Section SPS 362.0717 - Ducts and air-transfer openings(1) SMOKE DAMPER ACTUATION. This is an additional method in addition to the methods listed in IBC section 717.3.3.2: Method 6: Where a single listed duct smoke detector is installed inside the duct or outside the duct with sampling tubes protruding into the duct in the supply air ductwork downstream of the air handling equipment, including air filters, and ahead of any branch ductwork and return air duct smoke detectors are installed inside the duct or outside the duct with sampling tubes protruding into the duct within 5 feet (1524 mm) of each return air smoke damper, all supply and return smoke dampers shall be closed when any of the duct smoke detectors in the supply or return air ducts are in alarm. Other than in mechanical smoke control systems, dampers shall be closed upon fan shutdown when local smoke detectors require a minimum velocity to operate.(2) DUCT SMOKE DAMPERS. This is a department exception to the requirements in IBC section 717.5.3: Smoke dampers are not required in ducts that are used in the exhaust portion of laboratory ventilating systems that are designed and installed in accordance with NFPA 45.Wis. Admin. Code Department of Safety and Professional Services SPS 362.0717
Adopted by, CR 16-094: renum. (1) to (2) and am., cr. (1) Register April 2018 No. 748, eff. 5/1/2018