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RE: Temporary shoring safety factor

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ASCE 37-02 offers some suggestions for construction loads and load cases; it could be worth checking out.  In general, though, you don't get many reductions for short duration.  For dead load, particularly, is there any reason to think that 10 kips for 3 weeks is less critical than 10 kips for 3 years?  Things like wind and seismic can sometimes be rationalized down with the idea that the odds of a full code level design event of either in a short time frame is very small, but this doesn't apply to DL which doesn't change
 
Paul Crocker, PE, SE
-----Original Message-----
From: Mark Baker [mailto:shake4bake(--nospam--at)earthlink.net]
Sent: Thursday, January 16, 2003 7:55 PM
To: seaint(--nospam--at)seaint.org
Subject: Temporary shoring safety factor

What dead load factor of safety would be appropriate for temporary shoring of roof in an unoccupied building. Shoring to be in place for 2 months max., probably only 3 weeks while an opening is cut in load bearing wall, wall strengthened to compensate for new opening, shoring then removed.
 
TIA
 
Mark