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NYC Building Code

§ 2109.2.1 — § 2109.2.1

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What is NYC BC § 2109.2.1?

Quick Answer

This section outlines the required strength and proportions for dry-stacked, surface-bonded concrete masonry walls to support superimposed loads without exceeding specified allowable stresses. The requirements are detailed in Table 2109.2.1 and reference TMS 402 for additional stresses. Applies to building owners involved in masonry construction.

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

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2109.2.1 Strength.

BC § 2109.2.1

Dry-stacked, surface-bonded concrete masonry walls shall be of adequate strength and proportions to support all superimposed loads without exceeding the allowable stresses listed in Table 2109.2.1. Allowable stresses not specified in Table 2109.2.1 shall comply with the requirements of TMS 402. Table 2109.2.1Allowable Stress Gross Cross-Sectional Area for Dry-Stacked, Surface-Bonded Concrete Masonry Walls Description Maximum Allowable Stress (psi)Compression standard block45 Flexural tension Horizontal span30 Vertical span18 Shear10 For SI: 1 pound per square inch = 0.006895 Mpa.

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