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RE: Vibration Problem

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Glen Pappas wrote:

. > The literature indicates that peak soil velocities (i.e., ground shock)
. > on the order of hundreths of ft/s are perceptible, tens of ft/s are
. > unpleasant, approx 2 ft/s is considered safe for building damage, & it
. > takes 5 - 8 ft/s to damage plaster.

I thought that the peak particle velocity of 2 in/sec was the damage
threshold above which damage *could* occur.

IIRC, the vibration (shock) that could cause damage is such that it would
frighten any person in the building, not just be perceived.

A. Roger Turk, P.E.(Structural)
Tucson, Arizona

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