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We have an outdoor wooden canopy overhanging over a building entrance with the following dimensions: 45'-6" x 13'-0". The canopy has an existing wet pipe sprinkler system utilizing water/glycol mix. The building is in an area where winter temperatures can go below 0 deg F (-18 deg C).
Given the new NFPA requirement of reduced glycol mix ratio and hence the existing sprinkler system is no longer compliant with NFPA and requires to be replaced. My question is, is it feasible and compliant to have the wooden canopy treated with fire retardant NFPA 703 approved coating/painting and hence the canopy can be considered non-combustible or at least limited-combustible eliminating the requirement to install a sprinkler system under NFPA 13 section 9.2.3? I appreciate your feedback. Thanks Submitted anonymously and posted for discussion. Discuss This | Submit Your Question | Subscribe
4 Comments
Jonathan Sullivan
9/16/2020 10:03:33 am
Generally no. The canopy must be non-combustible, limited combustible, or fire-retardant treated wood as defined in NFPA 703.
Brian Spurrell
9/16/2020 11:38:49 am
Viking Supply Net now has a UL listed antifreeze formulated by Librizol (-12F / -24.4C)
tony
9/19/2020 07:32:38 am
If the building is a wet system then install drywall side heads, at the end of the day it works, it will be most likely cheaper and faster. also you won't have to go through any time delays from the AHJ in getting approval for the coating. In my area not only do we have to get AHJ approval we also need to submit an Engineers letter for sign-off. Leave a Reply. |
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