Wednesday, November 4, 2009

RE: Deflection

Check out the recommendations of one of the AISC Guidelines, I can't remember which one, that is the resource I always look to for the H/400 limitation.

Matthew Stuart

________________________________

From: Doug Mayer [mailto:doug.mayer@taylorteter.com]
Sent: Wed 11/4/2009 3:30 PM
To: seaint@seaint.org
Subject: RE: Deflection

David, Matthew:

Seismic drift limitations are often in the realm of H/200 (using 0.020*hx and a Cd=4)...why so much more stringent for wind?

Doug Mayer, SE

From: Stuart, Matthew [mailto:mStuart@cmxengineering.com]
Sent: Wednesday, November 04, 2009 12:18 PM
To: seaint@seaint.org
Subject: RE: Deflection

H/400

D. Matthew Stuart, P.E., S.E., F.ASCE, SECB

Senior Project Manager

Structural Department

Associate

Engineers and Consultants - CMX <http://www.cmxengineering.com/index.htm>

200 Route 9

Manalapan, NJ 07726

732-577-9000 (Ext. 308)

908-309-8657 (Cell)

732-298-9441 (Fax)

mstuart@CMXEngineering.com

________________________________

From: Doug Mayer [mailto:doug.mayer@taylorteter.com]
Sent: Wednesday, November 04, 2009 3:15 PM
To: seaint@seaint.org
Subject: Deflection

When wind governs in your lateral system design, what is the building drift limitation? There doesn't seem to be any specified building drift limitation for wind loads (that I can find) in the code. What do you wind country folks do?

Thanks,

Doug Mayer, SE