4. Solutions for enclosed staircases
4.1 Natural sweeping smoke ventilation
The natural sweep of a staircase is achieved by opening a smoke vent with a geometric surface area of 1 m 2 or a smoke extraction opening with an identical free surface area, located in the upper part of the stairwell, and an air supply, as defined in § 2.3
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Solutions for enclosed staircases
Solutions for enclosed corridors
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