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NYC Building Code

§ 2109.4.2 — § 2109.4.2

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What is NYC BC § 2109.4.2?

Quick Answer

This section establishes the minimum thickness requirements for masonry bearing walls in buildings based on their height and load specifications. For walls exceeding one story, a minimum thickness of 8 inches is required under certain conditions. Applies to building owners constructing or renovating multi-story structures.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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2109.4.2 Minimum thickness.

BC § 2109.4.2

The minimum thickness of masonry bearing walls more than one story high shall be 8 inches (203 mm) where the height floor to floor does not exceed 12 feet (3658 mm), the floor live load does not exceed 60 pounds per square foot (psf) (0.156 kg/m 2 ), and the roof is designed so that the dead load imparts no lateral thrust to the wall. Bearing walls of one-story buildings shall not be less than 6 inches (152 mm) thick. However, the overall thickness of cavity or masonry-bonded hollow walls shall not be less than 8 inches (203 mm), including cavity.

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