Hello Todd,
The original building plans are not available. I am considering this to be a Class II metal deck roof, and assuming tar and gravel, foam insulation, a combustible vapor barrier, and combustible adhesive over a steel deck. David From: Sprinklerforum [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, March 10, 2017 5:00 PM To: Sprinklerforum Subject: Re: Built-up roof deck as a limited-combustible construction Any more details on what the built up roof consists of? Todd G Williams, PE Fire Protection Design/Consulting Stonington, CT 860-535-2080 (ofc) 860-553-3553 (fax) 860-608-4559 (cell) On Mar 10, 2017 at 4:57 PM, <David Bitton <mailto:[email protected]> > wrote: Hello, I have a 35 ft high building being built adjacent to a 22 ft high building which has a built-up, insulated metal deck roof. The structural engineer has devised a sloped "snow shed" between the addition and the lower building in order to distribute the increased snow load at this juncture. This will create an inaccessible concealed space on the roof which will be of noncombustible construction, with the exception of its base, which will be the built-up metal deck roof of the existing building. Would you consider this as meeting the definition of "limited combustible construction", meaning that the space would not require sprinkler protection? David Bitton, ing./Eng. Quest Loss Control Services Inc. 5100, rue de la Savane, bureau 200 Montréal, Québec H4P 1T8 T: (514) 341-4545 C: (514) 996-7483 www.questlosscontrol.com
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