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910.3.3 Vent Dimensions
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The effective venting area shall not be less than 16 square feet (1.5 m2) with no dimension less than 4 feet (1219 mm), excluding ribs or gutters having a total width not exceeding 6 inches (152 mm).
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910.3.2 Fire Protection Systems, Vent Dimensions
The effective venting area shall not be less than 16 square feet (1.5 m 2 ) with no dimension less than 4 feet (1219 mm), excluding ribs or gutters ...
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The effective venting area shall not be less than 16 square feet (1.5 m 2 ) with no dimension less than 4 feet (1219 mm), excluding ribs or gutters ...
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