A protected building area is being laid out during construction. What portable fire extinguisher coverage is required by the OSHA construction fire-protection rule?
Correct Answer
B) At least one 2A extinguisher per 3,000 sf or major fraction, with travel distance not over 100 ft
OSHA requires a fire extinguisher rated not less than 2A for each 3,000 sf or major fraction of protected building area, with travel distance not over 100 ft. Other choices understate the rating, restrict coverage to the trailer, or wait too long.
Why This Is the Correct Answer
OSHA requires a fire extinguisher rated not less than 2A for each 3,000 sf or major fraction of protected building area, with travel distance not over 100 ft. Other choices understate the rating, restrict coverage to the trailer, or wait too long.
Why the Other Options Are Wrong
Option A: Set the fire extinguisher coverage threshold at One 1A extinguisher per 1,000 sf with 50 ft travel distance
The trap in A is One 1A extinguisher per 1,000 sf with 50 ft travel distance. That selection is wrong because One 1A extinguisher per 1,000 sf with 50 ft travel distance is a different published number than the cited Fire extinguisher coverage value; 29 CFR 1926.150(c)(1)(i) supports At least one 2A extinguisher per 3,000 sf or major fraction, with travel distance not over 100 ft; At least one 2A extinguisher is required for each 3,000 sf or major fraction, and travel distance cannot exceed 100 ft.
Option C: One extinguisher only at the jobsite trailer
Choice C (One extinguisher only at the jobsite trailer) is rejected because the action skips the timing, documentation, or field-control step needed for Fire extinguisher coverage.
Option D: Treat the condition as requiring no extinguishers are needed until permanent fire sprinklers are active
In general project requirements, No extinguishers are needed until permanent fire sprinklers are active is the wrong selection for Fire extinguisher coverage: the choice would not get the project to At least one 2A extinguisher per 3,000 sf or major fraction, with travel distance not over 100 ft, which is the Fire extinguisher coverage result verified by the source.
Memory Technique
File fire extinguisher coverage under a scope box: condition first, number or duty second, answer At least one 2A extinguisher per 3,000 sf or major fraction, with travel distance not over 100 ft.
Reference Hint
Open 29 CFR 1926 OSHA Construction Standards; use 29 CFR 1926.150(c)(1)(i) to confirm that OSHA requires a fire extinguisher rated not less than 2A for each 3,000 sf or major fraction of protected building area, with travel distance not over 100 ft.
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