Chapter 21 — MASONRY

Section 2108 — STRENGTH DESIGN OF MASONRY

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

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2108.1 General.

2108.1 General. The design of masonry structures using strength design shall comply with Section 2106 and the requirements of Chapters 1 through 7 and Chapter 9 of TMS 402, except as modified by Sections 2108.2 through 2108.3. Exception: AAC masonry shall comply with the requirements of Chapters 1 through 7 and Chapter 11 of TMS 402.

2108.2 TMS 402, Section 6.1.6, development.

2108.2 TMS 402, Section 6.1.6, development. Add a second paragraph to Section 6.1.6 as follows: The required development length of reinforcement need not be greater than 72 d b .

2108.3 TMS 402, Section 6.1.6.1.1, splices.

2108.3 TMS 402, Section 6.1.6.1.1, splices. Add to Sections 6.1.7.2.1 and 6.1.7.3.1 as follows: 6.1.7.3.1 – Welded splices shall not be permitted in plastic hinge zones of intermediate or special reinforced walls. 6.1.7.2.1 – Mechanical splices shall be classified as Type 1 or 2 in accordance with Section 18.2.7.1 of ACI 318. Type 1 mechanical splices shall not be used within a plastic hinge zone or within a beam-column joint of intermediate or special reinforced masonry shear walls. Type 2 mechanical splices are permitted in any location within a member. 21-8 2025 CALIFORNIA BUILDING CODE on…