The protection area of coverage of the sprinkler shall be established by multiplying the S dimension by the L dimension, as follows: A = S X L

S = distance between 2 sprinklers on the branch line, or twice the distance between the end sprinkler and the wall

L= distance between two branch lines on which the subject sprinklers are positioned

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As per NFPA13, maximum protection area of coverage of any sprinkler shall not exceed 400 sq. ft

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