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Keyes Life Safety

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Strange Observations - Sprinkler Pipe Supported From Ductwork

by Brad Keyes, CHSP, on Apr 25, 2019 1:00:03 AM

Continuing in a series of strange things that I have seen while consulting at hospitals...

This is another picture of sprinkler pipe supported from HVAC ductwork, similar to last week's Strange Observations.

I include it here to emphasize that sprinkler pipe cannot be supported from anything except the building structure itself.

I suspect I see this problem in 75% of the hospital where I consult... but then, I'm looking for it.

There is one exception to that rule... Sprinkler pipe may be suspended from a hanger that also supports ductwork, provided the hanger is designed to support the weight of the duct, the pipe, the water in the pipe, and an additional 250 lbs. (see NFPA 13-2010, 9.2.1.5). If you ever see sprinkler pipe suspended from the same hanger that supports ductwork, ask the installer to provide documentation that the hanger can support that weight.

Topics:ArticleHVACSprinklers

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