// CODE SNIPPET
705.8.1 Allowable Area of Openings
JUMP TO FULL CODE CHAPTER
The maximum area of unprotected and protected openings permitted in an exterior wall in any story of a building shall not exceed the percentages specified in Table 705.8 based on the fire separation distance of each individual story.
- In other than Group H occupancies, unlimited unprotected openings are permitted in the first story above grade plane where the wall faces one of the following:
- A street and has a fire separation distance of more than 15 feet (4572 mm).
- An unoccupied space. The unoccupied space shall be on the same lot or dedicated for public use, shall be not less than 30 feet (9144 mm) in width and shall have access from a street by a posted fire lane in accordance with the International Fire Code.
- Buildings whose exterior bearing walls, exterior nonbearing walls and exterior primary structural frame are not required to be fire-resistance rated shall be permitted to have unlimited unprotected openings.
Related Code Sections
705.8.1 Fire and Smoke Protection Features, Allowable Area of Openings
The maximum area of unprotected and protected openings permitted in an exterior wall in any story of a building shall not exceed the percentages ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 705 Exterior Walls > 705.8 Openings > 705.8.1 Allowable Area of Openings
909.5.1 Fire Protection and Life Safety Systems, Total Leakage Area
Total leakage area of the barrier is the product of the smoke barrier gross area multiplied by the allowable leakage area ratio, plus the area ...
Building Code 2018 of Illinois > 9 Fire Protection and Life Safety Systems > 909 Smoke Control Systems > 909.5 Smoke Barrier Construction > 909.5.1 Total Leakage Area
406.5.5 Special Detailed Requirements Based on Occupancy and Use, Area and Height Increases
The allowable area and height of open parking garages shall be increased in accordance with the provisions of this section. Garages with sides open ...
Building Code 2018 of Illinois > 4 Special Detailed Requirements Based on Occupancy and Use > 406 Motor-Vehicle-Related Occupancies > 406.5 Open Parking Garages > 406.5.5 Area and Height Increases
1184.108.40.206 Interior Environment, Adjoining Spaces
for ventilation shall be allowed to open into a sunroom with thermal isolation or a patio cover provided that the openable area between the sunroom ...
Building Code 2018 of Illinois > 12 Interior Environment > 1202 Ventilation > 1202.5 Natural Ventilation > 1202.5.1 Ventilation Area Required > 1220.127.116.11 Adjoining Spaces