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Tolerances for Cast-in-Place Concrete Walls

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ACI 117, "Standard Specifications for Tolerances for Concrete Construction
and Materials", Section 4 - Cast-in-Place Concrete for Buildings, has
tolerances for wall thickness as follows:

For walls 12 inches thick or less:  +3/8", -1/4".

My copy is from 1990, so don't know if it is current.

Hope this helps.

John Goodman, P.E.
Rochester, NY


----- Original Message -----
From: "Bill Polhemus" <bill(--nospam--at)polhemus.cc>
To: <seaint(--nospam--at)seaint.org>
Sent: Wednesday, February 13, 2002 7:31 AM
Subject: Q: Tolerances for Cast-in-Place Concrete


> I could have sworn I remembered seeing dimensional tolerances for concrete
> in ACI; however all I can find are tolerances for placement of rebar (and
> even then it's limited to "d" and "clear cover" (RE: ACI 7.5).
>
> I've got a foundation stemwall, nominally 12" that in reality tapers to
the
> top of the wall so that it is only about 10" at that point. But how can I
> complain if there are no published acceptable tolerances?
>
> What am I missing?
>
>
>
> William L. Polhemus, Jr. P.E.