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RE: office live load[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: office live load
- From: William Keil <WJK(--nospam--at)brph.com>
- Date: Thu, 2 Dec 1999 13:27:16 -0500
IMHO, it appears the plan checker is trying to play structural engineer. Most codes I've worked with require 80 to 100 psf for exit corridors only and others require the corridors to be equivalent to the areas that exit into the corridor. So in this case you should be able to put the 50+20 psf in the office area and 80 to 100 psf along the "exit corridors" only. The recommendation to put 100 psf everywhere is equivalent to what I do on projects when an adequate budget does not exist to study the various layouts to get the worst case. As long as the office areas are comprised of "movable" furniture the plan checker may continue to require the 80+20 psf analysis. In that case, I would definitely use the live load reduction if applicable. Depending on the code and the tributary/influence area, the loads can be reduced from 10 to 40% and likely to be closer to the condition that you originally designed. These reductions save enough structural tonnage to justify the calculation. William J. Keil, P.E.
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