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RE: Floor Vibration

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There is a paper by Farzad Naeim called "Design Practice to Prevent Floor
Vibrations" (Sept. 1991) available for free download from AISC's web site
( Go to "Steel Info. Online" and then check out the
"Steel Tips". This paper may have what you're looking for.

Dave K. Adams, S.E.
Lane Engineers, Inc.

-----Original Message-----
From: Acie Chance [mailto:achance(--nospam--at)]
Sent: Mittwoch, 1. März 2000 08:15
To: 'seaint(--nospam--at)'
Subject: Floor Vibration

     I know I have it somewhere but I can not find it now. I have read a 
paper where the natural frequency of a floor system was compared to the 
level of comfort humans feel. I am looking at a floor system using W8 
members to span 23 ft. The floor beams are on 5 ft. centers. The deflection 
criteria of table 16A-D is meet however the system has a natural frequency 
of 8 hertz. This  seams low to me. If my memory is not to bad about 15 
hertz is where humans feel comfortable  walking on floors.

     Thanks for any help.

Acie Chance