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RE: Contec AAC

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Dr. Richard Klingner from Texas has been tasked to work with the AAC people to get AAC into the building code.  He knows the testing performed to date, the construction practices and what the code is intending.  He is having a bit of an issue getting building code developed. 
Just because something is not in the code does not necessarily make it "illegal" to use.  It adds significantly to the degree of engineering effort.  I would talk to Richard to find out what he would recommend.  I would also bill hourly.

Harold Sprague

> Date: Fri, 28 Dec 2007 09:33:12 -0800
> From: chris(--nospam--at)
> To: seaint(--nospam--at)
> Subject: Contec AAC
> Hi All,
> We've been asked to bid on a residence that is going to be built out
> of Contec Autoclaved Aerated Concrete (AAC). I've not worked with the
> material before and am trying to get a handle on it before putting a
> number on the proposal.
> There is an older ICBO report on it, but that states that it can't be
> used in Seismic zones 3 or 4, and since the project is in the SF Bay
> area (zone 4) it seems like it's not going to work.
> Does anyone on the list have experience designing with this material?
> If so, can you point me to some good references and - hopefully - a
> more recent ICBO report?
> Thanks,
> Chris

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