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§ 18-28-401.5.1.6 — Air quantities

Municipal Code of Chicago (2026 S-74, current through Council Journal of June 17, 2026) · Municipal Code of Chicago § 18-28-401.5.1.6

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18-28-401.5.1.6 Air quantities.

The quantity of air supplied or exhausted through any relief opening shall not be less than the quantity specified in Section 18-28-403.3 for mechanical supply or mechanical exhaust systems. The termination of the duct shall be equipped with a storm-proof louver, cowl, or other equipment opening having an outlet free area not smaller than that of the duct.