Geo-Hydro has heard the screams. Seismic design requirements are much greater under IBC 2000 than they were under the Standard Building Code. Fortunately, probabilistic seismic hazard analysis results in lower accelerations than those provided by the IBC maps. PSHA is the first injection of painkiller and gives some relief to most sites. The second injection is shear wave velocity profile analysis (SWVPA). While not all sites can benefit from this pain reliever, the ones that do often throw away their crutches and run in a marathon the next day. The big change that SWVPA can sometimes produce is taking a Site Class D and turning it into a Site Class C. For structural engineers that have been grappling with this issue, you know that Site Class improvement cascades into major league pain relief.
PSHA and SWVPA are totally legal drugs (they fully meet IBC 2000 requirements) when administered by an experienced doctor (Geo-Hydro). Come line up for your shots today!
For more information on Geo-Hydro's PSHA and SWVPA services check out Tech Notes.
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