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602.4.8 Partitions and Walls

Building Code 2015 of Utah > 6 Types of Construction > 602 Construction Classification > 602.4 Type IV > 602.4.8 Partitions and Walls

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Partitions and walls shall comply with Section 602.4.8.1 or 602.4.8.2.

602.4.8.1 Interior Walls and Partitions

Interior walls and partitions shall be of solid wood construction formed by not less than two layers of 1-inch (25 mm) matched boards or laminated construction 4 inches (102 mm) thick, or of 1-hour fire-resistance-rated construction.

602.4.8.2 Exterior Walls

Exterior walls shall be of one of the following:

Noncombustible materials.
Not less than 6 inches (152 mm) in thickness and constructed of one of the following:
1. Fire-retardant-treated wood in accordance with Section 2303.2 and complying with Section 602.4.1.
2. Cross-laminated timber complying with Section 602.4.2.

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