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The dirt could have better strength, higher damping provision, or bigger dirt quakes than first screening prepared for. In terms of product as well as mechanical residential properties, concrete piles offer high architectural ability and also even more longevity, specifically in corrosive and aquatic atmospheres, than steel stacks. It can be quickly be harmed throughout driving and also requires larger lifting equipment. If portions of the cofferdams are to be left in position, guarantee steel sheet piling is cut off to the elevations shown on the plans. Do not enable the Service provider to bring up or re-drive cofferdam sheeting to match the removed elevation unless or else shown on the strategies, or authorized by the Engineer. The pilot little bit, after opening, can be drilled via the ring little bit.