Looking for input on a timber trench excavation shoring.
The trench is up to 12' deep and 5' wide. The soil is "type B" and is mostly sand. The site is to be dewatered during excavation.
The vertical and horizontal spacing is 4' between cross braces. All material is lumber.
My calculations...
Does anyone with more experience see any problems with the box excavation shoring configuration? (4' vertical and horizontal spacing between cross braces. All material is lumber)/
My calculations show the 3x10 horizontal lagging, 3x10 uprights and 4x4 braces should be OK. The only issue I have...