The Ontario Building Code | Guards Designed Not to Facilitate Climbing
9.8.8.6. Guards designed Not to Facilitate Climbing
(1) Guards required by Article 9.8.8.1., except those in industrial occupancies and where it can be shown that the location and size of openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings do not represent a hazard, shall be designed so that no member, attachment or opening located between 140 mm and 900 mm above the floor or walking surface protected by the guardwill facilitate climbing.
In Plain Language
Guards must be designed so their horizontal or diagonal members don't create an easy ladder-like climbing pattern, as set out in this article, reducing the risk of a child climbing over.
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.