37 Tex. Admin. Code § 263.20
Current through Reg. 49, No. 45; November 8, 2024
Air conditioning and ventilation duct work in new facilities and new additions shall contain dampers to resist the passage of smoke at each point a duct penetrates a smoke partition or floor level; such ducts shall close automatically upon the detection of smoke. (Exception: this rule does not apply for duct work which is part of a smoke detection or smoke management system.)
37 Tex. Admin. Code § 263.20