You are calculating the fire extinguisher coverage needed for a construction trailer that is 30 feet long by 12 feet wide. Using Class A extinguishers, what is the maximum travel distance to an extinguisher?
Correct Answer
B) 75 feet
OSHA requires Class A fire extinguishers to be placed so that the maximum travel distance to reach an extinguisher does not exceed 75 feet for ordinary combustible materials.
Why This Is the Correct Answer
OSHA 29 CFR 1926.150(c)(1)(i) specifically requires that Class A fire extinguishers be distributed so that the maximum travel distance to reach an extinguisher does not exceed 75 feet. This regulation applies to construction sites including temporary structures like construction trailers. The 75-foot maximum travel distance ensures workers can quickly access fire suppression equipment for ordinary combustible materials like wood, paper, and fabric commonly found in construction environments.
Why the Other Options Are Wrong
Option A: 100 feet
150 feet far exceeds OSHA requirements and would create dangerous delays in accessing fire suppression equipment during an emergency involving ordinary combustible materials.
Option D: 50 feet
50 feet is too conservative and not the OSHA-required maximum. While placing extinguishers closer together provides better coverage, OSHA allows up to 75 feet for Class A extinguishers.
Memory Technique
Remember 'A-75' - Class A extinguishers have a 75-foot maximum travel distance. Think 'A comes first in alphabet, 75 is the bigger number' to distinguish from Class B's 50-foot requirement.
Reference Hint
OSHA 29 CFR 1926.150 - Fire Protection, specifically subsection (c)(1)(i) for Class A extinguisher placement requirements
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