CBC · California Building Code

What are seismic design and certification requirements for steel storage racks?

For a homeowner: California code requires storage racks designed to ANSI standards and, when ASCE 7 calls for seismic design, to follow ASCE 7 seismic rules. If racks are 8 feet or taller and in higher seismic categories (D, E or F) they must be periodically inspected and a certificate of compliance provided at completion.

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Last reviewed: July 5, 2026

What the code requires — 2-4 sentences

The California Building Code (CBC) requires that steel storage racks be designed and tested to the industry standards ANSI MH16.1 (and ANSI MH16.3 for cantilevered racks) and that, where ASCE 7 requires seismic design, rack seismic design follow ASCE 7 Section 15.5.3 (CBC § 2209.1 and § 2209.2). For racks 8 feet (2438 mm) or taller to the top load level located in Seismic Design Category D, E or F, a certificate of compliance must be submitted to the owner at completion confirming work performed per the approved documents (CBC § 2209.3) .

Requirements in detail

Governing standards and where CBC points you

  • Design and testing standard: ANSI MH16.1 for typical steel storage racks; ANSI MH16.3 for cantilevered racks — CBC § 2209.1 .
  • Seismic design standard: Where ASCE 7 requires seismic design, the seismic design of racks must follow ASCE 7 Section 15.5.3 — CBC § 2209.2 . The CBC defers to ASCE 7 for the seismic analysis and detailing provisions; the text of ASCE 7 is not reproduced in the retrieved CBC excerpts here.

Certification and special inspection

  • Certificate of compliance: For steel storage racks 8 ft (2438 mm) or greater in height to top load level and assigned to Seismic Design Category D, E, or F, submit a certificate of compliance to the owner (or owner's agent) at completion stating the work was performed in accordance with the approved construction documents — CBC § 2209.3 .
  • Special inspection: Steel storage racks (including cantilevered) that are 8 ft (2438 mm) or taller and in SD C, D, E or F require periodic special inspection per Table 1705.13.7; anchorage installation is specifically listed and referenced to ANSI/MH16.1 Section 7.3.2 — see CBC § 1705.13.7 and Table 1705.13.7 for required inspections .

Decision‑relevant thresholds and references (quick lookup)

Decision item Value / threshold Code Reference
Design & testing standard for upright racks ANSI MH16.1 § 2209.1
Design & testing standard for cantilevered racks ANSI MH16.3 § 2209.1
Seismic design requirement (what to follow) ASCE 7, Section 15.5.3 (where ASCE 7 requires seismic design) § 2209.2
Certificate of compliance required Racks ≥ 8 ft (2438 mm) to top load level in SD D, E or F § 2209.3
Special inspection (periodic) Racks ≥ 8 ft (2438 mm) in SD D, E or F (Table 1705.13.7) — includes anchorage § 1705.13.7 and Table 1705.13.7

Exceptions & special cases

  • The CBC text states "Where required by ASCE 7" for seismic design; whether ASCE 7 requires seismic design for a particular rack layout, building use or SDC depends on ASCE 7 provisions (ASCE 7 text is not included in the retrieved CBC excerpts). Do not assume every rack requires seismic design — consult ASCE 7 Section 15.5.3 and the project's ASCE 7 application to determine applicability (CBC § 2209.2) .
  • Racks under the 8 ft (2438 mm) threshold to the top load level are not captured by the § 2209.3 certification trigger; however other requirements (ANSI standards, local special inspections, or project-specific plans) may still apply. The CBC certification and periodic special inspection thresholds are explicit about the 8 ft measurement and SDCs D/E/F .
  • Industrial boltless shelving and some work platforms are covered by separate sections (e.g., § 2211) and by Chapter 15 of ASCE 7 for seismic design; do not conflate those systems with ANSI MH16.1 rack requirements without checking the specific section .

Common mistakes

  • Measuring to overall frame height instead of to the "top load level": CBC § 2209.3 triggers at 8 ft to the top load level; confirm the top load level elevation used for measurement .
  • Assuming certification/special inspection applies in all SDCs: the CBC certification and periodic special-inspection requirements specifically call out SDC D, E or F (and Table 1705.13.7 references periodic inspection) — verify the assigned SDC before enforcing the certification requirement .
  • Forgetting to follow ANSI/MH16.1 details for anchorage and connections: Table 1705.13.7 lists storage rack anchorage installation inspection and references ANSI/MH16.1 Section 7.3.2; anchors are often the point of failure in seismic events, so do not omit anchor inspection or documentation .
  • Treating special inspection as "continuous" by default: Table 1705.13.7 specifies periodic special inspection for the listed items; know whether the contract documents or local jurisdiction require continuous inspection instead .

Worked example — concrete scenario

Scenario: A warehouse installs selective pallet racks with top load level at 10 feet (3048 mm). The building is located in an area that assigns the structure Seismic Design Category D.

How the CBC applies:

  1. Design standard — the rack manufacturer/designer must follow ANSI MH16.1 for design and testing; if racks are cantilevered, ANSI MH16.3 applies (CBC § 2209.1) .
  2. Seismic design — because ASCE 7 requires seismic design for racks in the applicable conditions, the rack seismic design must comply with ASCE 7 Section 15.5.3 as adopted by CBC § 2209.2; you must use ASCE 7 procedures for seismic forces, attachment details, and any required modification factors (CBC § 2209.2) . (Note: ASCE 7 specifics are in ASCE 7 and are not printed in the CBC excerpts here.)
  3. Certificate of compliance — rack height to top load level = 10 ft > 8 ft, and the assigned SDC = D, so on completion submit a certificate of compliance to the owner stating the work was performed per approved construction documents (CBC § 2209.3) .
  4. Special inspection — because the rack is ≥ 8 ft and in SDC D, periodic special inspection is required per Table 1705.13.7; anchorage installation will be inspected per ANSI/MH16.1 Section 7.3.2 as listed in the table (CBC § 1705.13.7, Table 1705.13.7) .

Action items for the project team:

  • Engage a designer familiar with ANSI MH16.1 and ASCE 7 Section 15.5.3.
  • Specify anchor type, size and embedment per the design documents and include those details for inspection.
  • Arrange periodic special inspection (qualified special inspector) per Table 1705.13.7 and prepare to submit the certificate of compliance to the owner at rack completion (CBC § 2209.3) .

Related provisions

  • CBC § 2209.1 — General: ANSI MH16.1 / MH16.3 for racks and cantilevered racks .
  • CBC § 2209.2 — Seismic design: follow ASCE 7 Section 15.5.3 where ASCE 7 requires seismic design .
  • CBC § 2209.3 — Certification: certificate of compliance for racks ≥ 8 ft in SDC D/E/F .
  • CBC § 1705.13.7 and Table 1705.13.7 — Special inspections required for storage racks ≥ 8 ft in certain SDCs; anchorage inspection references ANSI/MH16.1 Section 7.3.2 .
  • CBC § 2211 — Industrial boltless steel shelving (separate standard ANSI/MH 28.2; seismic design per ASCE 7 Chapter 15) .
  • CBC § 2213 — Stairs, ladders and guarding for steel storage racks (ANSI/MH 32.1) .

Code references

Grounded in the retrieved California Building Code — click a citation to read the verbatim passage:

  • CBC § 3.1. High relevance — show source text

    3.1. Joist supports. 3.2. Joist girder supports. 3.3. Field splices. 3.4. Bridging attachments. 4. Deflection criteria for joists and joist girder configurations that differ from those defined by SJI 100 or SJI 200. 5. Size, location and connections for bridging.

    1. Joist headers.

    Steel joist placement plans do not require the seal and signature of the joist manufacturer’s registered design professional.

    [OSHPD 1R, 2 & 5] Not permitted by OSHPD.

    2207.5 Certification. At completion of manufacture, the steel joist manufacturer shall submit a certificate of compliance to the owner or the owner’s authorized agent for submittal to the building official as specified in Section 1704.5 stating that work was performed in accordance with approved construction documents and with SJI 100 or SJI 200, as applicable.

    2207.6 Joist chord bracing. [OSHPD 1R, 2 & 5] The chords of all joists shall be laterally supported at all points where the chords change direction.

    SECTION 2208—STEEL DECK

    2208.1 Steel decks. The design and construction of cold-formed steel floor and roof decks and composite slabs of concrete and steel deck shall be in accordance with SDI SD. The design of cold-formed steel diaphragms shall be in accordance with additional provisions of AISI S310, as applicable.

    [OSHPD 1R, 2 & 5] The base material thickness of the steel deck shall not be less than 0.0359 inch (0.9 mm) (20 gage).

    Exception: For single-story, nonbuilding structures similar to buildings, the minimum deck thickness need not apply if the steel roof deck is not being used as the diaphragm and there are no suspended hangers or bracing for nonstructural components attached to the deck.

    SECTION 2209—STEEL STORAGE RACKS

    2209.1 General. The design, testing and utilization of steel storage racks made of cold-formed or hot-rolled steel structural members shall be in accordance with ANSI MH16.1. The design, testing and utilization of steel cantilevered storage racks made of cold-formed or hot-rolled steel structural members shall be in accordance with ANSI MH 16.3.

    2209.2 Seismic design. Where required by ASCE 7, the seismic design of steel storage racks and cantilevered steel storage racks shall be in accordance with Section 15.5.3 of ASCE 7.

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    2209.3 Certification. For steel storage racks that are 8 feet (2438 mm) in height or greater to the top load level and assigned to Seismic Design Category D, E, or F at completion of the storage rack installation, a certificate of compliance shall be submitted to the owner or the owner’s authorized agent stating that the work was performed in accordance with approved construction documents.

    SECTION 2210—METAL BUILDING SYSTEMS

    2210.1 General. The design, fabrication and erection of a metal building system shall be in accordance with the provisions of this section.

  • CBC § 2209.1 High relevance — show source text

    Exception: For single-story, nonbuilding structures similar to buildings, the minimum deck thickness need not apply if the steel roof deck is not being used as the diaphragm and there are no suspended hangers or bracing for nonstructural components attached to the deck.

    SECTION 2209—STEEL STORAGE RACKS

    2209.1 General. The design, testing and utilization of steel storage racks made of cold-formed or hot-rolled steel structural members shall be in accordance with ANSI MH16.1. The design, testing and utilization of steel cantilevered storage racks made of cold-formed or hot-rolled steel structural members shall be in accordance with ANSI MH 16.3.

    2209.2 Seismic design. Where required by ASCE 7, the seismic design of steel storage racks and cantilevered steel storage racks shall be in accordance with Section 15.5.3 of ASCE 7.

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    2209.3 Certification. For steel storage racks that are 8 feet (2438 mm) in height or greater to the top load level and assigned to Seismic Design Category D, E, or F at completion of the storage rack installation, a certificate of compliance shall be submitted to the owner or the owner’s authorized agent stating that the work was performed in accordance with approved construction documents.

    SECTION 2210—METAL BUILDING SYSTEMS

    2210.1 General. The design, fabrication and erection of a metal building system shall be in accordance with the provisions of this section.

    2210.1.1 Design. The design of metal building systems shall be in accordance with Sections 2210.1.1.1 through 2210.1.1.4, as applicable.

    2210.1.1.1 Structural steel. The design, fabrication and erection of structural steel shall be in accordance with Section 2202.

    2210.1.1.2 Cold-formed steel. The design of cold-formed carbon and low-alloy steel structural members shall be in accordance with Section 2204.

    2210.1.1.3 Steel joists. The design of steel joists shall be in accordance with Section 2207.

    2210.1.1.4 Steel cable. The design, fabrication and erection of steel cables, including related connections, shall be in accordance with Section 2214.

    2210.2 Seismic design. Where required, the seismic design, fabrication and erection of the structural steel seismic force-resisting system shall be in accordance with Section 2202.2.1 or 2202.2.2, as applicable.

    SECTION 2211—INDUSTRIAL BOLTLESS STEEL SHELVING

    2211.1 General. The design, testing and utilization of industrial boltless steel shelving shall be in accordance with MHI ANSI/MH 28.2. Where required by ASCE 7, the seismic design of industrial boltless steel shelving shall be in accordance with Chapter 15 of ASCE 7.

    SECTION 2212—INDUSTRIAL STEEL WORK PLATFORMS

    2212.1 General. The design, testing and utilization of industrial steel work platforms shall be in accordance with MHI ANSI/MH 28.3. Where required by ASCE 7, the seismic design of industrial steel work platforms shall be in accordance with Chapter 15 of ASCE 7.

  • CBC § 1704.5 High relevance — show source text

    2207 A .5 Certification. At completion of manufacture, the steel joist manufacturer shall submit a certificate of compliance to the owner or the owner’s authorized agent for submittal to the building official as specified in Section 1704.5 stating that work was performed in accordance with approved construction documents and with SJI 100 or SJI 200, as applicable.

    2207A.6 Joist chord bracing. The chords of all joists shall be laterally supported at all points where the chords change direction.

    SECTION 2208 A —STEEL DECK

    2208 A .1 Steel decks. The design and construction of cold-formed steel floor and roof decks and composite slabs of concrete and steel deck shall be in accordance with SDI SD. The design of cold-formed steel diaphragms shall be in accordance with additional provisions of AISI S310, as applicable. The base material thickness of steel deck shall not be less than 0.0359 inch (0.9 mm) (20 gage).

    Exception: [DSA-SS] For single-story open structures, the minimum deck thickness may be waived if the steel roof deck need not be used as the diaphragm and there are no suspended hangers or bracing for nonstructural components attached to the deck.

    SECTION 2209 A —STEEL STORAGE RACKS

    2209 A .1 General. The design, testing and utilization of steel storage racks made of cold-formed or hot-rolled steel structural members shall be in accordance with ANSI MH16.1. The design, testing and utilization of steel cantilevered storage racks made of cold-formed or hot-rolled steel structural members shall be in accordance with ANSI MH 16.3.

    2209 A .2 Seismic design. Where required by ASCE 7, the seismic design of steel storage racks and cantilevered steel storage racks shall be in accordance with Section 15.5.3 of ASCE 7.

    2209 A .3 Certification. For steel storage racks that are 8 feet (2438 mm) in height or greater to the top load level and assigned to Seismic Design Category D, E, or F at completion of the storage rack installation, a certificate of compliance shall be submitted to the owner or the owner’s authorized agent stating that the work was performed in accordance with approved construction documents.

    SECTION 2210 A —METAL BUILDING SYSTEMS

    2210 A .1 General. The design, fabrication and erection of a metal building system shall be in accordance with the provisions of this section.

    2210 A .1.1 Design. The design of metal building systems shall be in accordance with Sections 2210 A .1.1.1 through 2210 A .1.1.4, as applicable.

    2210 A .1.1.1 Structural steel. The design, fabrication and erection of structural steel shall be in accordance with Section 2202 A .

    2210 A .1.1.2 Cold-formed steel. The design of cold-formed carbon and low-alloy steel structural members shall be in accordance with Section 2204 A .

  • CBC § 15.5.3 High relevance — show source text

    2209 A .2 Seismic design. Where required by ASCE 7, the seismic design of steel storage racks and cantilevered steel storage racks shall be in accordance with Section 15.5.3 of ASCE 7.

    2209 A .3 Certification. For steel storage racks that are 8 feet (2438 mm) in height or greater to the top load level and assigned to Seismic Design Category D, E, or F at completion of the storage rack installation, a certificate of compliance shall be submitted to the owner or the owner’s authorized agent stating that the work was performed in accordance with approved construction documents.

    SECTION 2210 A —METAL BUILDING SYSTEMS

    2210 A .1 General. The design, fabrication and erection of a metal building system shall be in accordance with the provisions of this section.

    2210 A .1.1 Design. The design of metal building systems shall be in accordance with Sections 2210 A .1.1.1 through 2210 A .1.1.4, as applicable.

    2210 A .1.1.1 Structural steel. The design, fabrication and erection of structural steel shall be in accordance with Section 2202 A .

    2210 A .1.1.2 Cold-formed steel. The design of cold-formed carbon and low-alloy steel structural members shall be in accordance with Section 2204 A .

    2210 A .1.1.3 Steel joists. The design of steel joists shall be in accordance with Section 2207 A .

    2210 A .1.1.4 Steel cable. The design, fabrication and erection of steel cables, including related connections, shall be in accordance with Section 2214 A .

    2210 A .2 Seismic design. Where required, the seismic design, fabrication and erection of the structural steel seismic force-resisting system shall be in accordance with Section 2202 A .2.1 or 2202 A .2.2, as applicable.

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    SECTION 2211 A —INDUSTRIAL BOLTLESS STEEL SHELVING

    2211 A .1 General. The design, testing and utilization of industrial boltless steel shelving shall be in accordance with MHI ANSI/MH 28.2. Where required by ASCE 7, the seismic design of industrial boltless steel shelving shall be in accordance with Chapter 15 of ASCE 7.

    SECTION 2212 A —INDUSTRIAL STEEL WORK PLATFORMS

    2212 A .1 General. The design, testing and utilization of industrial steel work platforms shall be in accordance with MHI ANSI/MH 28.3. Where required by ASCE 7, the seismic design of industrial steel work platforms shall be in accordance with Chapter 15 of ASCE 7.

  • CBC § 1705.13.7 High relevance — show source text
    TABLE 1705.13.7—REQUIRED INSPECTIONS OF STORAGE RACK SYSTEMS Col2 Col3 Col4 Col5
    TYPE CONTINUOUS
    INSPECTION    		 PERIODIC
    INSPECTION    		 REFERENCED
    STANDARD    		 IBC REFERENCE
    1. Materials used, to verify compliance with one or more of the
    material test reports in accordance with the approved
    construction documents.    		 — X — —
    2. Fabricated storage rack elements. — X — Section 1704.2.5
    3. Storage rack anchorage installation. — X ANSI/MH16.1
    Section 7.3.2    		 —
    4. Completed storage rack system, to indicate compliance with
    the approved construction documents.    		 — X — —

    1705.13.8 Seismic isolation systems. Periodic special inspection shall be provided for seismic isolation systems in seismically isolated structures assigned to Seismic Design Category B, C, D, E or F during the fabrication and installation of isolator units and energy dissipation devices.

    1705.13.9 Cold-formed steel special bolted moment frames. Periodic special inspection shall be provided for the installation of cold-formed steel special bolted moment frames in the seismic force-resisting systems of structures assigned to Seismic Design Category D, E or F.

    1705.14 Testing for seismic resistance. Testing for seismic resistance shall be required as specified in Sections 1705.14.1 through 1705.14.4, unless exempted from special inspections by the exceptions of Section 1704.2.

    1705.14.1 Structural steel. Nondestructive testing for seismic resistance shall be in accordance with Section 1705.14.1.1 or 1705.14.1.2, as applicable.

    1705.14.1.1 Seismic force-resisting systems. Nondestructive testing of structural steel in the seismic force-resisting systems in buildings and structures assigned to Seismic Design Category B, C, D, E or F shall be performed in accordance with the quality assurance requirements of AISC 341. [OSHPD 1R, 2 & 5] and this code.

    Exceptions: [OSHPD 1R, 2 & 5] Not permitted by OSHPD.

    1. In buildings and structures assigned to Seismic Design Category B or C, nondestructive testing is not required for structural steel seismic force-resisting systems where the response modification coefficient, R, designated for “Steel systems not specifically detailed for seismic resistance, excluding cantilever column systems” in ASCE 7, Table 12.2-1, has been used for design and detailing.
    2. In structures assigned to Seismic Design Category D, E, or F, nondestructive testing is not required for structural steel seismic force-resisting systems where design and detailing in accordance with AISC 360 is permitted by ASCE 7, Table 15.4-1.
  • CBC § 6.4 High relevance — show source text
    1. Installation and anchorage of ductwork designed to carry hazardous materials in structures assigned to Seismic Design Category C, D, E or F.
    2. Installation and anchorage of vibration isolation systems in structures assigned to Seismic Design Category C, D, E or F where the approved construction documents require a nominal clearance of [1] / 4 inch (6.4 mm) or less between the equipment support frame and restraint.

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    SPECIAL INSPECTIONS AND TESTS

    1. Installation of mechanical and electrical equipment, including duct work, piping systems and their structural supports, where automatic sprinkler systems are installed in structures assigned to Seismic Design Category C, D, E or F to verify one of the following: 6.1. Minimum clearances have been provided as required by Section 13.2.4 ASCE/SEI 7. 6.2. A nominal clearance of not less than 3 inches (76 mm) has been be provided between automatic sprinkler system drops and sprigs and: structural members not used collectively or independently to support the sprinklers; equipment attached to the building structure; and other systems’ piping.

    Where flexible sprinkler hose fittings are used, special inspection of minimum clearances is not required.

    1705.13.7 Storage racks. Steel storage racks and steel cantilevered storage racks that are 8 feet (2438 mm) in height or greater and assigned to Seismic Design Category D, E or F shall be provided with periodic special inspection as required by Table 1705.13.7.

    TABLE 1705.13.7—REQUIRED INSPECTIONS OF STORAGE RACK SYSTEMS Col2 Col3 Col4 Col5
    TYPE CONTINUOUS
    INSPECTION    		 PERIODIC
    INSPECTION    		 REFERENCED
    STANDARD    		 IBC REFERENCE
    1. Materials used, to verify compliance with one or more of the
    material test reports in accordance with the approved
    construction documents.    		 — X — —
    2. Fabricated storage rack elements. — X — Section 1704.2.5
    3. Storage rack anchorage installation. — X ANSI/MH16.1
    Section 7.3.2    		 —
    4. Completed storage rack system, to indicate compliance with
    the approved construction documents.    		 — X — —

    1705.13.8 Seismic isolation systems. Periodic special inspection shall be provided for seismic isolation systems in seismically isolated structures assigned to Seismic Design Category B, C, D, E or F during the fabrication and installation of isolator units and energy dissipation devices.

    1705.13.9 Cold-formed steel special bolted moment frames. Periodic special inspection shall be provided for the installation of cold-formed steel special bolted moment frames in the seismic force-resisting systems of structures assigned to Seismic Design Category D, E or F.

    1705.14 Testing for seismic resistance. Testing for seismic resistance shall be required as specified in Sections 1705.14.1 through 1705.14.4, unless exempted from special inspections by the exceptions of Section 1704.2.

  • CBC § 2210.1.1.1 High relevance — show source text

    2210.1.1.1 Structural steel. The design, fabrication and erection of structural steel shall be in accordance with Section 2202.

    2210.1.1.2 Cold-formed steel. The design of cold-formed carbon and low-alloy steel structural members shall be in accordance with Section 2204.

    2210.1.1.3 Steel joists. The design of steel joists shall be in accordance with Section 2207.

    2210.1.1.4 Steel cable. The design, fabrication and erection of steel cables, including related connections, shall be in accordance with Section 2214.

    2210.2 Seismic design. Where required, the seismic design, fabrication and erection of the structural steel seismic force-resisting system shall be in accordance with Section 2202.2.1 or 2202.2.2, as applicable.

    SECTION 2211—INDUSTRIAL BOLTLESS STEEL SHELVING

    2211.1 General. The design, testing and utilization of industrial boltless steel shelving shall be in accordance with MHI ANSI/MH 28.2. Where required by ASCE 7, the seismic design of industrial boltless steel shelving shall be in accordance with Chapter 15 of ASCE 7.

    SECTION 2212—INDUSTRIAL STEEL WORK PLATFORMS

    2212.1 General. The design, testing and utilization of industrial steel work platforms shall be in accordance with MHI ANSI/MH 28.3. Where required by ASCE 7, the seismic design of industrial steel work platforms shall be in accordance with Chapter 15 of ASCE 7.

    SECTION 2213—STAIRS, LADDERS AND GUARDING FOR STEEL STORAGE RACKS AND INDUSTRIAL STEEL WORK PLATFORMS

    2213.1 General. The design and installation of stairs, ladders and guarding serving steel storage racks and industrial steel work platforms shall be in accordance with MHI ANSI/MH 32.1.

    SECTION 2214—STEEL CABLE STRUCTURES

    2214.1 General. The design, fabrication and erection including related connections, and protective coatings of steel cables for buildings shall be in accordance with ASCE 19.

    [OSHPD 1R, 2 & 5] Steel cables with glass or polymer fabric material acting as a tensile membrane structure shall be considered as an alternative system.

    SECTION 2215 — ADDITIONAL REQUIREMENTS FOR COMMUNITY COLLEGES [DSA-SS/CC]

    2215.1 General.

    2215.1.1 Shear transfer at column base plate. Where the holes in column base plates are more than [1] / 8 inch (3 mm) larger than the anchor rods, as permitted by AISC 360, the anchor rods shall be designed for the induced bending stresses in combination with axial and shear stresses. Alternatively, shear lugs designed in accordance with ACI 318 Section 17.11 shall be permitted to transfer shear forces between column base plates and the supporting structure.

    2215.2 Modifications to AISC 341.

    2215.2.1 Section B5. Modify exception of Section B5.2(a) as follows:

  • CBC § 1.1.4 High relevance — show source text

    2210 A .1.1.4 Steel cable. The design, fabrication and erection of steel cables, including related connections, shall be in accordance with Section 2214 A .

    2210 A .2 Seismic design. Where required, the seismic design, fabrication and erection of the structural steel seismic force-resisting system shall be in accordance with Section 2202 A .2.1 or 2202 A .2.2, as applicable.

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    SECTION 2211 A —INDUSTRIAL BOLTLESS STEEL SHELVING

    2211 A .1 General. The design, testing and utilization of industrial boltless steel shelving shall be in accordance with MHI ANSI/MH 28.2. Where required by ASCE 7, the seismic design of industrial boltless steel shelving shall be in accordance with Chapter 15 of ASCE 7.

    SECTION 2212 A —INDUSTRIAL STEEL WORK PLATFORMS

    2212 A .1 General. The design, testing and utilization of industrial steel work platforms shall be in accordance with MHI ANSI/MH 28.3. Where required by ASCE 7, the seismic design of industrial steel work platforms shall be in accordance with Chapter 15 of ASCE 7.

    SECTION 2213 A —STAIRS, LADDERS AND GUARDING FOR STEEL STORAGE RACKS AND INDUSTRIAL STEEL WORK PLATFORMS

    2213 A .1 General. The design and installation of stairs, ladders and guarding serving steel storage racks and industrial steel work platforms shall be in accordance with MHI ANSI/MH 32.1.

    SECTION 2214 A —STEEL CABLE STRUCTURES

    2214 A .1 General. The design, fabrication and erection including related connections, and protective coatings of steel cables for buildings shall be in accordance with ASCE 19. Steel cables with glass or polymer fabric material acting as a tensile membrane struc- ture is an alternative system.

    SECTION 2215A—[DSA-SS] LIGHT MODULAR STEEL MOMENT FRAMES FOR PUBLIC ELEMENTARY AND SECONDARY SCHOOLS, AND COMMUNITY COLLEGES

    2215A.1 General.

    2215A.1.1 Configuration. Light modular steel moment frame buildings shall be constructed of factory-assembled modules comprising a single-story moment-resisting space frame supporting a floor and roof. Individual modules shall not exceed a width of 14 feet (4.25 m) nor a length of 72 feet (22 m). All connections of beams to corner columns shall be designed as moment-resisting in accordance with the criteria of Section 2215A.2. Modules may be stacked to form multistory structures not exceeding 35 feet or two stories in height. When stacked modules are evaluated separately, seismic forces on each module shall be distributed in accordance with Section 12.8.3 of ASCE 7, considering the modules in the stacked condition. See Section 2215A.2.5 of this code.

  • CBC § 1705.13.4 High relevance — show source text

    1705.13.4 Designated seismic systems. For structures assigned to Seismic Design Category C, D, E or F, the special inspector shall examine designated seismic systems requiring seismic qualification in accordance with Section 13.2.3 of ASCE 7 and verify that the label, anchorage and mounting conform to the certificate of compliance.

    1705.13.5 Architectural components. Periodic special inspection is required for the erection and fastening of exterior cladding, interior and exterior nonbearing walls and interior and exterior veneer in structures assigned to Seismic Design Category D, E or F.

    Exception: Periodic special inspection is not required for the following:

    1. Exterior cladding, interior and exterior nonbearing walls and interior and exterior veneer 30 feet (9144 mm) or less in height above grade or walking surface.
    2. Exterior cladding and interior and exterior veneer weighing 5 psf (0.24 kN/m [2] ) or less.
    3. Interior nonbearing walls weighing 15 psf (0.72 kN/m [2] ) or less.

    1705.13.5.1 Access floors. Periodic special inspection is required for the anchorage of access floors in structures assigned to Seismic Design Category D, E or F.

    1705.13.6 Plumbing, mechanical and electrical components. Periodic special inspection of plumbing, mechanical and electrical components shall be required for the following:

    1. Anchorage of electrical equipment for emergency and standby power systems in structures assigned to Seismic Design Category C, D, E or F.
    2. Anchorage of other electrical equipment in structures assigned to Seismic Design Category E or F.
    3. Installation and anchorage of piping systems designed to carry hazardous materials and their associated mechanical units in structures assigned to Seismic Design Category C, D, E or F.
    4. Installation and anchorage of ductwork designed to carry hazardous materials in structures assigned to Seismic Design Category C, D, E or F.
    5. Installation and anchorage of vibration isolation systems in structures assigned to Seismic Design Category C, D, E or F where the approved construction documents require a nominal clearance of [1] / 4 inch (6.4 mm) or less between the equipment support frame and restraint.

    2025 CALIFORNIA BUILDING CODE 17-15

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    SPECIAL INSPECTIONS AND TESTS

    1. Installation of mechanical and electrical equipment, including duct work, piping systems and their structural supports, where automatic sprinkler systems are installed in structures assigned to Seismic Design Category C, D, E or F to verify one of the following: 6.1. Minimum clearances have been provided as required by Section 13.2.4 ASCE/SEI 7. 6.2. A nominal clearance of not less than 3 inches (76 mm) has been be provided between automatic sprinkler system drops and sprigs and: structural members not used collectively or independently to support the sprinklers; equipment attached to the building structure; and other systems’ piping.

    Where flexible sprinkler hose fittings are used, special inspection of minimum clearances is not required.

    1705.13.7 Storage racks. Steel storage racks and steel cantilevered storage racks that are 8 feet (2438 mm) in height or greater and assigned to Seismic Design Category D, E or F shall be provided with periodic special inspection as required by Table 1705.13.7.

  • CBC § 6.4 High relevance — show source text

    Anchorage of electrical equipment for emergency and standby power systems in structures assigned to Seismic Design Category D, E or F. 2. Anchorage of other electrical equipment in structures assigned to Seismic Design Category D, E or F. 3. Installation and anchorage of piping systems designed to carry hazardous materials and their associated mechanical units in structures assigned to Seismic Design Category D, E or F. 4. Installation and anchorage of ductwork designed to carry hazardous materials in structures assigned to Seismic Design Category D, E or F. 5. Installation and anchorage of vibration isolation systems in structures assigned to Seismic Design Category D, E or F where the approved construction documents require a nominal clearance of [1] / 4 inch (6.4 mm) or less between the equipment support frame and restraint. 6. Installation of mechanical and electrical equipment, including duct work, piping systems and their structural supports, where automatic sprinkler systems are installed in structures assigned to Seismic Design Category D, E or F to verify one of the following: 6.1. Minimum clearances have been provided as required by Section 13.2.4 ASCE/SEI 7. 6.2. A nominal clearance of not less than 3 inches (76 mm) has been be provided between automatic sprinkler system drops and sprigs and: structural members not used collectively or independently to support the sprinklers; equipment attached to the building structure; and other systems’ piping.

    Where flexible sprinkler hose fittings are used, special inspection of minimum clearances is not required.

    2025 CALIFORNIA BUILDING CODE 17A-17

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    SPECIAL INSPECTIONS AND TESTS

    1705 A .13.7 Storage racks. Steel storage racks and steel cantilevered storage racks that are 8 feet (2438 mm) in height or greater and assigned to Seismic Design Category D, E or F shall be provided with periodic special inspection as required by Table 1705 A .13.7.

    TABLE 1705A.13.7—REQUIRED INSPECTIONS OF STORAGE RACK SYSTEMS Col2 Col3 Col4 Col5
    TYPE CONTINUOUS
    INSPECTION    		 PERIODIC
    INSPECTION    		 REFERENCED
    STANDARD    		 IBC REFERENCE
    1. Materials used, to verify compliance with one or more of the
    material test reports in accordance with the approved
    construction documents.    		 — X — —
    2. Fabricated storage rack elements. — X — Section 1704_A_.2.5
    3. Storage rack anchorage installation. — X ANSI/MH16.1
    Section 7.3.2    		 —
    4. Completed storage rack system, to indicate compliance with
    the approved construction documents.    		 — X — —

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    1705 A .13.8 Seismic isolation and damping systems. Periodic special inspection shall be provided for seismic isolation and damping systems in structures assigned to Seismic Design Category D, E or F during the fabrication and installation of isolator units and energy dissipation devices. Continuous special inspection is required for prototype and production testing of isolator units and damping devices.

  • CBC § 2202.2 Medium relevance — show source text

    Seismic provisions 2202.2, 2204.2, 2206.1.1, 2207.1.1, 2209.2, 2210.2 Special inspections 1705.3 Stainless Steel 1705.2.2, 2203, 2205 Stairs, ladders and guarding for steel storage racks and industrial steel work platforms 2213 Storage racks 2209, 2213 Structural steel 2202

    Stone Masonry 2103.1, 2113.11.2.1 Stone Veneer 1404.8 Slab-type 1404.9 Stop Work Orders 115 Storage Occupancy (Group S) 311 Accessibility Chapter 11B Accessory 311.1.1 Area 406.5.4, 406.5.5, 406.6.1, 503, 505, 506, 507, 508 Equipment platforms 505.2 Group provisions Hazard storage, low, Group S-2 311.3 Hazard storage, moderate, Group S-1 311.2 Hazardous material display and storage 414.2.5 Height 406.5.4, 406.6.1, 503, 504, 505, 508, 510 Incidental uses 509

    Interior finishes Table 803.13, 804 Live loads Table 1607.1 Means of egress Aisles 1018.5

    Stairway, exit access 1019 Travel distance 1006.3, 1017.2, 1017.2.2, 1006.2.1 Mixed occupancies 508.3, 508.4 Accessory 311.1.1, 508.2 Parking above/below 510.3, 510.4, 510.7, 510.8, 510.9 Special mixed 510.2

    Occupancy exception 311.1.1 Plumbing fixtures Chapter 29 Self-service storage 311.2 Special provisions Aircraft related occupancies 412 High-piled combustible 413 Parking garages 406, 510 Sprinkler protection 903.2.10 Unlimited area 507.3, 507.4, 507.5 Storage Racks, Steel 2209 Storm Shelter 423

    Education 423.5 Emergency operation facilities 423.4 Refuge area (see Refuge Area) Risk category 1604.5.1 Strength Design requirements 1604.2 Strength Design 1604.1 Factored load 202

    Limit state 202

    Load combinations 1605

    Load factor 202

    Masonry 2108 Structural Composite Lumber 2303.1.10, Table 2304.11 Structural Design Chapter 16, 107.2.7, Chapter 16A Aluminum Chapter 20 Concrete Chapters 19 and 19A Foundations Chapters 18 and 18A Masonry Chapters 21 and 21A Steel Chapters 22 and 22A Wood Chapter 23 Structural Glued-Laminated

    Timber 2303.1, Table 2306.1 Structural Observation 1704.6

    Stucco 2512

  • CBC § 12.2 Medium relevance — show source text

    Exceptions: [OSHPD 1R, 2 & 5] Not permitted by OSHPD.

    1. In buildings and structures assigned to Seismic Design Category B or C, special inspections are not required for structural steel seismic force-resisting systems where the response modification coefficient, R, designated for “Steel systems not specifically detailed for seismic resistance, excluding cantilever column systems” in ASCE 7, Table 12.2-1, has been used for design and detailing.

    17-14 2025 CALIFORNIA BUILDING CODE

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    SPECIAL INSPECTIONS AND TESTS

    1. In structures assigned to Seismic Design Category D, E, or F, special inspections are not required for structural steel seismic force-resisting systems where design and detailing in accordance with AISC 360 is permitted by ASCE 7, Table 15.4-1.

    1705.13.1.2 Structural steel elements. Special inspections of structural steel elements in the seismic force-resisting systems of buildings and structures assigned to Seismic Design Category B, C, D, E or F other than those covered in Section 1705.13.1.1, including struts, collectors, chords and foundation elements, shall be performed in accordance with the quality assurance requirements of AISC 341. [OSHPD 1R, 2 & 5] and this code.

    Exceptions: [OSHPD 1R, 2 & 5] Not permitted by OSHPD.

    1. In buildings and structures assigned to Seismic Design Category B or C, special inspections of structural steel elements are not required for seismic force-resisting systems with a response modification coefficient, R, of 3 or less.
    2. In structures assigned to Seismic Design Category D, E, or F, special inspections of structural steel elements are not required for seismic force-resisting systems where design and detailing other than AISC 341 is permitted by ASCE 7, Table 15.4-1. Special inspection shall be in accordance with the applicable referenced standard listed in ASCE 7, Table 15.4-1.

    1705.13.2 Structural wood. For the seismic force-resisting systems of structures assigned to Seismic Design Category C, D, E or F:

    1. Continuous special inspection shall be required during field gluing operations of elements of the seismic force-resisting system.
    2. Periodic special inspection shall be required for nailing, bolting, anchoring and other fastening of elements of the seismic force-resisting system, including wood shear walls, wood diaphragms, drag struts, braces, shear panels and hold-downs.

    Exception: Special inspections are not required for wood shear walls, shear panels and diaphragms, including nailing, bolting, anchoring and other fastening to other elements of the seismic force-resisting system, where the lateral resistance is provided by structural sheathing, and the specified fastener spacing at the panel edges is more than 4 inches (102 mm) on center.

    1705.13.3 Cold-formed steel light-frame construction. For the seismic force-resisting systems of structures assigned to Seismic Design Category C, D, E or F, periodic special inspection shall be required for both:

    1. Welding operations of elements of the seismic force-resisting system.
    2. Screw attachment, bolting, anchoring and other fastening of elements of the seismic force-resisting system, including shear walls, braces, diaphragms, collectors (drag struts) and hold-downs.

Frequently asked questions

Who must provide the certificate of compliance for a rack subject to § 2209.3?

Typically the party responsible for installation or the manufacturer (as specified in the approved construction documents) must provide the certificate of compliance to the owner or owner’s agent; the CBC text requires submission of the certificate at completion for the identified racks (CBC § 2209.3) .

Does every rack in a building need a seismic design per ASCE 7?

No — the CBC requires seismic design where ASCE 7 requires it (CBC § 2209.2). Whether ASCE 7 applies depends on ASCE 7 criteria for the particular rack, building occupancy, and SDC; the CBC defers to ASCE 7 Section 15.5.3 for that determination .

When is special inspection required for storage racks?

Periodic special inspection is required for steel storage racks (including cantilevered) that are 8 ft (2438 mm) or greater in height and assigned to certain Seismic Design Categories; see Table 1705.13.7 and § 1705.13.7 for the list of required inspections and referenced standards (CBC § 1705.13.7) .

If my rack is 7'‑6" tall, do I need the certificate and special inspection called out in § 2209.3 and Table 1705.13.7?

Not under those specific 8‑ft thresholds — § 2209.3 and Table 1705.13.7 use 8 ft (2438 mm) to top load level as the triggering height. However, other local requirements, the project’s approved construction documents, or ANSI/ASCE requirements may still impose inspections or design controls, so confirm with the project structural engineer and building official .

Where can I find the seismic design procedures mentioned in § 2209.2?

CBC points you to ASCE 7, Section 15.5.3. The ASCE 7 standard contains the procedural and analytical criteria; the CBC text references that section rather than reproducing it. Consult the current ASCE 7 edition adopted by your project for the full seismic design requirements (CBC § 2209.2) .

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