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Fw: Minimum Reinforcing for thick slab on ground[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Fw: Minimum Reinforcing for thick slab on ground
- From: THunt(--nospam--at)absconsulting.com
- Date: Thu, 23 Dec 2004 08:36:58 -0800
The first thing to ask is "is this a STRUCTURAL slab?". If this is a simple slab on grade without significant shears or moments then it is not governed by ACI 318. If this IS a structural slab, then the temperature steel is only required normal to the flexural reinforcement. Note also that there is no reason to put it all in the top and for a slab this thick you would probably want to split it top and bottom.
That said, realize a slab this thick will generate a lot of internal heat and a mesh of rebar top and bottom is a very good idea regardless of what the code says.
Thomas Hunt, S.E.
12/23/2004 07:20 AM
I am designing a concrete mat, 3 ft. thick, which will serve as the top of slab as well. My questions is do I need to provide the minimum top steel of 0.0018% of gross area for shrinkage control based on the overall depth? Is there a reduction for this for extremely thick slabs?
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