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Water Sprinkler Protected Areas vs. Hazard Classification

Maximum fire sprinkler protected area vs. classification and construction.

Maximum protection area per sprinkler:

Water Sprinkler - Protected Areas vs. Hazard Classification
Hazard ClassificationCeiling and Sidewall ConstructionMaximum Protected Area
(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
Noncombustible finish 196 18.2
Ordinary Standard pendent and upright sprinklers All 130 12.1
Standard sidewall sprinklers Combustible finish 80 7.4
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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