 |
 |
 |
 |
|
|
|
|
| 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. Basic Construction And Carpentry Techniques Home |
 |
 |
 |
 |
 |
 |
 |
 |