A floor under construction has 7,800 sf of protected building area. Using one 2A extinguisher per 3,000 sf or major fraction, how many extinguishers are required before travel-distance checks?
Correct Answer
C) 3 extinguishers
7,800 / 3,000 = 2.6, so the major fraction requires rounding up to 3 extinguishers before checking travel distance. Other choices round down, leave a fractional count, or add an unsupported extra unit.
Why This Is the Correct Answer
7,800 / 3,000 = 2.6, so the major fraction requires rounding up to 3 extinguishers before checking travel distance. Other choices round down, leave a fractional count, or add an unsupported extra unit.
Why the Other Options Are Wrong
Option A: 2 extinguishers
fire extinguisher count, choice a: 2 extinguishers counts a different spacing, panel, or repeated member quantity.
Option B: 2.5 extinguishers
fire extinguisher count, choice b: 2.5 extinguishers is wrong because 2.5 extinguishers counts a different spacing, panel, or repeated member quantity.
Option D: 4 extinguishers
fire extinguisher count, choice d: 4 extinguishers counts a different spacing, panel, or repeated member quantity.
Memory Technique
Say the fire extinguisher count rule aloud as a chain; the chain ends at 3 extinguishers, not an intermediate stop.
Reference Hint
Open 29 CFR 1926 OSHA Construction Standards; use 29 CFR 1926.150(c)(1)(i) to confirm that 7,800 / 3,000 = 2.6, so the major fraction requires rounding up to 3 extinguishers before checking travel distance.
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