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RE: UBC 1997
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: UBC 1997
- From: "Jerry Coombs" <JCoombs(--nospam--at)carollo.com>
- Date: Wed, 15 Aug 2007 11:00:21 -0700
No, the 12' limitation is only for limiting the upper value when computing the lateral pressure.|
>>> "Mark Deardorff" <mark(--nospam--at)rstavares.com> 8/15/2007 12:56 PM >>>
BTW, The formula for non-constrained conditions, for the purpose of calculating lateral soil bearing, are limited to a depth of embedment of 12'. I am not sure the formulas are valid for a 46' embedment.
Mark E. Deardorff, SE
R & S Tavares Associates, Inc
9815 Carroll Canyon Road
San Diego, CA 92131
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This is the same equation as in the 2006 IBC 1805.7.2.1 Eqn 18-9.
Don't forget that you can use the S1 values x2 for isolated poles allowing .5" movement, as well as the 1/3 increase.
>>> Padmanabhan Rajendran <rakamaka(--nospam--at)yahoo.com> 8/15/2007 12:04 PM >>>
There are frequent references to UBC 1997 in this list. As old as that code is, does it continue to be allowed by the permitting agencies? Considering that the methodologies to calculate wind and seismic loading have changed significantly, why has UBC 1997 not become defunct?
Do ISO 9002 certified institutions still use UBC 1997?
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