707.6 Openings.
BC § 707.6
Openings in a fire barrier shall be protected in accordance with Section 716. Openings shall be limited to a maximum aggregate width of 25 percent of the length of the wall, and the maximum area of any single opening shall not exceed 156 square feet (14.5 m 2 ). Openings in enclosures for exit access stairways and ramps, interior exit stairways and ramps and exit passageways shall also comply with Sections 1019, 1023.4 and 1024.5, respectively. Exceptions: 1. Openings shall not be limited to 156 square feet (14.5 m 2 ) where adjoining floor areas are equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.
2.Openings shall not be limited to 156 square feet (14.5 m 2 ) or an aggregate width of 25 percent of the length of the wall where the opening protective is a fire door serving enclosures for exit access stairways and ramps, and/or interior exit stairways and ramps.
3.Openings shall not be limited to 156 square feet (14.5 m 2 ) or an aggregate width of 25 percent of the length of the wall where the opening protective has been tested in accordance with ASTM E 119 or UL 263 and has a minimum fire-resistance rating not less than the fire-resistance rating of the wall.
4.Fire window assemblies permitted in atrium separation walls shall not be limited to a maximum aggregate width of 25 percent of the length of the wall.
5.Openings shall not be limited to 156 square feet (14.5 m 2 ) or an aggregate width of 25 percent of the length of the wall where the opening protective is a fire door assembly in a fire barrier separating an enclosure for exit access stairways and ramps, and/or interior exit stairways and ramps from an exit passageway in accordance with Section 1023.3.1.
6.Openings permitted in atrium enclosures shall comply with the provisions of Section 404.5.
