With the use of CPVC, what are the limits to how much can be exposed?
I had thought that we needed to have all of the pipe concealed, and I can't see in code how this is addressed.
We have a project with a temperature-controlled and insulated attic (the mechanical engineer has confirmed it will be kept above 40 degrees F year-round) in a warm climate. This is in an NFPA 13R apartment building.
Is CPVC allowed to be run exposed through the combustible attic space?
The attic is not sprinkler protected (NFPA 13R system, 3-story, apartments, smaller-sized project). Thanks in advance.
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