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Morris, IL | That is what we used under the shop floor while backfilling frost barrier, 3/4" without fines. Concrete guys all say it won't move. Drove some heavy stuff on top of 4' of this stuff before pouring and as far as we could tell it didn't move. Best option is to dig footing and pour whole thing, no forms and no backfilling, saves a lot of work but sometimes hard to do.
Edited by NEILFarmer 5/31/2012 22:59
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What to put under bin footers
