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Concrete Shrinkage - Slab on Deck

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Drgray1

Drgray1

Civil/Environmental
Joined
Apr 3, 2003
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I am pouring a slab on deck. Do I need to allow for shrinkage, of the thickness? I want a final thickness of 4", to match up with beams that will be flush with top of concrete.
 
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Shrinkage is a very small percentage effect that is only important in the long dimensions of concrete slabs. Your four inch thick slab will shrink insignificantly through its thickness.
 
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