Acts and Regulations

91-191 - General

Section 181
Disposition versions

Full text
Shoring, bracing or caging of walls
181(1)An employer shall ensure that the walls of an excavation or trench are supported by shoring, bracing or caging except when the excavation or trench
(a) is less than 1.2 m deep,
(b) subject to subsection (2), is cut in solid rock,
(c) is sloped or benched to within 1.2 m of the bottom of the excavation or trench with the slope or bench not exceeding 1 m of vertical rise to each 1 m of horizontal run, or
(d) is one that an employee is not required to enter.
Support of unstable walls cut in solid rock
181(2)Where the walls or crests of an excavation or trench are cut in solid rock and are not stable, an employer shall ensure that the walls and crests are adequately supported by rock bolts, wire mesh, shoring or a method that provides equivalent support.
Support where heavy equipment used near edge
181(3)Where powered mobile equipment or a mobile crane is used near the edge of an excavation or trench, an employer shall ensure that any shoring, bracing or caging for the excavation or trench is adequate to support the increased pressure.
Certificate of engineer respecting support
181(4)An employer shall ensure that shoring, bracing or caging for an excavation or trench is certified as adequate by an engineer and shall make the proof of the certification available to an officer on request.
2001-33