A rated ceiling is patched around conduit with ordinary foam. What should be verified?
Correct Answer
B) Listed firestop.
Penetrations in rated assemblies need an approved firestop system that maintains the rating.
Why This Is the Correct Answer
Penetrations in rated assemblies need an approved firestop system that maintains the rating.
Why the Other Options Are Wrong
Option A: Open inspection.
Open inspection. may relate to another site control, but it does not remove or guard the rated assembly firestopping exposure being tested.
Option C: Outdoor termination.
Outdoor termination. may relate to another site control, but it does not remove or guard the rated assembly firestopping exposure being tested.
Option D: Poor compaction.
Poor compaction. may relate to another site control, but it does not remove or guard the rated assembly firestopping exposure being tested.
Memory Technique
Name the harm before the guard; open, inspection, outdoor cannot stand in for Inspecting Rated-Ceiling.
Reference Hint
Study anchor (closed-book): memorize Rated assembly firestopping from California Building Code, California Code of Regulations Title 24. / Title 24 California Building Code fire-resistance-rated penetration protection; know the rule or calculation trigger without relying on exam-room lookup.
More Class B Trade Questions
A 2-inch horizontal sanitary branch must be installed at 1/4 inch fall per foot. What total fall is needed over a 24-foot run?
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A rooftop unit schedule shows 3 tons of cooling. Using 12,000 Btu per hour per ton, what cooling capacity is this?
A pump motor is listed as 2 horsepower, and the coordination table asks for watts. Using 746 watts per horsepower, what is the approximate motor power?
A slab is 30 feet long, 18 feet wide, and 4 inches thick. How many cubic yards of concrete are needed before waste?
A footing is 80 feet long, 2 feet wide, and 12 inches deep. How many cubic yards of concrete are required before waste?
A patio subgrade must drain at 2 percent away from the building for 20 feet. What total drop is required?
A building pad needs 150 compacted cubic yards of fill. If the borrow material shrinks 10 percent after compaction, about how many loose cubic yards should be hauled in?
A roofing estimate shows 2,850 square feet of roof area. How many roofing squares is that?
A waterproof deck surface is 14 feet deep and must slope 1/4 inch per foot to the drain. What vertical fall is needed?