// CODE SNIPPET
910.5 Manually Activated Smoke Exhaust System
JUMP TO FULL CODE CHAPTER
A manually activated smoke exhaust system shall be an acceptable alternate to smoke and heat vents and to allow for the increased travel distance option provided in Section 1016.3.
Fans shall have a maximum individual capacity of 50,000 cubic feet per minute (cfm) and provide a minimum of two air changes per hour.
Smoke exhaust fans shall be manually activated by individual manual controls.
Wiring for operation and control of smoke exhaust fans shall be connected ahead of the main disconnect and protected against exposure to temperatures in excess of 1000°F (538°C) for a period of not less than 15 minutes. Controls shall be located so as to be immediately accessible to the fire service from the exterior of the building and protected against interior fire exposure by not less than 1-hour fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 712, or both.
Supply air for exhaust fans shall be provided at or near the floor level and shall be sized to provide a minimum of 50 perecent of required exhaust. Supply air for exhaust fans shall be uniformly distributed around the periphery of the area served.
Combination comfort air-handling/ manually activated smoke exhaust systems are permitted. In combination comfort air-handling/manually activated smoke exhaust systems or independent comfort air-handling systems, the comfort air-handling system fans shall be controlled to automatically shut down upon duct or area smoke detector activation or sprinkler system water flow as specified in the approved manually activated smoke exhaust system sequence of operation.
Related Code Sections
910.5 Fire Protection Systems, Manually Activated Smoke Exhaust System
A manually activated smoke exhaust system shall be an acceptable alternate to smoke and heat vents and to allow for the increased travel distance ...
Ohio Building Code 2011 > 9 Fire Protection Systems > 910 Smoke and Heat Vents > 910.5 Manually Activated Smoke Exhaust System
910.5 Ohio Administrative Code 1301:7-7-09 Fire Protection Systems, Manually Activated Smoke Exhaust System
A manually activated smoke exhaust system shall be an acceptable alternate to smoke and heat vents and to allow for the increased travel distance ...
Ohio Fire Code 2011 > Ohio Administrative Code 1301:7-7-09 Fire Protection Systems > 910 Smoke and Heat Vents > 910.5 Manually Activated Smoke Exhaust System
910.5.4 Fire Protection Systems, Wiring and Control
Wiring for operation and control of smoke exhaust fans shall be connected ahead of the main disconnect and protected against exposure to temperatures ...
Ohio Building Code 2011 > 9 Fire Protection Systems > 910 Smoke and Heat Vents > 910.5 Manually Activated Smoke Exhaust System > 910.5.4 Wiring and Control
910.5.6 Ohio Administrative Code 1301:7-7-09 Fire Protection Systems, Interlocks
Combination comfort air-handling/manually activated smoke exhaust systems are permitted. In combination comfort air-handling/manually activated smoke ...
Ohio Fire Code 2011 > Ohio Administrative Code 1301:7-7-09 Fire Protection Systems > 910 Smoke and Heat Vents > 910.5 Manually Activated Smoke Exhaust System > 910.5.6 Interlocks
910.5.3 Ohio Administrative Code 1301:7-7-09 Fire Protection Systems, Operation
Smoke exhaust fans shall be manually activated by individual manual controls ...
Ohio Fire Code 2011 > Ohio Administrative Code 1301:7-7-09 Fire Protection Systems > 910 Smoke and Heat Vents > 910.5 Manually Activated Smoke Exhaust System > 910.5.3 Operation