Chapter 21 — MASONRY

Section 2104 — CONSTRUCTION

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

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2104.1 Masonry construction.

2104.1 Masonry construction. Masonry construction shall comply with the requirements of Sections 2104.1.1 and 2104.1.2 and with the requirements of either TMS 602 or TMS 604. 2104.1.1 Support on wood. Masonry shall not be supported on wood girders or other forms of wood construction except as permitted in Section 2304.13. 2104.1.2 Molded cornices. Unless structural support and anchorage are provided to resist the overturning moment, the center of gravity of projecting masonry or molded cornices shall lie within the middle one-third of the supporting wall. Terra cotta and metal cornices shall…

2104.2 Reinforced Grouted masonry. [OSHPD 1R, 2 & 5]

2104.2 Reinforced Grouted masonry. [OSHPD 1R, 2 & 5] 2104.2.1 TMS 602, Article 3.3 B Placing mortar and units. Modify TMS 602, Article 3.3 B.2.c as follows: c. Remove masonry protrusions extending greater than [1] / 4 inch (6.4 mm) into cells or cavities to be grouted. 2104.2.2 TMS 602, Article 3.4 B Reinforcement. Modify TMS 602, Article 3.4 B.1 through Article 3.4 B.3 as follows: 1. Support reinforcement to prevent displacement caused by construction loads or by placement of grout or mortar. Rein- forcement and embedded items shall be clean, properly positioned and securely anchored against…

2104.3 Aluminum equipment.

2104.3 Aluminum equipment. [OSHPD 1R, 2 & 5] Grout shall not be handled nor pumped utilizing aluminum equipment unless it can be demonstrated with the materials and equipment to be used that there will be no deleterious effect on the strength of the grout.