S-2.1, r. 13 - Regulation respecting occupational health and safety

Full text
33. Operating conditions: Scaffolds shall be designed for the type of work to be performed and the probable risks. They shall meet the following conditions:
(1)  be so designed, constructed, trussed, braced and maintained as to support any loads and stresses they may be subjected to, and resist wind action;
(2)  have a safety factor of at least 4 for each constituent element;
(3)  rest on firm ground or foundations;
(4)  be provided with guardrails when workers are exposed to a danger of falling more than 3 m.
The guardrails of the scaffolds may be temporarily removed if they prevent the carrying out of work that cannot reasonably be performed otherwise. In these cases, the wearing of a safety harness is compulsory for the worker and the worksite shall be marked off to prevent access to those persons not working there.
O.C. 885-2001, s. 33.