Designed to provide the same cable management facilities as our standard riser bases the SRB Series riser bases have been seismic certified to the following codes and standards: 2007 & 2010 CBC; 2006, 2009 & 2012 IBC; ASCE 7-05 (2005 Edition) & ASCE 7-10 (2010 Edition) and the 2006 & 2009 editions of NFPA 5000 for use in areas of high seismicity – Zone 4 or Seismic Design Category (SDC) “D”. These are designed for Mission Critical and/or High-Importance Installations in locations with the highest level of seismicity and top floor or rooftop installations including those within UBC and CBC Essential facilities or IBC, ASCE 7, and NFPA 5000 Seismic Use Group III facilities. For all codes, the Importance factor (Ip) is 1.5. Seismic Certified load capacity of 1,000 lbs (1 Bay), 1,750 lbs (2 Bay), and 2,450 lbs (3 Bay) when used with the appropriate seismic floor anchor brackets. With a standard 24" height (custom heights from 9"-24"available upon request), these riser bases are constructed of rugged 11-gauge steel. OSHPD approved for fixed equipment anchorage in California healthcare facilities. Available for select enclosures, these riser bases require the use of seismic brackets.