CBC · California Building Code
Masonry
Chapter 21 of the CBC governs masonry materials, design, construction and quality assurance, with seismic rules, specialty sections, and a state-specific Chapter 21A for DSA/OSHPD projects.
Last reviewed: July 5, 2026
Overview
Chapter 21 of the California Building Code (CBC) establishes the minimum requirements for masonry materials, design methods, construction and quality assurance; it also covers special masonry types such as glass-unit masonry, fireplaces, heaters and chimneys. The chapter sets out design methodologies (allowable-stress, strength, empirical), referenced standards, and execution details that affect structural performance, fire resistance and durability.
Key provisions you’ll commonly use include §2101 (General), §2103 (Masonry construction materials), §2104 (Construction), §2105 (Quality assurance), §2106 (Seismic design), §2107–§2108 (design methods), and specialty sections §2110–§2113 (glass unit masonry, fireplaces, heaters, chimneys); these sections orient the technical requirements and procedures designers and inspectors must follow. Chapter 21 also cross-references veneers (masonry veneer is covered in Chapter 14 and by §2101.2.1) and includes a state-specific Chapter 21A that applies to DSA/OSHPD projects with additional provisions and prohibitions.
In this section
Code references
Grounded in the retrieved California Building Code — click a citation to read the verbatim passage:
CBC § 1.11. Medium relevance — show source text
Adopting agency BSC BSC-
CGSFM HCD Col6 Col7 DSA Col9 Col10 OSHPD Col12 Col13 Col14 Col15 Col16 Col17 BSCC DPH AGR DWR CEC CA SL SLC Adopting agency BSC BSC-
CGSFM 1 2 1/AC AC SS SS/CC 1 1R 2 3 4 5 6 6 6 6 6 6 6 6 6 Adopt entire chapter X X X Adopt entire chapter as
amended (amended
sections listed below)Adopt only those sections
that are listed belowChapter / Section The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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21 A MASONRY
User notes:
About this chapter: Chapter 21A provides comprehensive and practical requirements for masonry construction. Chapter 21A is applicable to structures regulated by the Division of the State Architect-Structural Safety—including public elementary and secondary schools, community colleges, and state-owned or state-leased essential services buildings (applications listed in Sections 1.9.2.1
[DSA-SS] and 1.9.2.2 [DSA-SS/CC])—and by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development—including hospitals and correctional treatment centers (applications listed in Sections 1.10.1
[OSHPD 1] and 1.10.4 [OSHPD 4]).
SECTION 2101 A —GENERAL
2101 A .1 Scope. This chapter shall govern the materials, design, construction and quality of masonry.
CBC § 1.1 Medium relevance — show source text
1.1_|||||||||X||X|X|||X|||||||||| |2101.1.2|||||||||X||X|X|||X|||||||||| |2101.1.3|||||||||X||X|X|||X|||||||||| |2101.1.4|||||||||X|||||||||||||||| |2101.1.5|||||||||X|||||||||||||||| |2101.2|||||||||||X|X|||X|||||||||| |2101.2.2|||||||||||X|X|||X|||||||||| |2103.1|||||||||||X|X|||X|||||||||| |2103.4|||||||||||X|X|||X|||||||||| |2103.5|||||||||||X|X|||X|||||||||| |2103.6|||||||||||X|X|||X|||||||||| |2104.2|||||||||||X|X|||X|||||||||| |2104.3|||||||||||X|X|||X|||||||||| |2105.2|||||||||||X|X|||X|||||||||| |2105.3|||||||||||X|X|||X|||||||||| |2105.4|||||||||||X|X|||X|||||||||| |2106.1.1|||||||||||X|X|||X|||||||||| |2106.1.2|||||||||||X|X|||X|||||||||| |2106.1.3|||||||||||X|X|||X|||||||||| |2107.1|||||||||||X|X|||X|||||||||| |2107.5|||||||||||X|X|||X|||||||||| |2109|||||||||||X|X|||X|||||||||| |2109.2.4.8.2|||||||||||||||||||||X|||| |2110.1|||||||||||X|X|||X|||||||||| |2113.9.2|||X|||||||||||||||||||||| |2115|||||||||X||||||||||||||||
The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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21 MASONRY
User notes:
About this chapter: Chapter 21 establishes minimum requirements for masonry construction. The provisions address: material specifications and test methods; types of wall construction; criteria for engineered and empirical designs; and required details of construction, including the execution of construction. The provisions provide a framework for applying applicable standards to the design and construction of masonry structures. Masonry design methodologies including allowable stress design, strength design and empirical design are covered by the provisions of this chapter. Also addressed are masonry fireplaces and chimneys, masonry heaters and glass unit masonry.
ICC code development note: Code change proposals to this chapter will be considered by the IBC—Structural Code Development Committee during the
2025 (Group B) Code Development Cycle.
CBC § 1.11. Medium relevance — show source text
The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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21 A MASONRY
User notes:
About this chapter: Chapter 21A provides comprehensive and practical requirements for masonry construction. Chapter 21A is applicable to structures regulated by the Division of the State Architect-Structural Safety—including public elementary and secondary schools, community colleges, and state-owned or state-leased essential services buildings (applications listed in Sections 1.9.2.1
[DSA-SS] and 1.9.2.2 [DSA-SS/CC])—and by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development—including hospitals and correctional treatment centers (applications listed in Sections 1.10.1
[OSHPD 1] and 1.10.4 [OSHPD 4]).
SECTION 2101 A —GENERAL
2101 A .1 Scope. This chapter shall govern the materials, design, construction and quality of masonry.
2101A.1.1 Application. The scope of application of Chapter 21A is as follows: 1. Structures regulated by the Division of the State Architect-Structural Safety (DSA-SS), which include those applications listed in Section 1.9.2.1. These applications include public elementary and secondary schools, community colleges and state- owned or state-leased essential services buildings. 2. Applications listed in Sections 1.10.1 and 1.10.4 regulated by the Department of Health Care Access and Information/Office of Statewide Hospital Planning and Development (OSHPD). These applications include hospitals and correctional treatment
centers.
2101A.1.2 Amendments in this chapter. DSA-SS and OSHPD 1 & 4 adopt this chapter and all amendments.
Exception: Amendments adopted by only one agency appear in this chapter preceded with the appropriate acronym of the adopt- ing agency, as follows: 1. Division of the State Architect-Structural Safety:
[DSA-SS] For applications listed in Section 1.9.2.1. 2. Office of Statewide Hospital Planning and Development:
[OSHPD 1] - For applications listed in Section 1.10.1.
[OSHPD 4] - For applications listed in Section 1.10.4.
2101A.1.3 Prohibition. The following design methods, systems and materials in TMS 402/602 are not permitted by DSA-SS and OSHPD:
1. Unreinforced masonry. 2. Autoclaved aerated concrete (AAC) masonry. 3. Empirical design of masonry.
4. Adobe construction.
CBC § 1.9.2.1 Medium relevance — show source text
Chapter 19 Concrete.
Chapter 19 provides minimum accepted practices for the design and construction of buildings and structural components using concrete, both plain and reinforced. This chapter relies primarily on the reference to American Concrete Institute (ACI) 318, Building Code Requirements for Structural Concrete .
Chapter 19A Concrete.
Chapter 19A provides minimum accepted practices for the design and construction of buildings and structural components using concrete, both plain and reinforced. Chapter 19A is applicable to structures regulated by the Division of the State Architect—Structural Safety, which include public elementary and secondary schools, community colleges, and state-owned or state-leased essential services buildings (applications listed in Section 1.9.2.1 (DSA-SS)), and by the Department of Health Care Access and Information/Office of State- wide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1) and 1.10.4 (OSHPD 4)).
Chapter 20 Aluminum.
Chapter 20 contains standards for the use of aluminum in building construction. This chapter references national standards from the Aluminum Association (AA) for use of aluminum in building construction, AA ASM 35, Aluminum Sheet Metal Work in Building Construc- tion, and AA ADM, Aluminum Design Manual .
Chapter 21 Masonry.
Chapter 21 provides comprehensive and practical requirements for masonry construction.
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Chapter 21A Masonry.
Chapter 21A provides comprehensive and practical requirements for masonry construction. Chapter 21A is applicable to structures regu- lated by the Division of the State Architect—Structural Safety, which include public elementary and secondary schools, community colleges, and state-owned or state-leased essential services buildings (applications listed in Section 1.9.2.1 (DSA-SS)), and by the Depart- ment of Health Care Access and Information/Office of Statewide Hospital Planning and Development, which include hospitals and correctional treatment centers (applications listed in Sections 1.10.1 (OSHPD 1) and 1.10.4 (OSHPD 4)).
Chapter 22 Steel.
Chapter 22 provides the requirements necessary for the design and construction of structural steel (including composite construction), cold-formed steel, steel joists, steel cable structures and steel storage racks. Chapter 22 requires that the design and use of steel materials be in accordance with the specifications and standards of the American Institute of Steel Construction, the American Iron and Steel Institute, the Steel Joist Institute and the American Society of Civil Engineers.
Chapter 22A Steel.
CBC § 2101.1 Medium relevance — show source text
2025 (Group B) Code Development Cycle.
SECTION 2101—GENERAL
2101.1 Scope. This chapter shall govern the materials, design, construction and quality of masonry.
2101.1.1 Application. [DSA-SS/CC, OSHPD] The scope of application of Chapter 21 is as follows: 1. Structures regulated by the Division of the State Architect—Structural Safety/Community Colleges (DSA-SS/CC) which include those applications listed in Section 1.9.2.2. 2. Structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital planning and development (OSHPD), which include hospital buildings removed from general acute care service, skilled nursing facility buildings, intermediate care facility buildings and acute psychiatric hospital buildings listed in Sections 1.10.1, 1.10.2 and 1.10.5.
2101.1.2 Amendments in this chapter. [DSA-SS/CC, OSHPD] DSA-SS/CC, OSHPD adopt this chapter as amended.
2101.1.3 Identification of amendments. [DSA-SS/CC, OSHPD] 1. [DSA-SS/CC] Division of the State Architect - Structural Safety/Community Colleges amendments appear in this chapter preceded by the appropriate acronym, as follows:
[DSA-SS/CC] – For applications listed in Section 1.9.2.2. 2. [OSHPD 1R, 2 & 5] Office of Statewide Hospital Planning and Development (OSHPD) amendments appear in this chapter preceded by the appropriate acronym, as follows:
[OSHPD 1R ] - For applications listed in Section 1.10.1.
[OSHPD 2] - For applications listed in Section 1.10.2.
[OSHPD 5] - For applications listed in Section 1.10.5.
2101.1.4 Reference to other chapters. [DSA-SS/CC] Where reference within this chapter is made to sections in Chapters 17 and 18, the provisions in Chapters 17A and 18A respectively shall apply instead.
2101.1.5 Additional amendments. [DSA-SS/CC] See Section 2115 for additional requirements.
2101.2 Design methods. Masonry shall comply with the provisions of TMS 402, TMS 403 or TMS 404 as well as applicable requirements of this chapter. [OSHPD 1R, 2 & 5] TMS 403 Not permitted by OSHPD.
2101.2.1 Masonry veneer. Masonry veneer shall comply with the provisions of Chapter 14.
2101.2.2 Prohibition. [OSHPD 1R, 2 & 5] The following design methods, systems and materials in TMS402/602 are not permitted by OSHPD:
1. Unreinforced masonry. 2. Autoclaved Aerated Concrete (AAC) Masonry. 3. Empirical design of masonry.
4. Adobe construction.
CBC § 1.1.11. Medium relevance — show source text
Chapter 10 Change of Occupancy.
The purpose of Chapter 10 is to address existing buildings that are subject to a change of occupancy. This chapter is an assembly of requirements to upgrade safety without having to comply fully as a new building. A change of occupancy classification is considered a change of occupancy, however, it will involve a higher level of regulation since the use of the building has made a more significant change.
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Chapter 11 Additions.
Chapter 11 provides the requirements for additions, which are considered new construction. The requirements focus on safely integrating the addition with the existing building. This includes issues such as limiting the overall height and area of the building where the addition is not separated by a fire wall.
Chapter 12 Historic Buildings —Reserved
Chapter 12 is not adopted by the State of California. Historic buildings and structures shall comply with Part 8, Title 24, California Code of Regulations.
Chapter 13 Performance Compliance Methods.
Chapter 13 allows for existing buildings to be evaluated to show that alterations or a change of occupancy, while not meeting new construction requirements, will provide a level of safety to demonstrate compliance. Provisions are based on a numerical scoring system involving 21 safety parameters where, when evaluated, such buildings must meet a minimum overall safety score.
Chapter 13 is not adopted by the State of California but may be available for adoption by local ordinance, see Section 1.1.11. See Section 104.11 for consideration of alternative means of compliance.
Chapter 14 Relocated or Moved Buildings.
Chapter 14 is applicable to any building that is moved or relocated. This chapter is independent of any of the three compliance methods and focuses on the structural loads where the building is being relocated.
Chapter 15 Construction Safeguards.
Chapter 15 establishes specific regulations in order to minimize the risk to the public and adjacent property during construction. Additionally, this chapter addresses fire and life safety and means of egress during the construction process. This includes requirements for a site safety plan. This chapter is also consistent with Chapter 33 of the CBC and Chapter 33 of the California Fire Code (CFC).
Chapter 16 Referenced Standards.
Chapter 16 lists all of the product and installation standards and codes that are referenced throughout Chapters 1 through 15 and includes identification of the promulgators and the section numbers in which the standards and codes are referenced. As stated in Section 102.4, these standards and codes become an enforceable part of the code (to the prescribed extent of the reference) as if printed in the body of the code.
Appendix A Guidelines for the Seismic Retrofit of Existing Buildings.
Appendix A provides guidelines for upgrading the seismic resistance capacity of different types of existing buildings. It is organized into separate chapters which deal with buildings of different types, including unreinforced masonry buildings, reinforced concrete and reinforced masonry wall buildings, and lightframe wood buildings. This appendix includes its own referenced standards.
Appendix B Supplementary Accessibility Requirements for Existing Buildings and Facilities.
Chapters 11A and 11B of the CBC contain provisions that set forth requirements for accessibility to buildings and their associated sites and facilities for people with physical disabilities. Appendix B was added to address accessibility in construction for items that are not typically enforceable through the traditional building code enforcement process.
Appendix C Guidelines for the Wind Retrofit of Existing Buildings.
CBC § 2109.2.4.8.2 Medium relevance — show source text
5_|||||||||||X|X|||X|||||||||| |2109|||||||||||X|X|||X|||||||||| |2109.2.4.8.2|||||||||||||||||||||X|||| |2110.1|||||||||||X|X|||X|||||||||| |2113.9.2|||X|||||||||||||||||||||| |2115|||||||||X||||||||||||||||
The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.
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21 MASONRY
User notes:
About this chapter: Chapter 21 establishes minimum requirements for masonry construction. The provisions address: material specifications and test methods; types of wall construction; criteria for engineered and empirical designs; and required details of construction, including the execution of construction. The provisions provide a framework for applying applicable standards to the design and construction of masonry structures. Masonry design methodologies including allowable stress design, strength design and empirical design are covered by the provisions of this chapter. Also addressed are masonry fireplaces and chimneys, masonry heaters and glass unit masonry.
ICC code development note: Code change proposals to this chapter will be considered by the IBC—Structural Code Development Committee during the
2025 (Group B) Code Development Cycle.
SECTION 2101—GENERAL
2101.1 Scope. This chapter shall govern the materials, design, construction and quality of masonry.
2101.1.1 Application. [DSA-SS/CC, OSHPD] The scope of application of Chapter 21 is as follows: 1. Structures regulated by the Division of the State Architect—Structural Safety/Community Colleges (DSA-SS/CC) which include those applications listed in Section 1.9.2.2. 2. Structures regulated by the Department of Health Care Access and Information/Office of Statewide Hospital planning and development (OSHPD), which include hospital buildings removed from general acute care service, skilled nursing facility buildings, intermediate care facility buildings and acute psychiatric hospital buildings listed in Sections 1.10.1, 1.10.2 and 1.10.5.
2101.1.2 Amendments in this chapter. [DSA-SS/CC, OSHPD] DSA-SS/CC, OSHPD adopt this chapter as amended.
2101.1.3 Identification of amendments. [DSA-SS/CC, OSHPD] 1. [DSA-SS/CC] Division of the State Architect - Structural Safety/Community Colleges amendments appear in this chapter preceded by the appropriate acronym, as follows:
[DSA-SS/CC] – For applications listed in Section 1.9.2.2. 2. [OSHPD 1R, 2 & 5] Office of Statewide Hospital Planning and Development (OSHPD) amendments appear in this chapter preceded by the appropriate acronym, as follows:
CBC § 802.3 Medium relevance — show source text
Decorative materials 419, 802.3, 806 Floor finish 804, 805 Foam plastic insulation 2603.3, 2603.4 Foam plastic trim 806.6.1, 2604.2 Insulation 807 Light-transmitting plastics 2606 Signs 402.6.4, 2611 Site-fabricated stretch systems 803.10 Trim 806.6, 806.7 Wall and ceiling finishes 803 Wet location 1210 Intermodal Shipping Container 3114 Interpretation, Code 104.1
Jails [see Institutional (see Group I-3)] 308.5, 408 Joint Gypsum board 2508.5 Lumber sheathing 2308.11.10 Waterproofing 1805.3.3 Joints, Fire-resistant Systems 715 Special inspection 1705.18
Kiosks 402.6.2
Kitchens 303.3, 306.2 Accessibility 1133A, 11B-212 Dimensions 1209 Means of egress 1016.2 Occupant load Table 1004.5 Sinks Chapter 29
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INDEX
Marquees 3106, H113 Construction 3106.5
Drainage, water 3201.4 Live load Table 1607.1, 1607.14 Prohibited location 3106.4
Roof construction 3106.3 Masonry Chapter 21A Adhered veneer 1404.11
Adobe 2109 Anchorage 1604.8.2 Anchored veneer 1404.7
Architectural cast stone 2103.1
Calculated fire resistance 722.4 Chimneys 2113 Construction 2104 Dampproofing 1805.2.2 Design, methods 2101.2, 2107, 2108, 2109
Fire resistance, calculated 722.3.2,
722.3.4
Fireplaces 2111 Floor anchorage 1604.8.2 Foundation walls 1807.1.5
Foundations, adobe 2109.2.4.5 Glass unit 2110
Heaters 2112
Inspection, special 1705.4 Joint reinforcement 2103.4
Materials 603.1, 2103 Penetrations 714 Quality assurance 2105 Rodentproofing Appendix F Roof anchorage 1604.8.1 Seismic provisions 2106 Serviceability 1604.3.4 Supported by wood 2104.1.1, 2304.13 Surface bonding 2103.2.2 Veneer 1404.11, 1404.7, 2101.2.1,
2308.10.10 Wall anchorage 1604.8.2 Waterproofing 1805.3.2 Mass Notification Systems 917 Mass Timber 508, 509, 602, 703, 718, 722 Materials
Alternates 104.2.3
CBC § 19A-9 Medium relevance — show source text
1910A Concrete, Reinforcement and Anchor Testing . . . . .19A-9
1911A Existing Concrete Structures. . . . . . . . . . . . . . . . . . . 19A-10
CHAPTER 20 ALUMINUM . . . . . . . . . . . . . . . . . . . . . . . . . . 20-1
2001 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-3
2002 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-3
2003 Testing and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . .20-3
CHAPTER 21 MASONRY . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-1
2101 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-3
2102 Notations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-4
2103 Masonry Construction Materials . . . . . . . . . . . . . . . . 21-4
2104 Construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-5
2105 Quality Assurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-6
2106 Seismic Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-7
2107 Allowable Stress Design. . . . . . . . . . . . . . . . . . . . . . . . 21-8
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CONTENTS
2108 Strength Design of Masonry . . . . . . . . . . . . . . . . . . . . 21-8
2109 Empirical Design of Adobe Masonry . . . . . . . . . . . . . 21-9
2110 Glass Unit Masonry . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-11
2111 Masonry Fireplaces . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-11
2112 Masonry Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-13
CBC § 2.1 Medium relevance — show source text
2101 A .2.1 Masonry veneer. Masonry veneer shall comply with the provisions of Chapter 14.
2101 A .3 Special inspection. The special inspection of masonry shall be as defined in Chapter 17 A, or an itemized testing and inspection program shall be provided that meets or exceeds the requirements of Chapter 17 A .
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MASONRY
SECTION 2102 A —NOTATIONS
2102 A .1 General. The following notations are used in the chapter:
NOTATIONS .
d b = Diameter of reinforcement, inches (mm).
F s = Allowable tensile or compressive stress in reinforcement, psi (MPa).
f r = Modulus of rupture, psi (MPa).
f s = Computed stress in reinforcement due to design loads, psi (MPa).
L s = Distance between supports, inches (mm).
l d = Required development length or lap length of reinforcement, inches (mm).
P = The applied load at failure, pounds (N).
S t = Thickness of the test specimen measured parallel to the direction of load, inches (mm).
S w = Width of the test specimen measured parallel to the loading cylinder, inches (mm).
SECTION 2103 A —MASONRY CONSTRUCTION MATERIALS
2103 A .1 Masonry units. Concrete masonry units, clay or shale masonry units, stone masonry units, glass unit masonry shall comply with Article 2.3 of TMS 602. Architectural cast stone shall conform to TMS 504. Architectural 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 263 and shall comply with the requirements of Table 705.5.
2103 A .1.1 Second-hand units. Second-hand masonry units shall not be reused unless they conform to the requirements of new units. The units shall be of whole, sound materials and free from cracks and other defects that will interfere with proper laying or use. Old mortar shall be cleaned from the unit before reuse.
2103 A .2 Mortar. Mortar for masonry construction shall comply with Section 2103 A .2.1, 2103 A .2.2, 2103 A .2.3 or 2103 A .2.4.
2103 A .2.1 Masonry mortar. Mortar for use in masonry construction shall conform to Articles 2.1 and 2.6 A of TMS 602.
2103 A .2.2 Surface-bonding mortar. Surface-bonding mortar shall comply with ASTM C887. Surface bonding of concrete masonry units shall comply with ASTM C946.
CBC § 04-15 Medium relevance — show source text
. . . . . . . . . . . . . . . . . . . UG-1: Services/Greenbook . . . . . . . . . . . . . . . . . . 063927 Methods and Requirements for Installing Commercial Underground Electric Services 0−600 Volts to Customer-Owned Facilities . . . . . . . . . . . . . . . . . . . . UG-1: Services/Greenbook . . . . . . . . . . . . . . . . . . 063928
Table 1 Description of Items to be Furnished and Installed by Customer Item Description 1 Option 1: Meter Adapter, Cooper B-Line Cat. No. MARR20L45GRSD
(160A) Use with Customer’s Panel Rated at 160A Continuous1, 21 Option 2: Meter Adapter, Ekstrom Industries No. 722B (175A). Specify Left, Right, or Bottom Hub 2 Combination Service Meter and Breaker Panel (rating as required) 3 Pull Termination Box, 8” x 12” x 4”, Rain-Tight, Circle A-W (Cooper B-Line) No. R-9007A or Equivalent (see Note
4M on Page 2)4 Conduit, See Notes 4C and 4G on Page 1 5 Hub to Be Closed and Made Tamper Proof 6 Pull Termination Box, 12” x 26” x 6”, Rain-Tight, Circle A-W Catalog Number R-90008, or Equivalent
(see Note 4K on Page 2)1 Fifth jaw accessory, use Cooper B-Line Cat. No. 50365. 2 Reducer hub and gasket accessories for 2” conduit, use Cooper B-Line Cat. No. AW200 and 12750A.
061032 Page 2 of 4 Rev. #04: 04-15-11
UG-1: Services Greenbook Residential and Small Commercial Overhead to Underground Electric Service Conversion
CBC § 2.6 Medium relevance — show source text
Fire district D102.2.6, D102.1 Fire-resistance ratings 703, 705.5, Table 705.5, 706.5.1, 707.4, 1402.4 Flashing, veneered walls 1404.11.1, 1404.4
Foam plastic insulation 2603.4.1.4, 2603.5 Glazing, rated 715.8 Joints 705.10, 714 Light-transmitting plastic panels 2607 Materials 705.4, 1403.1, 1405 Metal composite material (MCM) 1406 Nonbearing Chapter 6 Opening protection 705.11, 705.9, 716.2.5.4
Parapets 705.12 Performance requirements 1402 Projections 705.2 Structural stability 705.7 Vapor retarders 1404.3 Veneer (see Veneer) Weather resistance 1402.2, 1404.2, 1406.6, 1407.4 Weather-resistant barriers 1404.2 Wall, Fire (see Fire Walls) Wall, Foundation (see Foundations) Wall, Interior Finishes 803, 1210.2 Opening protection 716, 717 Wall, Interior Nonbearing (See Partitions) Wall, Masonry 202 Wood Contact 2304.12.1.3,
2304.12.2.1
Wall, Parapet 705.12, 1503.3, 2109.2.4.3 Wall, Party (See Fire Walls) Wall, Penetrations 714.4 Wall, Retaining (See Retaining Wall) Wall, Veneered (See Veneer) Chapter 14 Wall, Wood Construction Bracing 2308.10 Cripple walls 2308.9.6 Cutting, notching and boring of dimensional wood framing 2308.6 Exterior framing 2308.9 Fastening schedule Table 2304.10.2 Framing 2304.3, 2308.9 Hillside light-frame construction 2308.2.7 Interior bearing partition 2308.9.4 Interior nonbearing partition 2308.9.1 Openings 2308.9.5 Shear walls 2305.1, 2306.3 Sheathing (see Sheathing) Studs 2308.9.1 Top plates 2308.9.3.2 Waste, Construction 420.12 Water-Reactive Materials Table 307.1(1), 307.4, 307.5. 415.8.4
Weather Protection
Exterior walls 1404.2
Roofs 1503 Welding Materials, verification of steel reinforcement 1705.3.2 Special inspections 1705.13.3, 1705.2, 1705.3.1 Splices of reinforcement in masonry 2107.3, 2108.3 Wildland-Urban Interface 101.4.8
Wind Load 1609 Basic design wind speed 1609.3 Construction documents
107, 1603.1.4 Exposure category 1609.4 Glazing 1609.2, 2404 Hurricane 1507.1.1 Masonry,
Frequently asked questions
What parts of the CBC apply to seismic design of masonry?
Seismic design requirements are concentrated in §2106 (Seismic design) and are implemented alongside the referenced TMS standards called out in the chapter; consult §2106 and the TMS references for detailing, reinforcement, and special inspection obligations.
Where are masonry veneers regulated?
Masonry veneers are regulated by Chapter 14; Chapter 21 cross-references veneer requirements and §2101.2.1 specifically directs masonry veneer compliance to Chapter 14.
Does Chapter 21A differ from Chapter 21?
Yes. Chapter 21A contains amendments and additional requirements that apply to projects under the Division of the State Architect and OSHPD (for example, scope and prohibitions for certain design methods and materials), so verify whether your project is subject to Chapter 21A.
More in California Building Code
- Accessibility
- Administration & Permits
- Concrete
- Elevators & Conveying Systems
- Energy Efficiency
- Existing Buildings
- Exterior Walls
- Fire-Resistance & Fire Safety
- Foundations & Soils
- Hazardous Materials & Occupancies
- Interior Finishes
- Masonry
- Means of Egress
- Occupancy Classification & Use
- Roofing & Roof Assemblies
- Special Inspections & Tests
- Steel
- Structural Design
- Types of Construction
- Wood
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