Proposed Excavation Shoring
Proposed Excavation Shoring
(OP)

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 is that research I've done online most lumber shoring use upright planks for the "sheathing" or a soldier pile and lagging design.






RE: Proposed Excavation Shoring
RE: Proposed Excavation Shoring
RE: Proposed Excavation Shoring
Thaidavid
RE: Proposed Excavation Shoring
IMHO... I don't like the plan at all:
1. The interior is too cluttered with braces.
2. Every (heavily loaded) member has to perform as expected. Just one member failing could be a problem.
3. The 3x10 verticals are not properly proportioned, they are "too thin". Accidental impact or horizontal loading (shown in red on the image below) could cause the vertical member to rotate... initiating a collapse. Even doubling the 3x10s (to make more or less a 6x10... not for strength, but for stability) is marginal.
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