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NFPA 101: Section subsection 2.b

Question asked by o.baranov on May 5, 2020
Latest reply on May 7, 2020 by milt.werner

I was wondering if someone could help me understand Section subsection 2.b within the NFPA 101: Life Safety Code.


The code reads, "A vertical extension is provided below the projection such that the extension has a leading edge that is within 4 in. (100 mm) of the leading edge of the projection at a point that is 27 in. (685 mm) maximum above the floor."

I am having trouble visualizing this point. What exactly do they mean by the leading edge? Is there a diagram available by any chance?