NFPA 13 (2002) 9.1.1.2(1) states that "Hangers shall be designed to
support five times the weight of water-filled pipe plus 250 lb at
each point of piping support." Does this mean the hanger assembly
only, or does make it incumbent on the structural steel to actually
support this load as well? For a 10 ft piece of 4" sch 10, this would
equate to a point load of 839 pounds. We have to get some information
to a CE to figure out how to hang a system.
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080
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