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Heavy timber roof deck exterior projections and sprinkler coverage

Question asked by katep on Mar 20, 2019

Building codes allow heavy timber roof deck in non-combustible construction types 1 and 2. In exterior projections exceeding 4 feet, can the heavy timber be considered "non-combustible, or limited combustible" such that NFPA 13 8.15.7.2 can be allowed, omitting the need for exterior sprinkler coverage?

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