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// CODE SNIPPET

502.4.5 Outdoor Air Intakes and Exhaust Openings

Energy Conservation Code 2009 of South Carolina > 5 Commercial Energy Efficiency > 502 Building Envelope Requirements > 502.4 Air Leakage (Mandatory) > 502.4.5 Outdoor Air Intakes and Exhaust Openings

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Stair and elevator shaft vents and other outdoor air intakes and exhaust openings integral to the building envelope shall be equipped with not less than a Class I motorized, leakage-rated damper with a maximum leakage rate of 4 cfm per square foot (6.8 L/s • C m²) at 1.0 inch water gauge (w.g.) (1250 Pa) when tested in accordance with AMCA 500D.

Exception: Gravity (nonmotorized) dampers are permitted to be used in buildings less than three stories in height above grade.

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