I have an attic in building built in the late 70's. It is constructed of Steel trusses with 2 x 4's on top to attach a plywood roof. Other than that, there is no combustible material in the concealed attic space. It is at least 8' from the bottom of the steel trusses to the peak. My first thoughts are that this as a combustible concealed space requiring protection. But I keep coming back to what am I protecting, the combustible roof above the sprinklers? If that's the case, why install sprinklers? This is in Penna where we are still (and will be for quite some time) on the 2007 edition of NFPA 13. Am I missing something in 8.15.1 to eliminate sprinklers in this area? The roof material is definitely not fire retardant treated or limited combustible.
*Jay Stough* NICET IV LAYOUT NICET III ITM
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