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NFPA 13, Section 8.15.8.1.1 exempts sprinkler coverage in bathrooms that do not exceed 55 square feet and have walls and ceilings of noncombustible or limited-combustible materials with a 15-minute thermal barrier rating, to include the walls and ceiling behind the tub/shower.
My question is - would a plastic shower assembly that has been tested in accordance with ASTM E162 and is classified as a Class II or Class B material be capable of providing the 15-minute thermal barrier alone? Or, would a separate material still be needed behind the tub/shower assembly? Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
5 Comments
Jesse
9/24/2021 08:34:22 am
By Class II "material: or Group B, I think you mean Class II Commodity and or Group B Plastic. Those two things are not the same so maybe I'm reading it wrong.
Todd Wyatt
9/24/2021 08:42:47 am
I am unaware of any plastic shower enclosure listed as having a 15-minute fire-fesistance rating (FRR).
Mike
9/24/2021 09:32:41 am
Dry wall behind it.
John G
9/24/2021 11:29:13 am
There used to be a product that the stalls were made of, DOMESTIC fiberglass that had the appropriate rating. Italian produced fiberglass stalls came along later with the 15 minute rating.
Alex
9/24/2021 01:43:24 pm
Hi Anonymous, Leave a Reply. |
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