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RE: Sloshing Damping

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It doesn't reduce your seismic shear.  Normally acceleration response spectra is based on 5% damping for buildings.  For sloshing water, the damping is reduced to 0.5%, which in turn increases the spectral response. The response at 0.5% damping is 1.50 times that at 5% damping.
 
Bill Sherman
CH2M HILL / DEN
720-286-2792
 


From: Rich Lewis [mailto:seaint04(--nospam--at)lewisengineering.com]
Sent: Tuesday, November 21, 2006 3:07 PM
To: seaint(--nospam--at)seaint.org
Subject: Sloshing Damping

ASCE 7 allows for 0.5% damping for sloshing of material in a storage tank.  How do I use this number to reduce the seismic shear?

 

Thanks.

 

Rich