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Re: Twisting of rebar

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Make a mental note of the concrete sub, just in case you have the good fortune of working with them in the future...

As Steve suggested, leave the bars in place and maybe add an angle/channel ledger with expansion or epoxy anchors to the shear wall (in accordance with ACI 318, App. D, of course).

On Thu, Nov 6, 2008 at 7:57 AM, William Haynes <gtg740p(--nospam--at)gmail.com> wrote:
PCA Notes on ACI 318 has bending tables and additional information
generated from references that are listed in ACI 318 section 7.3.


On Thu, Nov 6, 2008 at 10:25 AM, Dickey, David
<David.Dickey(--nospam--at)masonandhanger.com> wrote:
> Is there an ACI document that specifies the amount that a bar can be
> twisted?
>
> Hooked bars extend out of the top of a load-bearing 12" concrete wall.
> The concrete roof slab has not been placed yet.  The hooks are intended
> to be perpendicular to the wall, but have been placed parallel.  I
> recommended that the bars be heated to 1350-1400F, straightened, and
> then bent in the correct direction.  The contractor would prefer to
> grasp the bar at the point where it protrudes from the concrete and
> twist the bar 90 degrees.  The bar extends approx. 12" above the level
> of the concrete, so 90 degrees of twisting in a #5 bar would be
> occurring over a 12" length.
>
> I am entertaining this proposal because another case of heating and
> bending bars on this job (without my approval) turned out to be a
> disaster.
>
> Thanks,
>
> David Dickey, P.E.
> Lexington, KY
>
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