Friday, June 27, 2008

RE: www.seismicfactor.com

Actually Gordon, www.seismicfactor.com does not use the zip code average. It
is obtains specific Ss and S1 based on the actual address. I know many
programs out there use the zip code average which can result in seismic
coefficients being off by as much as 40 percent. I use it regularly and
found it quite reliable and saves me quite a few steps.

Bill

-----Original Message-----
From: Gordon Goodell [mailto:GordonGoodell@harmonydesigninc.com]
Sent: Friday, June 27, 2008 10:56 AM
To: seaint@seaint.org
Subject: RE: www.seismicfactor.com

Exactly what I was looking for. Thank you.

Gordon

<<I map the address in Google Maps to get the lat/lon. Then I use the
USGS tool to get the design values.

You can get it here:

http://earthquake.usgs.gov/research/hazmaps/design/index.php

Chris>>


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