The exceptions to Chapter 9, Section 910.4 of the 2021 International Fire Code contained in § 91.47 shall only be applied to buildings with a ceiling height of 24 feet or less and use groups F-1 and S-1 protected with an Early Suppression Fast Response (ESFR) fire sprinkler system and where the exit access travel distance is beyond 250 feet but shall not exceed a maximum exit access travel distance of 400 feet. All other requirements in Sections 910.1 and 910.4 of the 2021 International Fire Code shall apply.
Amendments to Sections 910.2 and 910.4 of the 2021 International Fire Code (IFC)
Amend Section 910.2 of the 2021 IFC as follows:
Where required: By this code or otherwise installed, smoke and heat vents or a mechanical smoke removal system shall confirm and be installed as required by 2021 International Fire Code Sections 910.2.1 and 910.2.2
Exceptions:
1. Frozen food warehouses used solely for storage of Class I and II commodities where protected by an approved automatic fire sprinkler system.
2. Automatic smoke and heat removal systems shall not be required in areas of buildings equipped with an Early Suppression Fast Response (ESFR) fire sprinkler systems unless the building or portion thereof is classified as use Group F-1 or S-1 and has an exit access travel distance exceeding 250 feet.
Amend Section 910.4 of the 2021 IFC as follows:
Mechanical Smoke removal systems: Mechanical smoke removal systems shall be designed and installed in accordance with 2021 International Fire Code Sections 910.4.1 through 910.4.7
Location:
Exhaust fans shall be uniformly spaced and the maximum distance between fans shall not exceed 100 feet.
Amend Section 910.4.3 of the 2021 IFC as follows:
Size. The mechanical smoke removal system shall be sized to exhaust the building at a minimum rate of two complete air exchanges per hour based upon the volume of the building or portion thereof without contents. The capacity of each exhaust fan shall not exceed 50,000 cubic feet per minute
Amend Section 910.4.5 of the 2021 IFC as follows:
Manual control location. Manual controls shall be located at the fire sprinkler room so as to be accessible to the fire service from an exterior door of the building and protected against the interior fire exposure by not less than 1 hour fire barriers.
(Ord. 11-0935, passed 11-2-11; Am. Ord. 12-1016, passed 11-7-12; Am. Ord. 17-1347, passed 3-1-17; Am. Ord. 22-1811, passed 12-7-22)