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NYC Building Code

§ 2308.4.2.4 — § 2308.4.2.4

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What is NYC BC § 2308.4.2.4?

Quick Answer

This section outlines the limitations on notches and holes in joists, specifying maximum dimensions and locations to ensure structural integrity. The statute prohibits notches exceeding one-fourth or one-sixth of the joist depth and regulates the placement of holes. Applies to building owners involved in structural modifications or inspections.

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

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2308.4.2.4 Notches and holes.

BC § 2308.4.2.4

Notches on the ends of joists shall not exceed one-fourth the joist depth. Notches in the top or bottom of joists shall not exceed one-sixth the depth, shall not be longer than one-third the depth and shall not be located in the middle third of the span. Holes bored in joists shall not be within 2 inches (51 mm) of the top or bottom of the joist and the diameter of any such hole shall not exceed one-third the depth of the joist. Holes bored in the middle third of the span shall be located at the center of the joist depth. Clear distance between holes & notches shall be a minimum of 2 inches (51 mm). See Figure 2308.4.2.4. Figure 2308.4.2.4Joist Boring and Notching LimitsNot to Scale

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