I have always been taught that a collapse indicates unstable soil conditions and should be treated as Class "C" soil. If the trench has collapsed once there is a high risk that it could collapse again.
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Thread: Trench Spot Shores
02-08-2011, 11:36 PM #21
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- Feb 2003
- Canada's North
Last edited by CANFF2706; 02-25-2011 at 01:39 PM.
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