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// CODE SNIPPET

705.8.4 Mixed Openings

Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 705 Exterior Walls > 705.8 Openings > 705.8.4 Mixed Openings
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Where both unprotected and protected openings are located in the exterior wall in any story of a building, the total area of openings shall be determined in accordance with the following:
(Equation 7-2)
where:
Ap = Actual area of protected openings, or the equivalent area of protected openings, Ae (see Section 705.7).
ap = Allowable area of protected openings.
Au = Actual area of unprotected openings.
au = Allowable area of unprotected openings.

Related Code Sections


705.8.4 Fire and Smoke Protection Features, Mixed Openings
Where both unprotected and protected openings are located in the exterior wall in any story of a building, the total area of openings shall ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 705 Exterior Walls > 705.8 Openings > 705.8.4 Mixed Openings
705.8.4 Fire and Smoke Protection Features, Mixed Openings
Where both unprotected and protected openings are located in the exterior wall in any story of a building, the total area of openings shall ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 705 Exterior Walls > 705.8 Openings > 705.8.4 Mixed Openings
415.6.1 Special Detailed Requirements Based on Occupancy and Use, Rooms for Flammable or Combustible Liquid Use, Dispensing or Mixing in Open Systems
Rooms for flammable or combustible liquid use , dispensing or mixing in open systems having a floor area of not more than 500 square feet ...
Building Code 2021 of Illinois > 4 Special Detailed Requirements Based on Occupancy and Use > 415 Groups H-1, H-2, H-3, H-4 and H-5 > 415.6 Fire Separation Distance > 415.6.1 Rooms for Flammable or Combustible Liquid Use, Dispensing or Mixing in Open Systems
507.8.1.1.1 General Building Heights and Areas, Rooms for Flammable or Combustible Liquid Use, Dispensing or Mixing in Open Systems
Rooms for flammable or combustible liquid use, dispensing or mixing in open systems having a floor area of not more than 500 ...
Building Code 2021 of Illinois > 5 General Building Heights and Areas > 507 Unlimited Area Buildings > 507.8 Group H-2, H-3 and H-4 Occupancies > 507.8.1 Allowable Area > 507.8.1.1 Located Within the Building > 507.8.1.1.1 Rooms for Flammable or Combustible Liquid Use, Dispensing or Mixing in Open Systems
406.2.8 Special Detailed Requirements Based on Occupancy and Use, Mixed Occupancies and Uses
Mixed uses shall be allowed in the same building as public parking garages and repair garages in accordance with Section 508.1. Mixed uses ...
Building Code 2021 of Illinois > 4 Special Detailed Requirements Based on Occupancy and Use > 406 Motor-Vehicle-Related Occupancies > 406.2 Design > 406.2.8 Mixed Occupancies and Uses
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