|Trenches and excavations must be sloped or shored if they are over 1.22 metres or 4 feet in depth. Trenches in compact soil are shored with vertical timbers on each side of the trench. The timbers are spaced 5 feet on centre and held in place with cross braces or screw jacks. There must be a cross brace for each 4 feet of depth with a minimum of 2 cross braces.|
|1. Sloping The Trench Walls.
2. Trench Shoring In Compact Soil.
3. Trench Shoring In Loose Soil.
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