The Ontario Building Code | Bleachers
4.1.5.12. Bleachers
(1) Bleacher seats shall be designed for a uniformly distributed live load of 1.75 kN for each linear metre or for a concentrated load of 2.2 kN distributed over a length of 750 mm, whichever produces the most critical effect on the supporting members.
(2) Bleachers shall be checked by the erector after erection to ensure that all structural members, including bracing specified in the design, have been installed.
(3) Telescopic bleachers shall be provided with locking devices to ensure stability while in use.
In Plain Language
Bleacher seats must be designed for a uniformly distributed live load of 1.75 kilonewtons per linear metre or a concentrated load of 2.2 kilonewtons over a 750 mm length, whichever produces the more demanding structural effect.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.