MarkhamBuilding InspectionsInspections

Sequencing For Modified Fire Alarm Systems

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: Map
Published by: City of Markham
Date: January 1, 2025
Also called: Sequencing for Modified Fire Alarm Systems
For: designer
Building types: All building types
Pages: 5

Overview

Markham's five-page Builder Tip No. 89, dated January 1, 2025 and updated to the 2024 OBC, on fire alarm sequencing in complexes with more than one tower, filed with the City's non-housing tips under the 2024 Ontario Building Code. It quotes Articles 3.2.4.3. and 3.2.4.4. on single-stage and 2-stage systems. Its objective treats modified systems as an alternative solution under Division C, Part 2, alerting shared parking and amenities, and voice announcements, then gives a sequence chart for two towers with signaling, elevator recall and fan functions.

What it covers

3.2.4.3. Types of Fire Alarm Systems
3.2.4.4. Description of Fire Alarm Systems
Objective

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