Posted Aug 23, 2016, 2:53 AM
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Registered User
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Join Date: Dec 2006
Location: The Mission
Posts: 690
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The concrete is likely a low-sack slurry mix to provide ground stability for the equipment to place the waler system (it appears to be a somewhat wet and sloppy site). It is easy to excavate through to go deeper once the first level of supports are in place. Thanks for the pictures from such a great vantage point!
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