping when such piping is (a) located within a concealed space in a wall, (b) located in a floor slab, or (c) enclosed in a noncombustible raceway or conduit.
6.2.9.3. Clearances (1) Clearances between combustible material and bare pipes carrying steam or hot water shall conform to Table 6.2.9.3. Table 6.2.9.3. Clearance between Steam or Hot Water Pipes and Combustible Material Forming Part of Sentence 6.2.9.3.(1)  Steam or Water Temperature, °C

Minimum Clearance, mm


up to 120

15


above 120

25


Column 1

2
6.2.9.4. Surface Temperature (1) The exposed surface temperature of a steam or hot water radiator shall not exceed 70°C unless precautions are taken to prevent human contact.
6.2.9.5. Protection (1) Where a pipe carrying steam or hot water at a temperature above 120°C passes through a combustible floor, ceiling or wall, the construction shall be protected by a sleeve of metal or other noncombustible material not less than 50 mm larger in diameter than the pipe. (2) Unprotected steam or hot water pipes that pass through a storage space shall be covered with not less than 25 mm of noncombustible insulation to prevent direct contact with the material stored.
6.2.9.6. Piping in Shafts (1) Where piping for heating or air-conditioning systems is enclosed in a shaft, the requirements of Article 3.6.3.1. for shafts shall apply. 6.2.10.Refrigerating Systems and Equipment for Air-Conditioning
6.2.10.1. Cooling Units (1) Where a cooling unit is combined with a fuel-fired furnace in the same duct system, the cooling unit shall be installed (a) in parallel with the heating furnace, (b) upstream of the furnace provided the furnace is designed for such application, or (c) downstream of the furnace provided the cooling unit is designed to prevent excessive temperature or pressure in the refrigeration system. 6.2.11.Storage Bins
6.2.11.1. Storage Bins (1) Service pipes passing through a storage bin for solid fuel shall be protected or so located as to avoid damage to the pipes. (2) Except for fuel-thawing pipes, every pipe designed to operate at a temperature of 50°C or above shall be located where fuel cannot be stored in contact with it. (3) A storage bin for solid fuel shall not be located above a sewer opening or drain opening. (4) Storage bins for solid fuel shall be designed and constructed so that the air temperature in the bin or the surface temperature of any part of the floor or walls is below 50°C.
6.2.11.2. Ash Storage Bins (1) Every ash storage bin shall be constructed of noncombustible material and, where the bin is not covered, the ceiling of the room in which it is located shall be of noncombustible material. (2) Every opening in an ash storage bin shall be protected by a tight-fitting metal door with metal frame securely fastened to the bin. Section 6.3.Chimneys and Venting Equipment 6.3.1.General
6.3.1.1. Requirement for Venting (1) Except as provided in Articles 6.3.1.2. and 6.3.1.3., the products of combustion from solid fuel-burning appliances shall be vented in conformance with the requirements in the applicable appliance installation standards listed in Article 6.2.1.5.
6.3.1.2. Masonry or Concrete Chimneys (1) Rectangular masonry or concrete chimneys not more than 12 m in height shall conform to Part 9 if they serve appliances with a combined total rated heat output of 120 kW or less, or that serve fireplaces. (2) Masonry or concrete chimneys other than those described in Sentence (1) shall be designed and installed in conformance with the appropriate requirements in NFPA 211, “Standard for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances”.
6.3.1.3. Metal Smoke Stacks (1) Single wall metal smoke stacks shall be designed and installed in conformance with NFPA 211, “Standard for Chimneys, Fireplaces, Vents and Solid Fuel-Burning Appliances”.
6.3.1.4. Reserved
6.3.1.5. Access Ladders (1) Access ladders for chimneys, when provided, shall consist of steel or bronze rungs, built into the walls of the chimneys. (2) Rungs for external ladders shall begin at not less than 2 500 mm from ground level. O. Reg. 403/97, Part 6; O. Reg. 283/01, s. 4. PART 7   PLUMBING  Section

7.1.

General


 

7.1.1.

Scope


 

7.1.2.

Application


 

7.1.3.

Definitions and Abbreviations


 

7.1.4.

Equivalents


 

7.1.5.

Plumbing Facilities


 

7.1.6.

Service Connections


 

7.1.7.

Location of Fixtures


 

 

 


Section

7.2.

Materials and Equipment


 

7.2.1.

General


 

7.2.2.

Fixtures


 

7.2.3.

Traps and Interceptors


 

7.2.4.

Pipe Fittings


 

7.2.5.

Non-Metallic Pipe and Fittings


 

7.2.6.

Ferrous Pipe and Fittings


 

7.2.7.

Non-Ferrous Pipe and Fittings


 

7.2.8.

Corrosion Resistant Materials


 

7.2.9.

Jointing Materials


 

7.2.10.

Miscellaneous Materials


 

7.2.11.

Water Service Pipes and Fire Service Mains


 

 

 


Section

7.3.

Piping


 

7.3.1.

Application


 

7.3.2.

Construction and Use of Joints


 

7.3.3.

Joints and Connections


 

7.3.4.

Support of Piping


 

7.3.5.

Protection of Piping


 

7.3.6.

Testing of Drainage and Venting Systems


 

7.3.7.

Testing of Potable Water Systems


 

 

 


Section

7.4.

Drainage Systems


 

7.4.1.

Application


 

7.4.2.

Connections to Drainage Systems


 

7.4.3.

Location of Fixtures


 

7.4.4.

Treatment of Sewage and Wastes


 

7.4.5.

Traps


 

7.4.6.

Arrangement of Drainage Piping


 

7.4.7.

Cleanouts


 

7.4.8.

Minimum Slope and Length of Drainage Pipes


 

7.4.9.

Size of Drainage Pipes


 

7.4.10.

Hydraulic Loads


 

 

 


Section

7.5.

Venting Systems


 

7.5.1.

Vent Pipes for Traps


 

7.5.2.

Stack Venting & Modified Stack Venting, Circuit Venting and Relief Venting


 

7.5.3.

Vent Pipes for Soil or Waste Stacks


 

7.5.4.

Miscellaneous Vent Pipes


 

7.5.5.

Arrangement of Vent Pipes


 

7.5.6.

Minimum Size of Vent Pipes


 

7.5.7.

Sizing of Vent Pipes


 

 

 


Section

7.6.

Potable Water Systems


 

7.6.1.

Arrangement of Piping


 

7.6.2.

Protection from Contamination


 

7.6.3.

Size and Capacity of Pipes


 

7.6.4.

Water Efficiency


 

7.6.5

Water Temperature Control


 

 

 


Section

7.7.

Non-Potable Water Systems


 

7.7.1.

Connection


 

7.7.2.

Identification


 

7.7.3.

Location PART 7   PLUMBING Section 7.1.General 7.1.1.Scope
7.1.1.1. Scope (1) The scope of this Part shall be as described in Section 2.1.
7.1.1.2. Industrial Systems (1) This Part does not apply to industrial process systems unless the industrial process system is interconnected with the plumbing system, in which case the interconnection shall be so designed and installed so that the plumbing system is protected against contamination or malfunction that may be caused by the industrial system. 7.1.2.Application
7.1.2.1. Application (1) This Part applies to the design and construction of plumbing.
7.1.2.2. Alteration or Repair (1) When an existing building is extended or subject to material alteration or repair, this Part is applicable (a) to the design and construction of plumbing in the extensions and those parts of the building subject to material alteration and repair, and (b) to plumbing which is adversely affected by the extension, alteration or repair. 7.1.3.Definitions and Abbreviations
7.1.3.1. Reserved
7.1.3.2. Definitions In Italics (1) In this Part, Storey means the interval between two successive floor levels including mezzanine floors that contain plumbing or between a floor level and roof.
7.1.3.3. Abbreviations of Names and Organizations (1) Reserved
7.1.3.4. Abbreviations of Words (1) Reserved 7.1.4.Equivalents (1) Reserved 7.1.5.Plumbing Facilities
7.1.5.1. Facilities Required (1) Plumbing facilities shall be provided in accordance with Subsection 3.7.4. and Section 9.31. of this Code.
7.1.5.2. Floor Drains (1) Where gravity drainage to a sanitary drainage system is possible, a floor drain shall be installed in a basement forming part of a dwelling unit. (2) Where gravity drainage to a sanitary drainage system is not possible, the floor drain required by Sentence (1) may be connected to a storm drainage system, dry well or drainage ditch provided it is located where it can receive only clear water waste or storm sewage. (3) A floor drain shall be provided in a public laundry room, garbage room, incinerator room, boiler or heating room, serving more than one dwelling unit. 7.1.6.Service Connections
7.1.6.1. Sanitary Drainage Systems (1) Every sanitary drainage system shall be connected to a public sanitary sewer, a public combined sewer or a private sewage disposal system. (2) A combined building drain or a combined building sewer shall not be installed.
7.1.6.2. Storm Drainage Systems (1) Every storm drainage system shall be connected to a public storm sewage works, a public combined sewage works or a designated storm water disposal location but shall not be connected to a sanitary sewage works.
7.1.6.3. Water Distribution Systems (1) Except as provided in Sentence (2), every water distribution system shall be connected (a) to a watermain that is part of a municipal drinking-water system, or (b) to a drinking-water system, if a watermain described in Clause (a) is not available. (2) Storm sewage or greywater that is free of solids may be used for the flushing of water closets, urinals or the priming of traps. (3) Piping conveying the non-potable water described in Sentence (2) shall be installed in conformance with Section 7.7.
7.1.6.4. Separate Services (1) Piping in any building shall be connected to the public services separately from piping of any other building, except that an ancillary building on the same property may be served by the same service. (2) No plumbing serving a dwelling unit shall be installed under another unit of the building unless the piping is located in a tunnel, pipe corridor, common basement or parking garage, so that the piping is accessible for servicing and maintenance throughout its length without encroachment on any private living space, but this Sentence does not prevent plumbing serving a unit located above another unit from being installed in or under the lower unit.
7.1.6.5. Private Sewers and Private Water Supply (1) Private sewers and private water supply pipes shall be installed according to the Guidelines for the Design of Sanitary Sewage Work Systems, Guidelines for the Design of Storm Sewers and Guidelines for the Design of Water Distribution Systems issued by the Environmental Approvals and Projects Engineering Branch of the Ministry of the Environment. 7.1.7.Location of Fixtures
7.1.7.1. Lighting and Ventilation Requirements (1) Plumbing fixtures shall not be installed in a room that is not lighted and ventilated in accordance with the appropriate requirements in Parts 3 and 9.
7.1.7.2. Accessibility (1) Every fixture, plumbing appliance, interceptor, cleanout, valve, device or piece of equipment shall be so located that it is readily accessible for use, cleaning and maintenance. (2) Except for Eastern-Style toilets, where 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. Section7.2.Materials and Equipment 7.2.1.General
7.2.1.1. Reserved
7.2.1.2. Exposure of Materials (1) Where unusual conditions exist such as excessively corrosive soil or water, only materials suited for use in such locations shall be used. (2) Materials and equipment used in a drainage system where excessively corrosive wastes are present shall be suitable for the purpose.
7.2.1.3. Restrictions on Re-Use (1) Used materials and equipment, including fixtures, shall not be reused unless they meet the requirements of this Part for new materials and equipment and are otherwise satisfactory for their intended use. (2) Materials 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.
7.2.1.4. Identification and Certification (1) Every length of pipe and every fitting shall 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 it shall be marked in accordance with the relevant standard, and such markings shall be visible after installation. (2) Where a component of a plumbing system is required by this Code to comply with a standard and the compliance is not certified by a testing agency accredited by the Standards Council of Canada for the testing of the component in question and, when an inspector requests proof of the compliance, proof of compliance shall be produced by the person proposing to install or have installed the component, and without such proof the component shall not be installed as a permanent part of any plumbing system. (3) The lack of certification markings on a product or plumbing component shall be regarded as proof, in the absence of evidence to the contrary that no certification exists. (4) If a component of a plumbing system is required to be certified to a standard, the certification shall be made by a testing agency accredited for that purpose by the Standards Council of Canada.
7.2.1.5. Pipe or Piping (1) Where the term pipe or piping and fittings is used, it shall also apply to tube or tubing and fittings unless otherwise stated.
7.2.1.6. Withstanding Pressure (1) Piping, 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. 7.2.2.Fixtures
7.2.2.1. Surface Requirements (1) Except for the area designed to be slip proof in such fixtures, every exposed area of a fixture shall have a smooth, hard corrosion-resistant surface that is free from flaws and blemishes that may interfere with cleaning.
7.2.2.2. Reserved
7.2.2.3. Showers (1) Every shower receptor shall be constructed and arranged so that water cannot leak through the walls or floor. (2) Not more than 6 shower heads shall be served by a single shower drain. (3) Where two 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. (4) Except for column showers, when a battery of shower heads is installed, the horizontal distance between two adjacent shower heads shall be at least 750 mm.
7.2.2.4. Concealed Overflows (1) A dishwashing sink and a food preparation sink shall not have concealed overflows.
7.2.2.5. Lavatories (1) A lavatory that does not have an overflow shall be equipped with a centre outlet waste fitting.
7.2.2.6. Trough Urinals (1) No trough urinal shall be used as part of a plumbing system. 7.2.3.Traps and Interceptors
7.2.3.1. Traps (1) Except as provided for in Sentence (2), every trap shall (a) have a trap seal depth of at least 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. (2) The trap seal depth on fixtures draining to an acid waste system shall be a minimum of 50 mm. (3) Every trap that serves a lavatory, a sink or a laundry tray shall (a) be provided with a cleanout plug of a minimum 3/4 in. size 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 completely removed by screwed connections for cleaning purposes. (4) A bell trap or an S-trap shall not be installed in a drainage system. (5) A drum trap shall not be installed in a drainage system. (6) Except as permitted in Sentence (7), no bottle trap shall be used in a plumbing system. (7) A bottle trap may be used on a laboratory sink or other fixture equipped with corrosion resistant fittings. (8) No running trap shall be installed in a plumbing system unless an accessible handhole is provided for cleaning of the trap, and where the trap is too small to accommodate a handhole, a cleanout shall be provided.
7.2.3.2. Interceptors (1) Every interceptor shall be designed so that it can be readily cleaned. (2) Every grease interceptor shall be designed so that it does not become air bound.
7.2.3.3. Tubular Traps (1) Tubular metal or plastic traps that conform to CAN/CSA-B125, “Plumbing Fittings” shall be used in accessible locations. 7.2.4.Pipe Fittings
7.2.4.1. T and Cross Fittings (1) A T fitting shall not be used in a drainage system except to connect a vent pipe. (2) A cross fitting shall not be used in a drainage system.
7.2.4.2. Sanitary T Fittings (1) Reserved (2) A double sanitary T fitting shall not be used to connect the fixture drains of two urinals where no cleanout fitting is provided above the connection. (3) No pipe fitting, joint or connection that would tend to intercept solids or reduce the flow through a pipe by more than 10% shall be used in a plumbing system.
7.2.4.3. One-Quarter Bends (1) Except as permitted in Sentence (3), a 1/4 bend of 4 in. size or less that has a centre-line radius that is less than the size of the pipe shall not be used to join two soil or waste pipes. (2) A 1/4 bend of 4 in. size or less shall not be used on a horizontal building drain, a branch of the building drain, or building sewer except to change direction from horizontal to vertical. (3) A 1/4 bend that is part of a pre-engineered wastewater heat recovery system is permitted to have a centre-line radius that is less than the size of the pipe.
7.2.4.4. Fittings Restricted in Use (1) No double Y, double TY, double T or double waste fitting shall be installed in a nominally horizontal soil or waste pipe.
7.2.4.5. Assembled Pipe or Tubing (1) Pipe or tubing assembled to comprise a standard drain waste and venting system shall be connected with drain, waste and vent fittings in conformance with Table 7.2.4.5. Table 7.2.4.5. Pipe Arrangement for DWV Fittings Forming Part of Sentence 7.2.4.5.(1)  7.2.5.Non-Metallic Pipe and Fittings
7.2.5.1. Asbestos-Cement Drainage Pipe and Fittings (1) Except 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, “Pipe, Asbestos-Cement, Drain”, or (b) CSA B127.1, “Components for Use in Asbestos Cement Drain, Waste and Vent Systems”. (2) Asbestos-cement pipe and fittings used underground either outside a building or under a building shall conform to Sentence (1) or to (a) CAN/CGSB-34.9, “Pipe, Asbestos-Cement, Sewer”, (b) CAN/CGSB-34.23, “Pipe, Asbestos-Cement, Sewer, House Connection”, or (c) CSA B127.2, “Components for Use in Asbestos-Cement Building Sewer Systems”.
7.2.5.2. Reserved
7.2.5.3. Concrete Pipe and Fittings (1) Concrete pipe shall conform to CSA A257 Series, “Standards for Circular Concrete Pipe and Manholes”. (2) Reserved (3) Joints with external elastomeric gaskets shall be made with corrosion resistant external band type flexible mechanical couplings that conform to CAN/CSA-B602, “Mechanical Couplings for Drain, Waste, and Vent Pipe and Sewer Pipe”. (4) Concrete fittings field fabricated from lengths of pipe shall not be used. (5) Concrete pipe shall not be used above ground inside a building. (6) Precast reinforced circular concrete manhole sections, catch basins and fittings shall conform to CAN/CSA-A257.4-M, “Precast Reinforced Circular Concrete Manhole Sections, Catch Basins, and Fittings”.
7.2.5.4. Vitrified Clay Pipe and Fittings (1) Vitrified clay pipe and fittings shall be certified to CSA A60.1, “Vitrified Clay Pipe”. (2) Couplings and joints for vitrified clay pipe shall be certified to CSA A60.3, “Vitrified Clay Pipe Joints”. (3) Vitrified clay pipe and fittings shall not be used except for an underground part of a drainage system.
7.2.5.5. Polyethylene Water Pipe and Fittings (1) Polyethylene water pipe and fittings shall be certified to CAN/CSA-B137.1, “Polyethylene Pipe, Tubing and Fittings for Cold Water Pressure Services”, Series 160, and shall have a rated working pressure of 1034 kPa or more. (2) Except as permitted in Sentence (4), polyethylene water pipe or tube shall only be used in underground installations of cold water distributing pipe. (3) Butt fusion fittings for polyethylene pipe shall conform to ASTM D3261, “Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing”. (4) Cross-linked polyethylene pressure pipe or tube and fittings used in above-ground or underground installations of water distributing pipe shall be certified to CAN/CSA-B137.5, “Cross-linked Polyethylene (PEX) Tubing Systems for Pressure Applications”.
7.2.5.6. PVC Pipe and Fittings (1) PVC water pipe, fittings and solvent cement shall be certified to CAN/CSA-B137.3, “Rigid Poly (Vinyl Chloride) (PVC) Pipe for Pressure Applications” or CAN/CSA-B137.2, “PVC Injection-Moulded Gasketed Fittings for Pressure Applications”, and have a minimum pressure rating of 1034 kPa. (2) PVC water pipe and fittings in Sentence (1) shall not be used in a hot water system.
7.2.5.7. CPVC Pipe, Fittings and Solvent Cements (1) CPVC hot and cold water pipe, fittings and solvent cements shall be certified to CSA B137.6, “CPVC Pipe, Tubing and Fittings for Hot and Cold Water Distribution Systems”. (2) The design temperature and design pressure of a CPVC piping system shall conform to the Standard referenced in Sentence (1).
7.2.5.8. Polybutylene Pipe and Fittings (1) Polybutylene pipe and its associated fittings shall be certified to CAN3-B137.8, “Polybutylene (PB) Piping for Pressure Applications”. (2) Polybutylene pipe and fittings shall not be used for a continuously circulating hot water line or the first metre of any branch off of the continuously circulating hot water line.
7.2.5.9. Plastic Pipe, Fittings and Solvent Cement Used Underground (1) Plastic pipe, fittings and solvent cement used underground outside a building or under a building in a drainage system shall be certified to (a) CAN/CSA-B181.1, “ABS Drain, Waste, and Vent Pipe and Pipe Fittings”, (b) CAN/CSA-B181.2, “PVC Drain, Waste, and Vent Pipe and Pipe Fittings”, (c) CAN/CSA-B182.1, “Plastic Drain and Sewer Pipe and Pipe Fittings”, (d) CAN/CSA-B182.2, “PVC Sewer Pipe and Fittings, (PSM Type)”, (e) CAN/CSA-B182.4, “Profile (Ribbed) PVC Sewer Pipe and Fittings”, (f) CAN/CSA-B182.6, “Profile Polyethylene Sewer Pipe and Fittings”, (g) CAN/CSA-B137.2, “PVC Injection-Moulded Gasketed Fittings for Pressure Applications”, or (h) CAN/CSA-B137.3, “Rigid Poly (Vinyl Chloride) (PVC) Pipe for Pressure Applications”. (2) Except as permitted in Clauses (g) and (h), plastic pipe used as described in Sentence (1) shall have a stiffness equal or greater than 320 kPa.
7.2.5.10. Plastic Pipe, Fittings and Solvent Cement Used in Buildings (1) Plastic pipe, fittings and solvent cement used inside or under a building in a sanitary drainage system or venting system shall be certified to (a) CAN/CSA-B181.1, “ABS Drain, Waste, and Vent Pipe and Pipe Fittings”, or (b) CAN/CSA-B181.2, “PVC Drain, Waste, and Vent Pipe and Pipe Fittings”. (2) Plastic pipe, fittings and solvent cement used inside a building in a storm drainage system shall be certified to (a) CAN/CSA-B181.1, “ABS Drain, Waste, and Vent Pipe and Pipe Fittings”, (b) CAN/CSA-B181.2, “PVC Drain, Waste, and Vent Pipe and Pipe Fittings”, (c) CAN/CSA-B182.1, “Plastic Drain and Sewer Pipe and Pipe Fittings”, or (d) CAN/CSA-B182.2, “PVC Sewer Pipe and Fittings, (PSM Type)”. (3) Plastic pipe used as described in Sentence (2) shall have a pipe stiffness equal or greater than 320 kPa. (4) Requirements for combustible piping in relation to fire safety shall conform to Articles 3.1.5.15., 3.1.9.4., 9.10.9.6. and 9.10.9.7. of this Code. (5) Where noncombustible piping pierces a fire separation or a fire stop, the requirements for fire stopping of Subsection 3.1.9., Articles 9.10.9.6. and 9.10.15.4. shall apply.
7.2.5.11. Transition Solvent Cement (1) Solvent cement for transition joints shall conform to (a) CAN/CSA-B181.1, “ABS Drain, Waste, and Vent Pipe and Pipe Fittings”, or (b) CAN/CSA-B181.2, “PVC Drain, Waste, and Vent Pipe and Pipe Fittings”. (2) Transition solvent cement shall only be used for joining an ABS plumbing system to a PVC plumbing system.
7.2.5.12. Polyethylene/Aluminum/Polyethylene Composite Pipe and Fittings (1) PE/AL/PE composite pipe and fittings used for potable water systems shall conform to CAN/CSA-B137.9, “Polyethylene/Aluminum/Polyethylene Composite Pressure Pipe Systems”. (2) PE/AL/PE pipe and fittings shall not be used in a hot water system.
7.2.5.13. Crosslinked Polyethylene/Aluminum/Polyethylene Composite Pipe and Fittings (1) PEX/AL/PEX composite pipe and fittings used for potable water systems shall conform to CAN/CSA-B137.10, “Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene Composite Pressure Pipe Systems”.
7.2.5.14. Polypropylene Pipe and Fittings (1) Polypropylene pipe and fittings used for hot and cold potable water systems shall conform to CSA-B137.11, “Polypropylene (PP-R) Pipe and Fittings for Pressure Applications”. 7.2.6.Ferrous Pipe and Fittings
7.2.6.1. Cast Iron Drainage and Vent Pipe and Fittings (1) Drainage piping, vent piping and fittings made of cast iron shall be certified to CSA B70, “Cast Iron Soil Pipe, Fittings and Means of Joining”. (2) Cast iron soil pipe and fittings shall not be used in a water system.
7.2.6.2. Cast Iron Fittings for Asbestos-Cement Drainage Pipe (1) Cast iron fittings designed for use with asbestos-cement pipe for drainage purposes shall conform to the applicable requirements of CSA B127.1, “Components for Use in Asbestos Cement Drain, Waste and Vent Systems” or CSA B127.2, “Components for Use in Asbestos Cement Building Sewer Systems”.
7.2.6.3. Threaded Cast Iron Drainage Fittings (1) Threaded cast iron drainage fittings shall conform to ANSI B16.12, “Cast Iron Threaded Drainage Fittings”. (2) Threaded cast iron drainage fittings shall not be used in a water system.
7.2.6.4. Cast Iron Water Pipe (1) Cast iron water pipes shall conform to ANSI/AWWA C151/A21.51, “Ductile-Iron Pipe, Centrifugally Cast in Metal Molds or Sand-Lined Molds, for Water or Other Liquids”. (2) Cement mortar lining for cast iron water pipes shall conform to ANSI/AWWA C104/A21.4, “Cement-Mortar Lining for Ductile-Iron and Gray-Iron Pipe and Fittings for Water”. (3) Iron fittings for cast iron or ductile-iron water pipes shall conform to ANSI/AWWA C110/A21.10, “Ductile-Iron and Gray-Iron Fittings, 3-in. Through 48-in., for Water and Other Liquids”. (4) Rubber gasket joints for cast iron and ductile-iron pressure pipe for water piping shall conform to ANSI/AWWA C111/A21.11, “Rubber-Gasket Joints for Ductile-Iron and Gray-Iron Pressure Pipe and Fittings”.
7.2.6.5. Screwed Cast Iron Water Fittings (1) Screwed cast iron water fittings shall conform to ANSI B16.4, “Cast Iron Threaded Fittings (Classes 125 and 250)”. (2) Screwed cast iron water fittings used in a water system shall be cement-mortar lined or galvanized. (3) Screwed cast iron water fittings shall not be used in a drainage system.
7.2.6.6. Screwed Malleable Iron Water Fittings (1) Screwed malleable iron water fittings shall conform to ANSI B16.3, “Malleable Iron Threaded Fittings (Classes 150 and 300)”. (2) Screwed malleable iron water fittings used in a water system shall be cement-mortar lined or galvanized. (3) Screwed malleable iron water fittings shall not be used in a drainage system.
7.2.6.7. Steel Pipe (1) Except as provided in Sentences (2) and (3), welded and seamless steel pipe shall not be used in a plumbing system. (2) Galvanized steel pipe may 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, or (b) for the repair of existing galvanized steel piping systems. (4) Galvanized steel pipe and fittings shall conform to ASTM A53, “Pipe, Steel, Black and Hot Dipped, Zinc-Coated Welded and Seamless”. (5) Where galvanized steel pipe is used in a drainage system, it shall be used with drainage fittings. (6) All steel pipe of 4 in. size and smaller shall be schedule 40 or heavier and fittings of less than 2 in. size shall be galvanized screw fittings.
7.2.6.8. Corrugated Steel Pipe and Couplings (1) Corrugated steel pipe and couplings shall be certified to CAN3-G401, “Corrugated Steel Pipe Products”. (2) Corrugated steel pipe shall only be used underground outside a building in a storm drainage system. (3) Couplings 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.
7.2.6.9. Sheet Metal Leaders (1) A sheet metal leader shall not be used except above ground outside a building. 7.2.7.Non-Ferrous Pipe and Fittings
7.2.7.1. Copper and Brass Pipe (1) Copper pipe shall conform to ASTM B42, “Seamless Copper Pipe, Standard Sizes”. (2) Brass pipe shall conform to ASTM B43, “Seamless Red Brass Pipe, Standard Sizes”.
7.2.7.2. Brass or Bronze Pipe Flanges and Flanged Fittings (1) Brass or bronze pipe flanges and flanged fittings shall conform to ANSI B16.24, “Bronze Pipe Flanges and Flanged Fittings (Class 150 and 300)”.