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Re: Allowable Foundation Pressure UBC97 vs IBC06 Table 18-I-A

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Well, in all likelihood, you're in SDC D or worse (in CA)and need a soils report anyway thanks to the new code... I've never had a soils report give me more ASBP for increasing width or depth, only differences for type of soil (fill, rock etc...) on the site.

Worked on a building in Washington State briefly and although it was SDC B, the building dept made us design it for SDC D.


On Wed, May 21, 2008 at 7:49 PM, Michel <mblangy(--nospam--at)> wrote:
Not many seem surprised to see this provision gone. I have used the increase many times and wonder if others perhaps do/do not find the increase as justied.
----- Original Message -----
From: Michel
Sent: Tuesday, May 20, 2008 9:16 PM
Subject: Allowable Foundation Pressure UBC97 vs IBC06 Table 18-I-A

I do not see the allowable increase of 20% for each additional foot of width or depth in the IBC 2006. Is it in there somewhere? I'm Jonesin.