When installing roof sheathing in Hawaii hurricane zones, what is the maximum allowable spacing for fasteners along panel edges?
Correct Answer
C) 6 inches on center
Hurricane zone requirements in Hawaii specify maximum 6-inch spacing for fasteners along panel edges to ensure adequate wind resistance.
Why This Is the Correct Answer
Hawaii's hurricane zone requirements specify a maximum fastener spacing of 6 inches on center along panel edges for roof sheathing. Closer spacing at edges — where panels are most vulnerable to wind uplift peeling — ensures the sheathing remains attached to the framing during high-wind events. This is tighter than standard (non-hurricane) construction to provide enhanced wind resistance.
Why the Other Options Are Wrong
Option A: 8 inches on center
8 inches on center is a common standard for non-hurricane construction but does not meet Hawaii's enhanced requirements for hurricane zones. Greater spacing allows more opportunity for wind to get under panel edges and cause sheathing failure.
Option B: 4 inches on center
4 inches on center exceeds the required tightness — it would provide even more resistance but is not the maximum allowed spacing. The question asks for the maximum (least restrictive allowed), which is 6 inches.
Option D: 12 inches on center
12 inches on center is far too loose for hurricane zones. This spacing might be used for interior sheathing panels in non-wind-critical areas but would be inadequate at roof panel edges in Hawaii's hurricane environment.
Memory Technique
Six inches at the edge — think of a ruler held at the panel edge with marks every 6 inches. 'Six for safety at the sides' in Hawaii's storm zones. Field spacing is looser; edge spacing is tight at 6.
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