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RE: Vibrating Equipments

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The only thing similar to a rule of thumb is contained in ACI 350 Section
2.9 - Impact, vibration, torque, and seismic loads (only 3 pages long).
There is Table 2.9.2(a) "Natural frequencies of beams" and Table 2.9.2(b)
"Recommended maximum structural deflection for given equipment operating

It is not highly sophisticated, but it will generally keep an engineer who
is not a dynamcist out of trouble.

Harold Sprague

> -----Original Message-----
> From:	Sherman, William [SMTP:ShermanWC(--nospam--at)]
> Sent:	Wednesday, April 12, 2000 6:41 PM
> To:	'seaint(--nospam--at)'
> Subject:	RE: Vibrating Equipments
	....  Does anyone have some good rules of thumb for when equipment
vibration and structural
> natural frequencies need not be evaluated in detail?