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OBC DIVISION B · PART 3 · SECTION 3.13 — RAPID TRANSIT STATIONS

What fire safety systems are required in rapid transit stations in Ontario?

Section 3.13 requires transit stations to have fire alarm and detection systems, emergency ventilation and smoke control suited to below-grade conditions, standpipes and water supply for firefighting, emergency lighting and power, and noncombustible construction with limited combustible finishes.

Code reference
Rapid transit stations must be provided with fire protection appropriate to enclosed and underground transit conditions, including detection and alarm systems, ventilation capable of managing smoke in station and tunnel spaces, firefighting infrastructure such as standpipes, emergency lighting and power supplies, and construction and finish materials restricted to limit fire growth and smoke production.
OBC Division B, Section 3.13 (Rapid Transit Stations)

Paraphrased for clarity — open this provision in the BUILDAiD Library for the exact wording.

What this means in practice

Underground stations cannot rely on windows, natural venting or quick fire department access, so engineered smoke management does the heavy lifting: fans that control smoke movement in stations and adjoining tunnels and keep egress paths tenable. Material restrictions matter more than in ordinary buildings; smoke from burning finishes is a primary killer, so flame spread and smoke developed limits are tight. Coordinate closely with the transit agency's fire life safety criteria, tunnel ventilation modelling, and fire department access and communication provisions, which drive significant space and cost.

Plain language

Underground stations need serious fire systems: alarms, giant fans that push smoke away from escape routes, water pipes for firefighters, and backup lighting. The materials inside are chosen so they do not burn easily or make thick smoke.

Related questions

When does OBC Section 3.13 apply to rapid transit stations in Ontario?What are the egress requirements for transit station platforms in Ontario?Do rapid transit stations in Ontario have to be accessible?

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This page is provided for general information. Building code requirements depend on your specific project, occupancy and municipality, and code editions change. Always verify requirements against the current Ontario Building Code and confirm with your local building department.