// CODE SNIPPET
722.2.2.2 Multicourse Floors
JUMP TO FULL CODE CHAPTER

The fire-resistance ratings of floors that consist of a base slab of concrete with a topping (overlay) of a different type of concrete shall comply with Figure 722.2.2.2.

For SI: 1 inch = 25.4 mm.
FIRE-RESISTANCE RATINGS FOR TWO-COURSE CONCRETE FLOORS
Related Code Sections
722.2.2.2 Fire and Smoke Protection Features, Multicourse Floors
The fire-resistance ratings of floors that consist of a base slab of concrete with a topping (overlay) of a different type of concrete shall comply ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.2 Concrete Assemblies > 722.2.2 Concrete Floor and Roof Slabs > 722.2.2.2 Multicourse Floors
722.2.2.2 Fire and Smoke Protection Features, Multicourse Floors
The fire-resistance ratings of floors that consist of a base slab of concrete with a topping (overlay) of a different type of concrete shall comply ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.2 Concrete Assemblies > 722.2.2 Concrete Floor and Roof Slabs > 722.2.2.2 Multicourse Floors
722.2.2.3 Fire and Smoke Protection Features, Multicourse Roofs
The fire-resistance ratings of roofs that consist of a base slab of concrete with a topping (overlay) of an insulating concrete ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.2 Concrete Assemblies > 722.2.2 Concrete Floor and Roof Slabs > 722.2.2.3 Multicourse Roofs
722.2 Fire and Smoke Protection Features, Concrete Assemblies
Reinforced and prestressed floors and roofs shall comply with Section 722.2.2.1. Multicourse floors and roofs shall comply with Sections 722.2.2.2 ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.2 Concrete Assemblies
722.2 Fire and Smoke Protection Features, Concrete Assemblies
722.2.2.1. Multicourse floors and roofs shall comply with Sections 722.2.2.2 and 722.2.2.3, respectively ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.2 Concrete Assemblies