Code Library › Volume 1 › Section 3.3 — Safety Within Floor Areas (See Note A-3.3.)
PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code

3.3.2.12.Bleachers

(1) Steps provided in aisles of bleachers of the telescopic type shall (a) have risers not more than 250 mm high, and (b) have treads with a run not less than 280 mm. (2) If the vertical distance between seating platforms in bleachers is more than 280 mm, an intermediate step shall be provided the full width of the aisle and proportioned to provide 2 equal risers between platforms. (3) If the vertical distance between seating platforms in bleachers is more than 450 mm, 2 intermediate steps shall be provided the full width of the aisle so that there are 3 equal risers between platforms. (4) If the passageway between rows of seats is not a closed deck, footboards shall be provided so that (a) the total width of the footboards shall be not less than three-quarters of the centre-to-centre spacing between rows of seats, and (b) the spacing between footboard members shall be not more than 25 mm. (5) Openings above footboards and below the seats in rows of bleacher seats shall be provided with intermediate construction so that there is no opening that would permit the passage of a sphere of more than 100 mm in diameter.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.