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unreinforced concrete slab 1

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morganjoe

Civil/Environmental
Joined
Mar 13, 2007
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13
Location
US
Can anyone tell me the procedures, assumptons, and formulas to use when checking a thick unreiforced concrete slab. I am thinking that if the slab is thick enough you just need to check the shear values because the tension steel will not develope. Is there a ratio of length to depth, or other guidlines on when this assumtion is correct?

Any help would be greatly appreciated.

Thanks
 
Morganjoe- Are you sure that your socalled concrete slab in the cofferdam is not actually a so-called "mud slab" which is a weak concrete mix for the purpose of providing a clean bottom before other works are carried out?
 
The slab is not a so-called "mud slab" or "rat slab", it will be in place to resist hydrostatic uplift forces. I looked into fiber mesh, but this is for the durability of the concrete and not intended to replace structural reiforcement.
 
so what is this thing sitting on? any supports or is it a slab on grade?
 
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