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Water Sprinkler - Protection Area vs. Classification

Maximum fire sprinkler protection area vs. classification and construction.

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Maximum protection area per sprinkler:

Hazard Classification	Ceiling and Sidewall Construction		Maximum Protection Area
Hazard Classification	Ceiling and Sidewall Construction		(ft²)	(m²)
Light	Standard pendent and upright sprinklers	Unobstructed	225	20.9
		Non combustible obstructed	225	20.9
		Combustible obstructed	168	15.6
	Standard sidewall sprinklers	Combustible finish	120	11.1
	Standard sidewall sprinklers	Noncombustible finish	196	18.2
Ordinary	Standard pendent and upright sprinklers	All	130	12.1
	Standard sidewall sprinklers	Combustible finish	80	7.4
	Standard sidewall sprinklers	Noncombustible or limited combustible finish	100	9.3
Extra	Standard pendent and upright sprinklers	All	100	9.3
High-piled	Standard pendent and upright sprinklers	All	100	9.3

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