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RE: BOCA, exposed concrete 4,500psi

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I think it would be interesting for you to note what the actual concrete
strengths are that you're getting on your job.

My experience here in Texas is that you'd have to "go some" to get less than
4800-5000 psi concrete, even if 4000 is specified. I have specified up to
9500 psi before with scarcely a murmur from concrete suppliers. If you
specify 4500 psi, the suppliers say "comin' right up!" (with Texas drawl, of

Besides, I would think concrete chemistry would have much more to do with
imperviousness to chemical attack viz. from deicing salts than simply the
specified strength.

> -----Original Message-----
> From: Peieng5590(--nospam--at) [mailto:Peieng5590(--nospam--at)]
> Sent: Thursday, August 26, 1999 10:46 AM
> To: seaint(--nospam--at)
> Subject: Re: BOCA, exposed concrete 4,500psi
> Here in Maryland our local codes fokes want us to use 4,500
> psi concrete for all non-residential exterior concrete...