3.1.9.2 — Combustibility of Service Penetrations

(1) Optical fibre cables and electrical wires and cables in totally enclosed noncombustible raceways are permitted to penetrate an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required by Article 3.1.9.2. (2) Except as permitted by Sentence (3), totally enclosed nonmetallic raceways conforming to Article 3.1.5.20., optical fibre cables, and electrical wires and cables, single or grouped, with combustible insulation, jackets or sheathes that conform to the requirements of Clause 3.1.5.18. (1)(a) and that are not installed in totally enclosed noncombustible raceways are permitted to penetrate an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required by Article 3.1.9.2., provided the overall diameter of the single or grouped wires or cables, or the raceways is not more than 25 mm. (3) Single conductor metal sheathed cables with combustible jacketing that are more than 25 mm in overall diameter are permitted to penetrate a fire separation required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required by Article 3.1.9.2., provided the cables are not grouped and are spaced a minimum of 300 mm apart. (4) Combustible totally enclosed raceways that are embedded in a concrete floor slab are permitted in an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required by Article 3.1.9.2., provided the concrete cover between the raceway and the bottom of the slab is not less than 50 mm. (5) Combustible electrical outlet boxes are permitted in an assembly required to have a fire-resistance rating without being incorporated in the assembly at the time of testing as required by Article 3.1.9.2., provided the opening through the membrane into the box is not more than 160 cm2. (6) Revoked: O. Reg. 762/20, s. 4. (7) Revoked: O. Reg. 762/20, s. 4.

(1) Except as permitted by Sentences (3) to (8), combustible piping shall not be used if any part of the piping system penetrates, (a) a fire separation required to have a fire-resistance rating, or (b) a membrane that forms part of an assembly required to have a fire-resistance rating. (2) Combustible piping that is part of a system described in Sentence (1) shall not be located in a vertical service space. (3) Except as provided by Sentences (4) to (7), combustible piping is permitted to penetrate a fire separation required to have a fire-resistance rating or is permitted to penetrate a membrane that forms part of an assembly required to have a fire-resistance rating, provided the piping is sealed at the penetration by a fire stop that has an F rating not less than the fire-resistance rating required for the fire separation when subjected to the fire test method in CAN/ULC-S115, “Fire Tests of Firestop Systems”, with a pressure differential of 50 Pa between the exposed and unexposed sides, with the higher pressure on the exposed side. (4) Except as required by Sentence (7), combustible drain piping is permitted to penetrate a horizontal fire separation, provided it leads directly from a noncombustible water closet through a concrete floor slab and the piping is sealed at the penetration by a fire stop in conformance with Clause 3.1.9.1. (1)(a). (5) Except as required by Sentence (7), combustible piping is permitted to penetrate a vertical or horizontal fire separation, provided the fire compartments on each side of the fire separation are sprinklered and the piping is sealed at the penetration by a fire stop in conformance with Clause 3.1.9.1. (1)(a). (6) Except as required by Sentence (7), combustible piping not more than 25 mm in diameter containing chlorine gas is permitted to penetrate a fire separation between a chlorine gas service room built in conjunction with a public pool or public spa and the remainder of the building, provided the piping is sealed at the penetration by a fire stop in conformance with Clause 3.1.9.1. (1)(a). (7) Where combustible piping penetrates a firewall or a horizontal fire separation described in Sentence 3.2.1.2. (1), the piping shall be sealed at the penetration by a fire stop that has an FT rating not less than the fire-resistance rating required for the firewall or horizontal fire separation when subjected to the fire test method in CAN/ULC-S115, “Fire Tests of Firestop Systems”, and, (a) the fire stop shall have been tested with a pressure differential of 50 Pa between the exposed and unexposed sides, with the higher pressure on the exposed side, or (b) the fire compartments on each side of the firewall or horizontal fire separation shall be sprinklered. (8) Combustible piping for central vacuum cleaning systems is permitted to penetrate a fire separation, provided the installation conforms to the requirements that apply to combustible piping specified in Sentence (3).