Spray booths and their exhaust ducts
Spray booths and their exhaust ducts
(OP)
As per NFPA 13 2013, 22.4.1.2 "exception" one can design to Ordinary Hazard 2 for powder coating but does not get into the ductwork portion of the design . I would imaging the 30gpm/15 psi would still apply but seems to defeat the purpose of the exception.
Also - I see that some treat the ductwork/stack 12'-0" max spacing run on the horizontal only. I interpret otherwise. Am I missing something?
Also - I see that some treat the ductwork/stack 12'-0" max spacing run on the horizontal only. I interpret otherwise. Am I missing something?





RE: Spray booths and their exhaust ducts
Travis Mack
MFP Design, LLC
www.mfpdesign.com
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RE: Spray booths and their exhaust ducts
RE: Spray booths and their exhaust ducts
OH-2 in the booth is still a significant reduction, in terms of piping and number of sprinklers though. 5.6's instead of 8's or 11.2's saves the contractor some $$, more still if you can use the 15' max spacing and eliminate an entire branch line.
RE: Spray booths and their exhaust ducts