Chapter 21 — MASONRY

Section 2114 — DRY-STACK MASONRY

2025 California Building Code (Title 24, Part 2) · 2025 edition · ingested 2026-07-07 · California

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2114.1 General.

2114.1 General. The design of dry-stack masonry structures shall comply with the requirements of Chapters 1 through 8 of TMS 402 except as modified by Sections 2114.2 through 2114.5.

2114.2 Limitations. Dry-stack masonry shall be prohibited in Risk Category IV structures.

2114.2 Limitations. Dry-stack masonry shall be prohibited in Risk Category IV structures.

2114.3 Materials. Concrete masonry units complying with ASTM C90 shall be used.

2114.3 Materials. Concrete masonry units complying with ASTM C90 shall be used.

2114.4 Strength.

2114.4 Strength. Dry-stack masonry shall be of adequate strength and proportions to support all superimposed loads without exceeding the allowable stresses listed in Table 2114.4. Allowable stresses not specified in Table 2114.4 shall comply with the requirements of Chapter 8 of TMS 402. TABLE 2114.4—GROSS CROSS-SECTIONAL AREA ALLOWABLE STRESS FOR DRY-STACK MASONRYCol2 ------ DESCRIPTIONMAXIMUM ALLOWABLE STRESS (psi) Compression45 Flexural tension<brHorizontal span<brVertical span30<br18 Shear10 For SI: 1 pound per square inch = 0.006895 MPa.For SI: 1 pound per square inch = 0.006895 MPa.

2114.5 Construction. Construction of dry-stack masonry shall comply with ASTM C946.

2114.5 Construction. Construction of dry-stack masonry shall comply with ASTM C946.