Correct me if I'm wrong, but my understanding is the wood with the fire retardant coating will have to comply with NFPA (2010) 8.15.1.2.10 and not 8.15.1.2.11. My question is what is the 20 minutes that is been referred to? Is it the duration of the test? And what is the "form in which they are installed"? The 2007 handbook commentary says "... material arranged in the position in which it is to be installed. Changes in the orientation or arrangement of the material can significantly change the flamespread characteristics and the combustibility of the material." I think the test must typically be done in a a furnace, with coated wood planks kept horizontal. Is that not good enough? It would really help if someone can give me an example.
8.15.1.2.10 Concealed spaces where rigid material are used and the exposed surfaces have a flame spread rating of 25 or less, and the materials have been demonstrated not to propogate fire more than 10.5 feet when tested in accordance with ASTM 84, Standard Test Method of Surface Burning Characteristics of Building Materials, or ANSI/UL 723, Standard for Test for Surface Burning Chacteristics of Building Materials, extended for additional 20 minutes in the form in which they are installed, shall not require sprinkler protection. Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of David Blackwell Sent: November 19, 2010 6:32 AM To: [email protected] Subject: RE: Fire retardant coating First, take a look at the new (2010) NFPA 13 8.15.1.2.11 and A.8.15.1.2.11 and the handbook commentary to A.8.15.1.2.11. Then check out their website information and UL site info on the specific product they are using. I've got an inspection to run to but they were just at the SC Fire Academy yesterday educating folks on their products. Note that they have multiple related products. Some are intumescent coatings, some soak in, some are clear, some are opaque, etc. Their website is: http://noburn.com/ Their SE office number is 352.404.4274 in case you want to call & get the number for representatives for the CA area. David W. S. Blackwell, II, PE, CFI-I, CFPE Engineering ---------------------------------------------------------------- Office of State Fire Marshal 141 Monticello Trail Columbia, SC 29203 Phone: 803.896.9833 Fax: 803.896.9806 Email: [email protected] OSFM Website: http://www.llr.state.sc.us/firemarshal.asp ---------------------------------------------------------------- -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Friday, November 19, 2010 1:23 AM To: [email protected] Subject: Fire retardant coating I'm checking out a fire retardant coating called 'noburn'. Has anyone come across it? In particular, has it been used to omit sprinklers in a combustible concealed space? NFPA 13, 2007 section 8.15.1.2.10: Concealed spaces where rigid materials are used and the exposed surfaces have a flame spread index of 25 or less, and the materials have been demonstrated not to propogate fire when tested in accordance with NFPA 255, Standard Method of Test of Surface Burning Characteristics of Building Materials, extended for an additional 20 minutes in the form in which they are installed, shall not require sprinkler protection. I believe this is the criteria by which the fire retardant needs to be judged. Is that correct? What is the "additional 20 minutes" that is being referred to? I will be taking a closer look at NFPA 255. But meanwhile if there is anyone who has already gone through this process, I would appreciate any comments. Tony _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
