A rated corridor wall is patched after plumbing work, and the patch uses ordinary board without matching the tested assembly. What must be maintained?
Correct Answer
D) Rating continuity.
Repairs in fire-resistance-rated assemblies must maintain the required rating.
Why This Is the Correct Answer
Repairs in fire-resistance-rated assemblies must maintain the required rating.
Why the Other Options Are Wrong
Option A: Fastener seating.
Fastener seating. may relate to another site control, but it does not remove or guard the rated drywall assemblies exposure being tested.
Option B: Fire rating.
Fire rating. may relate to another site control, but it does not remove or guard the rated drywall assemblies exposure being tested.
Option C: Joint staggering.
Joint staggering. may relate to another site control, but it does not remove or guard the rated drywall assemblies exposure being tested.
Memory Technique
Name the harm before the guard; fastener, seating, fire cannot stand in for Checking Rated-Wall.
Reference Hint
Study anchor (closed-book): memorize Rated drywall assemblies from California Building Code, California Code of Regulations Title 24. / Title 24 California Building Code fire-resistance-rated gypsum assemblies; know the rule or calculation trigger without relying on exam-room lookup.
More Class B Trade Questions
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A waterproof deck surface is 14 feet deep and must slope 1/4 inch per foot to the drain. What vertical fall is needed?