The Ontario Building Code | Guards over Retaining Walls
4.4.3.1. Guards over Retaining walls
(1) Every retaining wall that is designated in Sentence 1.3.1.1.(1) of Division A shall be protected by guards on all open sides where the public has access to open space at the top of the retaining wall.
4.4.4. Anchor Systems on building Exterior
In Plain Language
Every retaining wall meeting the height and other criteria set out in Division A must be protected by guards on all open sides where a fall hazard exists, applying the Code's general fall-protection principle to retaining walls specifically.
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.