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RE: Crane Runway Bracing Vibration

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Observation: The CAUSE might be mechanical, but the PROBLEM is, nonetheless, 

That is, the solution will be a structural engineering solution, since it's 
 unlikely the mechanical equipment can be so easily altered or adjusted.

-----Original Message-----
From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On 
Behalf Of Daryl Richardson Sent: Sunday, June 08, 2014 2:58 PM
To: seaint-seaosc(--nospam--at)
Subject: Re: [SEAINT-SEAOSC] Crane Runway Bracing Vibration

1.) Uneven drive wheel forces which would also cause racking of the bridge, 
 hence,  horizontal reactions of the runway beams.  If this happens I would 
 expect unanticipated deflections at the top of the columns.  It would also 
 mean that the problem is mechanical rather than structural.

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