MarkhamBuilding InspectionsInspections

Floor Numbering and Identification of Stair Shafts

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: Floor Numbering Non-Housing
For: designer
Building types: All building types
Pages: 3
Instruments: NFPA 13, Standard for the Installation of Sprinkler Systems · NFPA 96, Standard for the Ventilation Control and Protection of Commercial Cooking Operations

Overview

Builder Tip No. 32 of the City of Markham, dated January 1, 2025 and updated to the 2024 OBC, linked as Floor Numbering Non-Housing among the City's non-housing tips under the 2024 Ontario Building Code. It quotes Article 3.4.6.19. on tactile Arabic floor numerals and upper-case stair letters at exit stair doors and Sentence 3.2.4.8.(2) on fire alarm annunciator zones. Its objective lines up floor numbers, stair designations, fire alarm zones and elevator buttons, replacing a Ground Floor label with the numeral 1 and adding compass points to stair zones.

What it covers

3.4.6.19. Floor Numbering and Identification of Stair Shafts
3.2.4.8. Annunciator and Zone Indication
Objective

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