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- To: seaoc(--nospam--at)seaoc.org
- Subject: pre engineered metal building foundations
- From: Joseph Murar <murarjm(--nospam--at)wwics.com>
- Date: Mon, 25 May 1998 19:13:41 -0700
I would like some opinions on designing pre engineered metal building foundations for uplift and lateral bearing & sliding. We consider the dead load and lateral bearing from 1/3 the stem wall length between bay spacing will offer resistance. ie. 30 ft bay /3 or 10 ft. The stems and main frame piers are cased monolithically and all reinforcement is continuos through the piers. Safety factors (SF) are 1.5 for silding, uplift 2.0 for overturning. The soils are usually type 4 Table 18-1-A Recently we reviewed a foundation plan supplied by a metal building company in which they assumed 1/2 the bay for uplift and lateral sliding. They also allowed credit for the backfill material and 4" conc. floor slab and SF 1.5 overturning. Thanks in advance Joe Murar P.E.
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