Framing & StructuralQuestion 437 of 700
In a wood-framed dwelling, fireblocking must be installed in concealed stud wall cavities at the ceiling and floor levels and, along the horizontal run, at intervals not exceeding what distance?
a.4 feet
b.6 feet
c.10 feet
d.20 feet
Explanation
Fireblocking cuts off concealed draft openings so fire cannot spread quickly through wall cavities; horizontally it is required at intervals not exceeding 10 feet, plus at ceiling and floor levels. 4 and 6 feet are stricter than required, and 20 feet far exceeds the code limit, leaving an unbroken chimney-like cavity.
Law Reference: 2025 CA Residential Code §R302.11Practice all 700 questions free — no signup required.
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