A sprinkler system, both mains and branch lines, will be supported
entirely from below. There will be no hangers and supports will occur
at least every ten feet. NFPA 13 does not seem to address this
condition in any detail. I can think of many ways to support and
anchor the piping. The problem is I need to know what methods are not
permitted. For example, is piping strapped to a unistrut, point-load
style, technically not permitted?
Thank you,
Allan Seidel
St. Louis, MO
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