Div. B › Part 3 › 3.2 › 3.2.3 — Spatial Separation and Exposure Protection

3.2.3.5 — Wall with Limiting Distance Less Than 1.2 m

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(1) Openings in a wall that has a limiting distance less than 1.2 m shall be protected by closures whose fire-protection rating is in conformance with the fire-resistance rating required for the wall.

(2) Wired glass or glass block shall not be used for a closure referred to in Sentence (1).

OBC Definitions

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closure

means a device or assembly for closing an opening through a fire separation or an exterior wall, such as a door, a shutter, a damper, wired glass and glass block, and includes all components such as hardware, closing devices, frames and anchors.

fire-protection rating

means the time in minutes or hours that a closure will withstand the passage of flame when exposed to fire under specified conditions of test and performance criteria, or as otherwise prescribed in this Code.

fire-resistance rating

means the time in minutes or hours that a material or assembly of materials will withstand the passage of flame and the transmission of heat when exposed to fire under specified conditions of test and performance criteria, or as determined by extension or interpretation of information derived from that test and performance as prescribed in this Code.

limiting distance

means the distance from an exposing building face to a property line, to the centre line of a street, lane or public thoroughfare or to an imaginary line between two buildings or fire compartments on the same property, measured at right angles to the exposing building face.

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