Specifying Equipment Racks for Seismic Environments
by Alan Taft, Senior Product Manager, Chatsworth Products, Inc. Printed in Equipment Protection Magazine, March 2009
What constitutes a potential seismic environment? Well, just about anywhere on earth is subject to seismic events. It has happened in the past and will definitely happen again in the future, it is just a matter of time and pressure. On any given day, per the National Earthquake Information Center (NEIC) the earth experiences approximately 25 earthquakes with a magnitude of 2.5 or above on the Richter scale. They may not all be felt but with today’s seismic instrumentation most are measured and recorded. The NEIC now locates approximately 14,000 earthquakes per year. Of those, approximately 18 per year are expected to be in the major earthquake category of between 7.0 to 7.9 and 1 catastrophic earthquake per year above 8.0.