The Ontario Building Code | Ergonomic Design
9.8.7.5. Ergonomic design
(1) A clearance of not less than 50 mm shall be provided between a handrail and any surface behind it.
(2) All handrails shall be constructed so as to be continually graspable along their entire length with no obstruction on or above them to break a handhold, except where the handrail is interrupted by newels at changes in direction.
In Plain Language
Handrails must have an ergonomic design, meaning a shape and size that's comfortable and secure to grip, as set out in this article.
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.