Section 910 Smoke and Heat Removal
- Frozen food warehouses used solely for storage of Class I and II commodities where protected by an approved automatic sprinkler system.
- Smoke and heat removal shall not be required in areas of buildings equipped with early suppression fast-response (ESFR) sprinklers.
- Smoke and heat removal shall not be required in areas of buildings equipped with control mode special application sprinklers with a response time index of 50 (m • s)1/2 or less that are listed to control a fire in stored commodities with 12 or fewer sprinklers.
Smoke and heat vents installed in accordance with Section 910.3 or a mechanical smoke removal system installed in accordance with Section 910.4 shall be installed in buildings and portions thereof used as a Group F-1 or S-1 occupancy having more than 50,000 square feet (4645 m2) of undivided area. In occupied portions of a building equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 where the upper surface of the story is not a roof assembly, a mechanical smoke removal system in accordance with Section 910.4 shall be installed.
The required aggregate area of smoke and heat vents shall be calculated as follows:
For unsprinklered buildings: