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// CODE SNIPPET

1011.5.1.1 Fire Wall Alternative

Existing Building Code 2018 of Illinois > 10 Change of Occupancy > 1011 Change of Occupancy Classification > 1011.5 Heights and Areas > 1011.5.1 Height and Area for Change to a Higher-Hazard Category > 1011.5.1.1 Fire Wall Alternative
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In other than Groups H, F-1 and S-1, fire barriers and horizontal assemblies constructed in accordance with Sections 707 and 711, respectively, of the International Building Code shall be permitted to be used in lieu of fire walls to subdivide the building into separate buildings for the purpose of complying with the area limitations required for the new occupancy where all of the following conditions are met:
  1. The buildings are protected throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 of the International Fire Code.
  2. The maximum allowable area between fire barriers, horizontal assemblies, or any combination thereof shall not exceed the maximum allowable area determined in accordance with Chapter 5 of the International Building Code without an increase allowed for an automatic sprinkler system in accordance with Section 506 of the International Building Code.
  3. The fire-resistance rating of the fire barriers and horizontal assemblies shall be not less than that specified for fire walls in Table 706.4 of the International Building Code.
Exception: Where horizontal assemblies are used to limit the maximum allowable area, the required fire-resistance rating of the horizontal assemblies shall be permitted to be reduced by 1 hour provided that the height and number of stories increases allowed for an automatic sprinkler system by Section 504 of the International Building Code are not used for the buildings.

Related Code Sections


1011.5.1.1 Change of Occupancy, Fire Wall Alternative
, of the International Building Code shall be permitted to be used in lieu of fire walls to subdivide the building into separate buildings for the purpose ...
Existing Building Code 2018 of Illinois > 10 Change of Occupancy > 1011 Change of Occupancy Classification > 1011.5 Heights and Areas > 1011.5.1 Height and Area for Change to a Higher-Hazard Category > 1011.5.1.1 Fire Wall Alternative
1011.6.1.1 Change of Occupancy, Fire Wall Alternative
, of the International Building Code shall be permitted to be used in lieu of fire walls to subdivide the building into separate buildings for the purpose ...
Existing Building Code 2021 of Illinois > 10 Change of Occupancy > 1011 Change of Occupancy Classification > 1011.6 Heights and Areas > 1011.6.1 Height and Area for Change to a Higher-Hazard Category > 1011.6.1.1 Fire Wall Alternative
9.3.15* Sprinkler Location Requirements, Sprinkler-Protected Glazing
Where sprinklers are used in combination with glazing as an alternative to a required fire-rated wall or window assembly, the sprinkler-protected ...
Standard for the Installation of Sprinkler Systems 2019 of Illinois > 9 Sprinkler Location Requirements > 9.3 Special Situations > 9.3.15* Sprinkler-Protected Glazing
1408.11 Exterior Walls, Alternate Conditions
Where the fire separation distance is greater than 5 feet (1524 mm), the area of exterior wall surface coverage ...
Building Code 2021 of Illinois > 14 Exterior Walls > 1408 High-Pressure Decorative Exterior-Grade Compact Laminates (HPL) > 1408.11 Alternate Conditions
1406.11 Exterior Walls, Alternate Conditions
Where the fire separation distance is greater than 5 feet (1524 mm), the area of exterior wall surface coverage using ...
Building Code 2018 of Illinois > 14 Exterior Walls > 1406 Metal Composite Materials (MCM) > 1406.11 Alternate Conditions
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