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// CODE SNIPPET

713.4 Fire-Resistance Rating

Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 713 Shaft Enclosures > 713.4 Fire-Resistance Rating

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ILLUSTRATION

Shaft enclosures shall have a fire-resistance rating of not less than 2 hours where connecting four stories or more, and not less than 1 hour where connecting less than four stories. The number of stories connected by the shaft enclosure shall include any basements but not any mezzanines. Shaft enclosures shall have a fire-resistance rating not less than the floor assembly penetrated, but need not exceed 2 hours. Shaft enclosures shall meet the requirements of Section 703.2.1.

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