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RE: Lateral Force from Pedestrian Movement

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There is a pretty detailed discussion of vibrations due to people walking or
running in the 1997 AASHTO Pedestrian Bridge Guide Spec.  I can't find my
copy unfortunately....
 -----Original Message-----
From: SASQUAKE [mailto:sasquake(--nospam--at)]
Sent: Wednesday, February 09, 2000 9:48 PM
To: seaint(--nospam--at)
Subject: Re: Lateral Force from Pedestrian Movement

In a message   Wed, 9  Feb 2000 19:01:27 EST 
MSSROLLO(--nospam--at) wrote: 

  The only equation we have now is "college town + college kids+alcohol+
thinking you 
can sing/dance = problems".  Currently it is a food establishment, but I can

easily see it becoming a bar in the future.

* Your equation has too many unknowns, is dynamically indeterminate, and
appears to be highly nonlinear.  I would pay 
* particular attention to resonance effects, if it got  to swaying in it's
fundamental mode.  So damping out displacements and their 
* enthusiasm would be a good idea.  Kenny G forces may be significant.  So
maybe some extra braces, frames, and plywood 
* would help. 

* Make sure all connections are bombproof, so they don't Comealoosa, ala
Hyatt Regency in Kansas City. -|-|     all 
* Our experience in the 1994 Northridge, California earthquake has been, 
* if you don't remove that "backup bar", you could be in real trouble!

* IANAL: The Balcony is now closed. 

James Bela 

Oregon Earthquake AwarenessTM        /      The Quake NorthwestTM 
"We Have Nothing to Fear But Beer Itself"        /        "We're All
Subducting In This Together" 
           "Do not look back in anger, or forward in fear, but around in
awareness."  -- James Thurber 

Thanks in Advance 

Ron Martin 
Tuscaloosa, AL