Section 2103 — MASONRY CONSTRUCTION MATERIALS — 2025 California Building Code (Title 24, Part 2)

2103.1 Masonry units. ¶

2103.1 Masonry units. Concrete masonry units, clay or shale masonry units, stone masonry units, glass unit masonry and AAC masonry units shall comply with Article 2.3 of TMS 602. Architectural cast stone shall conform to TMS 504. [OSHPD 1R, 2 & 5] Architec- tural cast stone construction shall be considered as an alternative system. Exception: Structural clay tile for nonstructural use in fireproofing of structural members and in wall furring shall not be required to meet the compressive strength specifications. The fire-resistance rating shall be determined in accordance with ASTM E119 or UL…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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2103.2 Mortar. ¶

2103.2 Mortar. Mortar for masonry construction shall comply with Section 2103.2.1, 2103.2.2, 2103.2.3 or 2103.2.4. 2103.2.1 Masonry mortar. Mortar for use in masonry construction shall conform to Articles 2.1 and 2.6 A of TMS 602. 2103.2.2 Surface-bonding mortar. Surface-bonding mortar shall comply with ASTM C887. Surface bonding of concrete masonry units shall comply with ASTM C946. 2103.2.3 Mortars for ceramic wall and floor tile. Portland cement mortars for installing ceramic wall and floor tile shall comply with ANSI A108.1A and ANSI A108.1B and be of the compositions indicated in Table…

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use

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2103.3 Grout. Grout shall comply with Article 2.2 of TMS 602. ¶

2103.3 Grout. Grout shall comply with Article 2.2 of TMS 602.

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2103.4 Metal reinforcement and accessories. ¶

2103.4 Metal reinforcement and accessories. Metal reinforcement and accessories shall conform to Article 2.4 of TMS 602. Where unidentified reinforcement [OSHPD 1R, 2 & 5] , or bar reinforcement without mill certification, is approved for use, not less than three tension and three bending tests shall be made on representative specimens of the reinforcement from each shipment and grade of reinforcing steel proposed for use in the work. [OSHPD 1R, 2 & 5] Alternatively, the frequency of sampling for unidentifiable reinforcing bars specified in Section 1910.2 can be used.

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum

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2103.5 Air entrainment. ¶

2103.5 Air entrainment. [OSHPD 1R, 2 & 5] Air-entraining materials or air-entraining admixtures shall not be used in grout.

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2103.6 Specified compressive strength of masonry and grout . ¶

2103.6 Specified compressive strength of masonry and grout . [OSHPD 1R, 2 & 5] Replace TMS 402 Table 4.3.1 by the following: TABLE 4.3.1—SPECIFIED COMPRESSIVE STRENGTH REQUIREMENTSCol2Col3 --------- TYPE OF MASONRYSPECIFIED COMPRESSIVE STRENGTH OF MASONRYSPECIFIED COMPRESSIVE STRENGTH OF GROUT Concrete masonry2,000 psi (13.79 MPa) ≤ f'm ≤ 3,000 psi (20.68 MPa)f'g ≥ f'm ≤ 5,000 psi (34.47 MPa) Clay masonry1,500 psi (10.34 MPa) ≤ f'm ≤ 4,500 psi (31.02 MPa)f'g≤ 6,000 (41.37 MPa)

provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision permitted lot commission district approval parking minimum height dwelling application requirement review coverage subject setback occupancy development standard accessory yard section structure compliance use provision

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