335.1. Access to pits: The work area shall be delimited to prevent access to the pits by persons not working in them by installing a fixed barrier at least 0,7 m in height, at a minimum distance of 1 metre around the pit, or a warning line complying with section 354.1. A sign prohibiting access to all, except for authorized personnel, shall also be posted near the access points.
If it is impossible to install a barrier or a warning line, a guardrail around the pit, a cover or a wire fence whose strength complies with that provided for in subparagraph 4 of the first paragraph of section 14 shall be installed to eliminate the risk of falling.
1411-2018O.C. 1411-2018, s. 241.