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Where the horizontal assembly separates mixed occupancies, the assembly shall have a fire-resistance rating of not less than that required by Section 508.4 based on the occupancies being separated.

Related Code Sections

707.3.9 Fire and Smoke Protection Features, Separated Occupancies
Where the provisions of Section 508.4 are applicable, the fire barrier separating mixed occupancies shall have a fire-resistance rating of not less ...
707.3.9 Fire and Smoke Protection Features, Separated Occupancies
Where the provisions of Section 508.4 are applicable, the fire barrier separating mixed occupancies shall have a fire-resistance rating of not less ...
1301.9.1 Performance Compliance Methods, Mixed Occupancies
For mixed occupancies, the following provisions shall apply: Where the separation between mixed occupancies does not qualify for any category ...