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Re: Seismic Charges

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On Oct 1, 2008, at 9:27 PM, Rich Lewis wrote:

Obviously we don’t want to set a charge off near a building. Are there any specific items we should be considering when responding to their questions? I thinking this may be more of a geotechnical question then a structural question. Is there any method of converting explosive underground charges into something like a seismic event on a building?
Probably what you need is a response spectrum representing the ground movement near an explosion. It's a geotechnical problem, but I bet someone in the explosives business has done the requisite measurements and made them into shock spectra. It'd be similar to ground motion measurements for earthquakes but shorter duration.

Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw(--nospam--at)   | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania 1864)

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