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Margaret Stillman
Per NFPA 13 Para 9.1.1.2, hangers for fire protection piping need to be rated for 5 times the weight of water filled pipe plus 250 lbs at each support.  If the hanger is attached to a structural beam, does the beam also have to withstand the factored load?  Or does the beam only need to be rated for the actual dead weight of the piping
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