Using the National Fire Academy Fire Flow Formula, what is the required GPM for a building 60 ft by 30 ft with two exposures?

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Multiple Choice

Using the National Fire Academy Fire Flow Formula, what is the required GPM for a building 60 ft by 30 ft with two exposures?

Explanation:
The calculation uses a rule-of-thumb fire flow formula that estimates water needs from the area of the involved building. You multiply the building’s area by a fixed flow factor, which for this formula is 0.5 GPM per square foot. First find the area: 60 ft × 30 ft = 1800 ft^2. Then apply the factor: 1800 × 0.5 GPM/ft^2 = 900 GPM. The two exposures don’t change this specific calculation in this formula; it focuses on the area of the main involved structure. So the required flow using this method is 900 GPM.

The calculation uses a rule-of-thumb fire flow formula that estimates water needs from the area of the involved building. You multiply the building’s area by a fixed flow factor, which for this formula is 0.5 GPM per square foot.

First find the area: 60 ft × 30 ft = 1800 ft^2. Then apply the factor: 1800 × 0.5 GPM/ft^2 = 900 GPM.

The two exposures don’t change this specific calculation in this formula; it focuses on the area of the main involved structure. So the required flow using this method is 900 GPM.

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