MarkhamBuilding InspectionsInspections
Combustible Piping Penetration Of Fire Separations
Published by City of Markham
This is the City of Markham’s document, as published on its website on 18 October 2026. The municipality may have changed it since: check the current version at the source. Legal notice
- Type
- Guide
- Published by
- City of Markham
- Date
- January 1, 2025
- Also called
- Combustible Piping Penetration of Fire Separations
- For
- contractor
- Building types
- All building types
- Pages
- 2
- Instruments
- CAN/ULC-S115, Standard Method of Fire Tests of Firestop Systems
Overview
The City of Markham's Builder Tip No. 33, dated January 1, 2025 and updated to the 2024 OBC, filed with the non-housing tips under the 2024 Ontario Building Code beside its tip on combustible piping. It quotes Article 3.1.9.4., Combustible Piping Penetrations, on sprinkler and water distribution piping, drain, waste and vent piping sealed by firestops with an F rating to CAN/ULC-S115, the 50 Pa pressure differential above 3 storeys, vertical service spaces, and transitions between combustible and noncombustible piping. Its objective covers pipes leaving a shaft.
What it covers
- 3.1.9.4. Combustible Piping Penetrations
- Objective
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