I've never seen rebar in a basement floor although wire mesh was sometimes used in the past. Rebar is no longer used in curbs or sidewalks in Ohio because, the non coated stuff tends to rust out and cause more damage where salt water from road de-icer seeps through cracks. Green bar (epoxy coated) is used extensively in structures but is not considered cost effective for non structural pours. 5000 psi concrete is adequate for properly prepared concrete pours on graded ground.

Larry2
Public Works Inspector
Cincinnati, Ohio

 ---- Lawrence Kestenbaum <[log in to unmask]> wrote: 
> Okay, so the contractor showed up this morning, and they have been
> jackhammering the basement floor to open up a 2' wide trench along the
> outside walls.  Last I looked, they were more than half done
> trenching.
> 
> From the concrete chunks they have been dumping in their truck, the
> concrete floor is about five inches thick.  But, to my astonishment,
> it's just concrete, no rebar.
> 
> How would a concrete basement floor stay nice and flat for 50+ years
> without any reinforcement?  Don't they use rebar even in sidewalks?
> 
>                     Signed, Never Actually Poured Any Concrete Myself,
> Just Helped Install Forms, And That Was More Than Three Decades Ago in
> Arizona
> 
> ---
> Lawrence Kestenbaum, [log in to unmask]
> Washtenaw County Clerk & Register of Deeds, http://ewashtenaw.org
> The Political Graveyard, http://politicalgraveyard.com
> P.O. Box 2563, Ann Arbor, MI 48106
> 
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