What are the criteria used to determine if seismic calculations are provided?
Per California codes (based on worst-case scenario earthquakes), we provide seismic calculations for our floor-mounted equipment if it is over 400 pounds. If it is under 400 pounds we may still provide seismic calculations if the height and/or shape of the piece of equipment causes the center of gravity to be “off-center” (i.e. raised high over the base or if the entire piece is under 400 pounds but over 5 feet tall). Seismic calculations for ceiling and wall mounted equipment are provided for equipment over 20 lbs.
