5 Mistakes Contractors Make with Deep Excavations

By Jeffrey W. Coonse, PE / February 26, 2023

Deep Excavation Mistake #1.  You get 4′ for free. OSHA tricked us.  It’s really not our fault.  Everywhere I go, in every deep excavation I visit, most contractors think they get 4 feet for free?  Right?  Don’t we?  Unfortunately, no.  Where did this get started?  I believe it’s from the OSHA benching sketch. It sure…

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