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909.20.5 Stair Pressurization Alternative
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Where the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, the vestibule is not required, provided that interior exit stairways are pressurized to a minimum of 0.10 inches of water (25 Pa) and a maximum of 0.35 inches of water (87 Pa) in the shaft relative to the building measured with all stairway doors closed under maximum anticipated conditions of stack effect and wind effect.
Related Code Sections
909.20.5 Fire Protection Systems, Stair Pressurization Alternative
, provided that interior exit stairways are pressurized to a minimum of 0.10 inches of water (25 Pa) and a maximum of 0.35 inches of water (87 Pa ...
Building Code 2012 of South Holland > 9 Fire Protection Systems > 909 Smoke Control Systems > 909.20 Smokeproof Enclosures > 909.20.5 Stair Pressurization Alternative
909.20.5 Fire Protection and Life Safety Systems, Stairway and Ramp Pressurization Alternative
, provided that each interior exit stairway or ramp is pressurized to not less than 0.10 inch of water (25 Pa) and not more than 0.35 inches of water ...
Building Code 2018 of South Holland > 9 Fire Protection and Life Safety Systems > 909 Smoke Control Systems > 909.20 Smokeproof Enclosures > 909.20.5 Stairway and Ramp Pressurization Alternative
1022.10.2 Means of Egress, Enclosure Access
is not required by way of a vestibule or exterior balcony for stairways using the pressurization alternative complying with Section 909.20.5.
...
Building Code 2012 of South Holland > 10 Means of Egress > 1022 Interior Exit Stairways and Ramps > 1022.10 Smokeproof Enclosures and Pressurized Stairways and Ramps > 1022.10.2 Enclosure Access
1022.10.2 Means of Egress, Enclosure Access
is not required by way of a vestibule or exterior balcony for stairways using the pressurization alternative complying with Section 909.20.5 ...
Fire Code 2012 of South Holland > 10 Means of Egress > 1022 Interior Exit Stairways and Ramps > 1022.10 Smokeproof Enclosures and Pressurized Stairways and Ramps > 1022.10.2 Enclosure Access
1023.11.2 Means of Egress, Enclosure Access
is not required by way of a vestibule or exterior balcony for stairways and ramps using the pressurization alternative complying with Section ...
Building Code 2018 of South Holland > 10 Means of Egress > 1023 Interior Exit Stairways and Ramps > 1023.11 Smokeproof Enclosures > 1023.11.2 Enclosure Access