Special Seismic Certification

International Building Code

IBC requires that critical systems and components must not only maintain structural integrity during an earthquake, but also remain operational and continue to carry out their primary functions (per 2009 IBC 1708.4 and 2006 IBC 1708.5).

These requirements are for systems that are part of the designated seismic system (Ip=1.5) which must remain operational for life-safety (in any structure) or are critical systems in essential or hazardous facilities (Risk Category IV).

The code is explicit that active components (moving or rotating parts) and energized components (carrying electrical charge) must be certified exclusively through shake table testing or experience data when in SDC C through F.