CBC · California Building Code

How are nonstructural components and designated seismic systems certified?

If your project is in the CBC seismic categories that trigger nonstructural or designated-system certification, the design professional must say on the plans how seismic qualification will be proven (analysis, testing or experience data) and the owner must submit certificates of compliance to the building official; special equipment (generators, life‑support systems, switchgear, etc.) often requires stricter testing and shake‑table sampling as noted in the CBC and California amendments (§1705.14; §1704.5) .

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Last reviewed: July 5, 2026

What the code requires — 2-4 sentences

The California Building Code requires that where ASCE 7 seismic provisions rely on seismic qualification or certification, the registered design professional must show on the approved construction documents the required method (analysis, testing or experience data) and the owner must submit certificates of compliance to the building official. Nonstructural components in Seismic Design Categories B–F and designated seismic systems in Categories C–F are specifically covered; the submittal rules for those certificates are in §1704.5. See §1705.14.2 and §1705.14.3 for the substantive requirements and §1704.5 for submittal of certificates of compliance .

Requirements in detail

Scope and triggers

Nonstructural components (mechanical, electrical, architectural items, supports and attachments) in structures assigned to Seismic Design Categories B, C, D, E or F are subject to seismic qualification when ASCE 7 requires it; the registered design professional must specify whether qualification is by analysis, testing or experience data (§1705.14.2) .
Designated seismic systems (the systems listed in ASCE 7 that require certification) in structures assigned to Seismic Design Categories C, D, E or F require similar specification by the registered design professional and certificates of compliance (§1705.14.3) .

Who specifies what

The registered design professional of record (RDP) must: identify which components/systems require seismic qualification or special seismic certification on the approved construction documents and state the acceptable means (analysis, testing or experience data) to demonstrate compliance (§1705.14.2, §1705.14.3) .

Submittals — certificates and timing

Certificates of compliance documenting that the seismic qualification/certification requirements have been met must be submitted to the building official as specified in §1704.5. The list of report/certificate types required by §1704.5 explicitly includes certificates for seismic qualification of nonstructural components and for designated seismic systems (§1704.5 items 2 and 3) .

Deemed-to-comply / preapproved tests and standards

The Code includes “deemed to satisfy” options for some nonstructural sway-bracing components (for example, components meeting ANSI/FM 1950 or ANSI/ASHRAE 171) — where those standards are met the component may be treated as satisfying the CBC requirement, subject to building official approval (§1705.14.2) .
For certain “special seismic certification” items (listed in the Code appendices and amendments), the California text (1705A) requires active/energized equipment to be certified by approved shake‑table testing in accordance with ICC‑ES AC156 or an equivalent protocol, with minimum test sampling rules for product lines (see §1705A.14.3) .

Table — Decision-relevant dimensions and where to find them

Decision dimension	Typical values / actions	Code Reference
Applicable SDC for nonstructural component certification	B, C, D, E or F	§1705.14.2
Applicable SDC for designated seismic systems	C, D, E or F	§1705.14.3
Who must specify qualification method	Registered design professional on approved construction documents	§1705.14.2, §1705.14.3
Acceptable demonstration methods	Analysis, testing, or experience data (or preapproved standards)	§1705.14.2, §1705.14.3
Required submittal	Certificates of compliance for seismic qualification/certification	§1704.5 (items 2–3)
Deemed-to-comply standards (examples)	ANSI/FM 1950, ANSI/ASHRAE 171, or building-official-approved tests	§1705.14.2
Special seismic certification for active/energized equipment	Shake-table testing per ICC‑ES AC156 or equivalent (per 1705A guidance)	§1705A.14.3

Exceptions & special cases

Deemed-to-comply provisions: Certain sway-bracing components that meet listed consensus standards (e.g., ANSI/FM 1950, ANSI/ASHRAE 171) are treated as satisfying §1705.14.2 when the standard or an approved alternative test protocol is used; however these are options — not mandates — and building official approval still applies .
More stringent “special seismic certification”: The Code’s California amendments (1705A) and cross-references identify particular equipment and life-safety items (generators, UPS, switchgear, fire‑protection systems, life‑support equipment, etc.) that require special seismic certification and may impose stricter testing/sampling (e.g., shake‑table testing) rules for active/energized components (§1705A.14.3 and §1705A.14.3.1) .
Seismic isolation systems are governed by separate test requirements — seismic isolation systems must be tested in accordance with ASCE 7 Section 17.8 (referenced in §1705.14.4) .
Local enforcement: The building official may approve equivalent testing protocols or accept alternative compliance paths (Section 104.2.3 noted in the CBC text) — always coordinate with the enforcing agency for preapproval of alternative test protocols or sampling strategies .

Common mistakes

Assuming all nonstructural items need certificates regardless of SDC: only items triggered by ASCE 7 provisions and the SDCs listed in §1705.14 apply (nonstructural certification is required for SDC B–F per §1705.14.2; designated systems for C–F per §1705.14.3) .
Omitting the RDP’s specification: the CBC requires the registered design professional to specify on the approved construction documents the method and acceptance criteria for seismic qualification — leaving that unspecified is a common permit-stage deficiency (§1705.14.2, §1705.14.3) .
Submitting test reports but not a formal certificate of compliance: §1704.5 requires certificates of compliance for seismic qualification and designated seismic systems; test reports alone may not substitute for the required certificate format or contents unless the building official accepts them (§1704.5 items 2–3) .
Relying on manufacturer marketing without documented test/analysis/experience data: “manufacturer’s certification” is acceptable only where ASCE 7 and the CBC allow it and the RDP has specified the acceptable basis on the construction documents (§1705.14.2) .
Failing to verify that “deemed-to-comply” standards used are accepted by the building official: standards like ANSI/FM 1950 may be acceptable, but the enforcing agency must accept the protocol or the manufacturer’s certification as satisfying the CBC (§1705.14.2) .

Worked example — concrete scenario with numbers

Scenario: A hospital (Risk Category/occupancy with life‑safety importance) in Seismic Design Category D is installing an emergency generator and associated switchgear (items identified in the Code’s special seismic certification lists).

Applicability: Because the building is SDC D and the equipment is a life-safety/alternate power system, the project is subject to §1705.14.3 special seismic certification requirements; the RDP must specify the required certification method on the approved construction documents (§1705.14.3 and §1705A.14.3.1) .
Testing requirement: Per the California guidance for special seismic certification, active/energized equipment (generators, UPS, switchgear) must be certified on the basis of approved shake‑table testing (ICC‑ES AC156 or equivalent) unless the building official approves an alternative (§1705A.14.3) .
Sample size: For a product line with similar structural configuration, at least two units must be shake‑table tested (the largest and a small unit) unless only a single product exists and the manufacturer’s process is ISO 9001 certified, in which case one test may be permitted (§1705A.14.3) .
Submittal: The owner (or owner’s agent) must deliver a certificate of compliance for the designated seismic system to the building official as required by §1704.5 (item 3) — include the test report reference, date, product model numbers, and confirmation that the tested configuration represents the installed equipment (§1704.5) .
Practical numbers: if the generator set weighs 2,500 lb and the installed product line includes models of 2,500 lb and 1,200 lb, the RDP should require testing of the 2,500‑lb (largest) and a 1,200‑lb (small) unit per the sampling rule; both certificates of compliance would be submitted with the permit closeout package (§1705A.14.3, §1704.5) .

Related provisions

§1705.14.2 — Seismic certification of nonstructural components
§1705.14.3 — Designated seismic systems (certification)
§1705.14.4 — Seismic isolation systems (testing requirements)
§1704.5 — Certificates of compliance (submittals required to the building official)
§1705A.14.3 — California amendment / special seismic certification (shake‑table testing, sampling)

Code references

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

CBC § 1705.14.2 High relevance — show source text
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1705.14.2 Nonstructural components. For structures assigned to Seismic Design Category B, C, D, E or F, where the requirements of Section 13.2.1 of ASCE 7 for nonstructural components, supports or attachments are met by seismic qualification as specified in Item 2 therein, the registered design professional shall specify on the approved construction documents the requirements for seismic qualification by analysis, testing or experience data. Certificates of compliance for the seismic qualification shall be submitted to the building official as specified in Section 1704.5.

[OSHPD 1R, 2 & 5] Seismic sway bracing components satisfying requirements of ANSI/FM 1950, ANSI/ASHRAE 171, or using an alter- native testing protocol approved by the building official shall be deemed to satisfy the requirements of this section.

Note: Deemed to comply provisions provide acceptable options to comply with the code but do not mandate their use. Alternative systems in accordance with Section 104.2.3 and the California Administrative Code Section 7-104 are always acceptable when approved by the building official.

1705.14.3 Designated seismic systems. For structures assigned to Seismic Design Category C, D, E or F and with designated seismic systems that are subject to the requirements of Section 13.2.4 of ASCE 7 for certification, the registered design professional shall specify on the approved construction documents the requirements to be met by analysis, testing or experience data as specified therein. Certificates of compliance documenting that the requirements are met shall be submitted to the building official as specified in Section 1704.5.

1705.14.3.1 Special seismic certification. [OSHPD 1R, 2 & 5] Special seismic certification shall be required in accordance with Section 1705A.14.3. for all of the following: 1. Life-safety components, such as emergency and standby power systems, mechanical smoke removal systems and fire sprinkler/fire protection systems. 2. Medical, mechanical and electrical equipment and components required for life support for patients. 3. On-site power resources (PVs, batteries, fuel cells, etc.) provided to replace, in whole or in part, the public or private elec- tric utility service. 4. [OSHPD 2] Alternate power systems including:

a. Generators.

b. UPS and batteries.

c. Renewable electrical generation and control equipment. d. Panelboards as defined in the California Electrical Code (CEC) Article 100.

e. Manual and automatic transfer switches.

f. Switchgear and switchboards.

1705.14.4 Seismic isolation systems. Seismic isolation systems in seismically isolated structures assigned to Seismic Design Category B, C, D, E or F shall be tested in accordance with Section 17.8 of ASCE 7.

[BF] 1705.15 Sprayed fire-resistive materials (SFRM). Special inspections and tests of sprayed fire-resistive materials (SFRM) applied to floor, roof and wall assemblies and structural members shall be performed in accordance with Sections 1705.15.1 through 1705.15.6. Special inspections shall be based on the fire-resistance design as designated in the approved construction documents.
CBC § 14.2 High relevance — show source text
1705 A .14.2 Nonstructural components. For structures assigned to Seismic Design Category D, E or F, where the requirements of Section 13.2.1 of ASCE 7 for nonstructural components, supports or attachments are met by manufacturer’s certification as specified in Item 2 therein, the registered design professional shall specify on the approved construction documents the requirements for seismic certification by analysis or testing.

Seismic sway bracing components satisfying requirements of ANSI/FM 1950, ANSI/ASHRAE 171, or using an alternative testing protocol approved by the building official shall be deemed to satisfy the requirements of this section.

[OSHPD 1 & 4] Note: Deemed to comply provisions provide acceptable options to comply with the code but do not mandate their use. Alternative systems in accordance with Section 104.2.3 and the California Administrative Code Section 7-104 are always accept- able when approved by the building official.

1705A.14.2.1 Structural sealant glazing testing. Testing and the manufacturer’s certification shall be in accordance with Section 2410.1.2.

1705 A .14.3 Special seismic certification . For structures assigned to Seismic Design Category D, E or F equipment and components that are subject to the requirements of Section 13.2.4 of ASCE 7 for special seismic certification, the registered design professional shall specify on the approved construction documents the requirements to be met by analysis or testing as specified therein. Certificates of compliance documenting that the requirements are met shall be submitted to the building official as specified in Section 1704 A .5.

Active or energized equipment and components shall be certified exclusively on the basis of approved shake table testing in accor- dance with ICC-ES AC 156 or equivalent shake table testing criteria approved by the building official. Minimum of two equipment/components shall be tested for a product line with similar structural configuration. Where a range of products are tested,

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the two equipment/components shall be either the largest and a small unit, or approved alternative representative equip- ment/components.

Exception: When a single product (and not a product line with more than one product with variations) is certified and manufactur- ing process is ISO 9001 certified, one test shall be permitted.

For a multi-component system, where active or energized components are certified by tests, connecting elements, attachments and supports can be justified by supporting analysis.

1705A.14.3.1 Special seismic certification. [OSHPD 1 & 4] Special seismic certification shall be required for the following systems, equipment and components: 1. Emergency and standby power systems. 2. Elevator equipment (excluding elevator cabs). 3. Components with hazardous contents.

4. Exhaust and smoke control fans.

5. Switchgear and switchboards.

6. Motor control centers.
CBC § 1705.14.1.2 High relevance — show source text
1705.14.1.2 Structural steel elements. Nondestructive testing 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 1705.14.1.1, 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, nondestructive testing of structural steel elements is 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, nondestructive testing of structural steel elements is not required for seismic force-resisting systems where design and detailing other than AISC 341 is permitted by ASCE 7, Table 15.4-1. Nondestructive testing of structural steel elements shall be in accordance with the applicable referenced standard listed in ASCE 7, Table 15.4-1.
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1705.14.2 Nonstructural components. For structures assigned to Seismic Design Category B, C, D, E or F, where the requirements of Section 13.2.1 of ASCE 7 for nonstructural components, supports or attachments are met by seismic qualification as specified in Item 2 therein, the registered design professional shall specify on the approved construction documents the requirements for seismic qualification by analysis, testing or experience data. Certificates of compliance for the seismic qualification shall be submitted to the building official as specified in Section 1704.5.

[OSHPD 1R, 2 & 5] Seismic sway bracing components satisfying requirements of ANSI/FM 1950, ANSI/ASHRAE 171, or using an alter- native testing protocol approved by the building official shall be deemed to satisfy the requirements of this section.

Note: Deemed to comply provisions provide acceptable options to comply with the code but do not mandate their use. Alternative systems in accordance with Section 104.2.3 and the California Administrative Code Section 7-104 are always acceptable when approved by the building official.

1705.14.3 Designated seismic systems. For structures assigned to Seismic Design Category C, D, E or F and with designated seismic systems that are subject to the requirements of Section 13.2.4 of ASCE 7 for certification, the registered design professional shall specify on the approved construction documents the requirements to be met by analysis, testing or experience data as specified therein. Certificates of compliance documenting that the requirements are met shall be submitted to the building official as specified in Section 1704.5.
CBC § 17-5 High relevance — show source text
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1704.3.2 Seismic requirements in the statement of special inspections. Where Section 1705.13 or 1705.14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the designated seismic systems and seismic force-resisting systems that are subject to the special inspections or tests. [OSHPD 1R, 2 & 5] Where Section 1705.13 or 1705.14 specifies special inspections or tests for seismic resistance, the statement of special inspections shall identify the equip- ment/components that require special seismic certification and seismic force-resisting systems that are subject to the special inspection or tests.

1704.3.3 Wind requirements in the statement of special inspections. Where Section 1705.12 specifies special inspection for wind resistance, the statement of special inspections shall identify the main windforce-resisting systems and wind-resisting components that are subject to special inspections.

1704.4 Contractor responsibility. Each contractor responsible for the construction of a main wind- or seismic force-resisting system, designated seismic system or a wind- or seismic force-resisting component listed in the statement of special inspections shall submit a written statement of responsibility to the building official and the owner or the owner’s authorized agent prior to the commencement of work on the system or component. The contractor’s statement of responsibility shall contain acknowledgement of awareness of the special requirements contained in the statement of special inspections.

1704.5 Submittals to the building official. In addition to the submittal of reports of special inspections and tests in accordance with Section 1704.2.4, reports and certificates shall be submitted by the owner or the owner’s authorized agent to the building official for each of the following:
1. Certificates of compliance for the fabrication of structural, load-bearing or lateral load-resisting members or assemblies on the premises of an approved fabricator in accordance with Section 1704.2.5.1.
2. Certificates of compliance for the seismic qualification of nonstructural components, supports and attachments in accordance with Section 1705.14.2.
3. Certificates of compliance for designated seismic systems in accordance with Section 1705.14.3.
4. Reports of preconstruction tests for shotcrete in accordance with ACI 318.
5. Certificates of compliance for open web steel joists and joist girders in accordance with Section 2207.5.
6. Reports of material properties verifying compliance with the requirements of AWS D1.4 for weldability as specified in Section 26.6.4 of ACI 318 for reinforcing bars in concrete complying with a standard other than ASTM A706 that are to be welded.
7. Reports of mill tests in accordance with Section 20.2.2.5 of ACI 318 for reinforcing bars complying with ASTM A615 and used to resist earthquake-induced flexural or axial forces in the special moment frames, special structural walls or coupling beams connecting special structural walls of seismic force-resisting systems in structures assigned to Seismic Design Category B, C, D, E or F.
1704.6 Structural observations. Where required by the provisions of Section 1704.6.1, the owner or the owner’s authorized agent shall employ a registered design professional to perform structural observations. The structural observer shall visually observe representative locations of structural systems, details and load paths for general conformance to the approved construction documents.
CBC § 3104F.5.2.1 High relevance — show source text
For new (N) nonstructural components, nonbuilding structures and building structures and their supports and attachments, seis- mic evaluation and design shall be performed in accordance with Section 3104F.5.2.1, except for piping/pipelines which shall be evaluated per Section 3109F.

3104F.5.2.1 Seismic evaluation, strengthening and design. For evaluation, strengthening and design of nonstructural compo- nents, nonbuilding structures and building structures, seismic forces (demands) shall be obtained from Section 3104F.5. The seismic adequacy of nonstructural components shall be demonstrated as specified in ASCE/SEI 7 [4.1]. Structures shall be analyzed in accordance with Section 3107F.5. Supports and attachments shall be assessed in accordance with Sections 3107F.7.

3104F.5.3 Contribution to global response of MOT structures. Nonstructural components, nonbuilding structures and building structures permanently attached to MOT structures, including, but not limited to, pipelines, loading arms, hose towers/racks, raised platforms, control rooms and vapor control equipment, may affect the global structural response. In such cases, the seismic charac- teristics (mass and/or stiffness) of the nonstructural components, nonbuilding structures and building structures shall be considered in computing global seismic response of the MOT structures. If the seismic response of nonstructural components is determined to be out of phase (e.g. pipelines) with the global structural response, then the mass contribution can be neglected in the seismic structural analysis.

3104F.5.4 Nonstructural components and nonbuilding structures permanently attached to MOT structures. This section covers nonstructural components and nonbuilding structures having a significant mass and/or importance to the operability and safety of the MOT, and that are permanently attached to MOT structures (e.g., wharves, trestles, dolphins). The weight of nonstructural compo- nents and nonbuilding structures shall be included in the dead load of the structure per Section 3103F.2.

Computation of seismic effects shall consider: 1. Amplification of acceleration from ground to location of attachment of the nonstructural component or nonbuilding struc- ture to the deck due to flexibility of the MOT structure, and 2. Amplification of acceleration due to flexibility of the nonstructural component or nonbuilding structure.

The following are not covered in this section and shall be assessed using rational approach that includes consideration of strength, stiffness, ductility and seismic interaction with all other connected components and with the supporting structures or systems, subject to Division approval: 1. Nonstructural component supported by other nonstructural system permanently attached to MOT structure;

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2. Nonstructural component or nonbuilding structure supported by other structure permanently attached to MOT structure; 3. Nonstructural component or nonbuilding structure attached to multiple MOT structures; 4. Nonstructural component or nonbuilding structure attached to structure and ground.

3104F.5.4.1 Seismic loads. This section specifies the procedure to compute seismic loads on nonstructural components and nonbuilding structures permanently attached to a MOT structure.
CBC § 3104F.5 High relevance — show source text
3104F.5 Nonstructural components, nonbuilding structures and building structures. Nonstructural components, nonbuilding struc- tures and building structures at MOTs shall be assessed for Level 2 seismic performance (see Section 3104F.2.1). Consideration shall be given to the adequacy and condition of supports and attachments (or anchorage), strength, flexibility, relative displacement, P-delta effects, and seismically-induced interaction with other components and structures.

3104F.5.1 General. Nonstructural components are mechanical, electrical and architectural components (such as piping/pipelines, loading arms, lifting equipment (winches and cranes), spill prevention equipment, pumps, instrumentation and storage cabinets, and lighting fixtures) that may be required to resist the effects of earthquake.

Nonbuilding structures (such as gangways, hose towers and racks) are self-supporting structures that carry gravity loads and may be required to resist the effects of earthquake, but are not building structures (such as control rooms). For building structures, see Section 3104F.5.6.

Critical systems are nonstructural components, nonbuilding structures or building structures that shall remain operational or those whose failure could impair emergency operations following an earthquake, to prevent major oil spills and to protect public health, safety and the environment. A seismic assessment of the survivability and continued operation (related to personnel safety, oil spill prevention or response) during a Level 2 earthquake (see Table 31F-4-1) shall be performed for critical systems, including but not limited to, fire protection, emergency shutdown and electrical power systems.

3104F.5.2 Seismic assessment. For existing (E) nonstructural components, nonbuilding structures and building structures and their supports and attachments, seismic assessment shall be performed in accordance with CalARP [4.8] or ASCE Guidelines [4.9], except for piping/pipelines which shall be evaluated per Section 3109F. If seismic evaluation and/or strengthening are required, it shall be performed in accordance with Section 3104F.5.2.1.

For new (N) nonstructural components, nonbuilding structures and building structures and their supports and attachments, seis- mic evaluation and design shall be performed in accordance with Section 3104F.5.2.1, except for piping/pipelines which shall be evaluated per Section 3109F.

3104F.5.2.1 Seismic evaluation, strengthening and design. For evaluation, strengthening and design of nonstructural compo- nents, nonbuilding structures and building structures, seismic forces (demands) shall be obtained from Section 3104F.5. The seismic adequacy of nonstructural components shall be demonstrated as specified in ASCE/SEI 7 [4.1]. Structures shall be analyzed in accordance with Section 3107F.5. Supports and attachments shall be assessed in accordance with Sections 3107F.7.

3104F.5.3 Contribution to global response of MOT structures. Nonstructural components, nonbuilding structures and building structures permanently attached to MOT structures, including, but not limited to, pipelines, loading arms, hose towers/racks, raised platforms, control rooms and vapor control equipment, may affect the global structural response. In such cases, the seismic charac- teristics (mass and/or stiffness) of the nonstructural components, nonbuilding structures and building structures shall be considered _in computing global seismic response of the MOT structures.
CBC § 1705.14.3. Medium relevance — show source text
1. Certificates of compliance for designated seismic systems in accordance with Section 1705.14.3.
2. Reports of preconstruction tests for shotcrete in accordance with ACI 318.
3. Certificates of compliance for open web steel joists and joist girders in accordance with Section 2207.5.
4. Reports of material properties verifying compliance with the requirements of AWS D1.4 for weldability as specified in Section 26.6.4 of ACI 318 for reinforcing bars in concrete complying with a standard other than ASTM A706 that are to be welded.
5. Reports of mill tests in accordance with Section 20.2.2.5 of ACI 318 for reinforcing bars complying with ASTM A615 and used to resist earthquake-induced flexural or axial forces in the special moment frames, special structural walls or coupling beams connecting special structural walls of seismic force-resisting systems in structures assigned to Seismic Design Category B, C, D, E or F.
1704.6 Structural observations. Where required by the provisions of Section 1704.6.1, the owner or the owner’s authorized agent shall employ a registered design professional to perform structural observations. The structural observer shall visually observe representative locations of structural systems, details and load paths for general conformance to the approved construction documents. Structural observation does not include or waive the responsibility for the inspections in Section 110 or the special inspections in Section 1705 or other sections of this code. Prior to the commencement of observations, the structural observer shall submit to the building official a written statement identifying the frequency and extent of structural observations. At the conclusion of the work included in the permit, the structural observer shall submit to the building official a written statement that the site visits have been made and identify any reported deficiencies that, to the best of the structural observer’s knowledge, have not been resolved.

1704.6.1 Structural observations for structures. Structural observations shall be provided for those structures where one or more of the following conditions exist:
1. The structure is classified as Risk Category III or IV.
2. The structure is a high-rise building.
3. The structure is assigned to Seismic Design Category E, and is greater than two stories above grade plane.
4. Such observation is required by the registered design professional responsible for the structural design.
5. Such observation is specifically required by the building official.
SECTION 1705—REQUIRED SPECIAL INSPECTIONS AND TESTS

1705.1 General. Special inspections and tests of elements and nonstructural components of buildings and structures shall meet the applicable requirements of this section.

1705.1.1 Special cases. Special inspections and tests shall be required for proposed work that is, in the opinion of the building official, unusual in its nature, such as, but not limited to, the following examples:
1. Construction materials and systems that are alternatives to materials and systems prescribed by this code.
2. Unusual design applications of materials described in this code.
3. Materials and systems required to be installed in accordance with additional manufacturer’s instructions that prescribe requirements not contained in this code or in standards referenced by this code.
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1705.2 Steel construction. The special inspections and nondestructive testing of steel construction in buildings, structures and portions thereof shall be in accordance with this section.
CBC § 319.1 Medium relevance — show source text
When evaluating for the Hazards Reduced Nonstructural Performance Level, the requirements need not be greater than what would be_
required by ASCE 7 nonstructural provisions for new construction.
2. Buildings evaluated and retrofitted to meet the structural and nonstructural requirements for a new building as given in the California Building Code as adopted by DSA or BSC, as
applicable, are deemed to meet the seismic performance requirements of this section.
3. Buildings complying with the requirements of the exception in Section 319.1 are deemed to meet the seismic performance requirements of this section.
4. State-owned and state-leased essential services buildings are subject to the regulatory authority of DSA-SS per Section 1.9.2.1.|1. ASCE 41 provides acceptance criteria (e.g., m-factor, rotation) for Immediate Occupancy (S1), Life Safety (S3) and Collapse Prevention (S5), and specifies in Table 2-1 the method
to interpolate values for S-2 and S-4. When evaluating for the Hazards Reduced Nonstructural Performance Level, the requirements need not be greater than what would be
required by ASCE 7 nonstructural provisions for new construction.
2. Buildings evaluated and retrofitted to meet the structural and nonstructural requirements for a new building as given in the California Building Code as adopted by DSA or BSC, as
applicable, are deemed to meet the seismic performance requirements of this section.
3. Buildings complying with the requirements of the exception in Section 319.1 are deemed to meet the seismic performance requirements of this section.
4. State-owned and state-leased essential services buildings are subject to the regulatory authority of DSA-SS per Section 1.9.2.1.|1. ASCE 41 provides acceptance criteria (e.g., m-factor, rotation) for Immediate Occupancy (S1), Life Safety (S3) and Collapse Prevention (S5), and specifies in Table 2-1 the method
to interpolate values for S-2 and S-4. When evaluating for the Hazards Reduced Nonstructural Performance Level, the requirements need not be greater than what would be
required by ASCE 7 nonstructural provisions for new construction.
2. Buildings evaluated and retrofitted to meet the structural and nonstructural requirements for a new building as given in the California Building Code as adopted by DSA or BSC, as
applicable, are deemed to meet the seismic performance requirements of this section.
3. Buildings complying with the requirements of the exception in Section 319.1 are deemed to meet the seismic performance requirements of this section.
4. State-owned and state-leased essential services buildings are subject to the regulatory authority of DSA-SS per Section 1.9.2.1.|1. ASCE 41 provides acceptance criteria (e.g., m-factor, rotation) for Immediate Occupancy (S1), Life Safety (S3) and Collapse Prevention (S5), and specifies in Table 2-1 the method
to interpolate values for S-2 and S-4. When evaluating for the Hazards Reduced Nonstructural Performance Level, the requirements need not be greater than what would be
required by ASCE 7 nonstructural provisions for new construction.
_2.
CBC § 1.9.2.1. Medium relevance — show source text
State-owned and state-leased essential services buildings are subject to the regulatory authority of DSA-SS per Section 1.9.2.1._|1. ASCE 41 provides acceptance criteria (e.g., m-factor, rotation) for Immediate Occupancy (S1), Life Safety (S3) and Collapse Prevention (S5), and specifies in Table 2-1 the method
to interpolate values for S-2 and S-4. When evaluating for the Hazards Reduced Nonstructural Performance Level, the requirements need not be greater than what would be
required by ASCE 7 nonstructural provisions for new construction.
2. Buildings evaluated and retrofitted to meet the structural and nonstructural requirements for a new building as given in the California Building Code as adopted by DSA or BSC, as
applicable, are deemed to meet the seismic performance requirements of this section.
3. Buildings complying with the requirements of the exception in Section 319.1 are deemed to meet the seismic performance requirements of this section.
4. State-owned and state-leased essential services buildings are subject to the regulatory authority of DSA-SS per Section 1.9.2.1.|1. ASCE 41 provides acceptance criteria (e.g., m-factor, rotation) for Immediate Occupancy (S1), Life Safety (S3) and Collapse Prevention (S5), and specifies in Table 2-1 the method
to interpolate values for S-2 and S-4. When evaluating for the Hazards Reduced Nonstructural Performance Level, the requirements need not be greater than what would be
required by ASCE 7 nonstructural provisions for new construction.
2. Buildings evaluated and retrofitted to meet the structural and nonstructural requirements for a new building as given in the California Building Code as adopted by DSA or BSC, as
applicable, are deemed to meet the seismic performance requirements of this section.
3. Buildings complying with the requirements of the exception in Section 319.1 are deemed to meet the seismic performance requirements of this section.
4. State-owned and state-leased essential services buildings are subject to the regulatory authority of DSA-SS per Section 1.9.2.1.|

317.6 Retrofit required. Where the evaluation indicates the building does not meet the required performance objectives of this section, the owner shall take appropriate steps to ensure that the building’s structural system is retrofitted in accordance with the provisions of Section 317. Appropriate steps are either: 1) undertake the seismic retrofit as part of the additions, alterations and/or repairs of the structure; or 2) provide a plan, acceptable to the building official, to complete the seismic retrofit in a timely manner. The relocation or moving of an existing building is considered to be an alteration requiring filing of the plans and specifications approved by the building official.

317.7 The additions, alteration or repair to any existing building are permitted to be prepared in accordance with the structural and nonstructural requirements for a new building as given in the California Building Code, applied to the entire building.

317.8 The requirements of ASCE 41 Chapters 14 and 15 are to apply to the use of seismic isolation and passive energy systems, respectively, for the repair, voluntary lateral-force-resisting system modification or retrofit of an existing structure. When seismic isolation or passive energy dissipation is used, the project must have project peer review as prescribed in Section 322.
CBC § 1907A.1. Medium relevance — show source text
Exceptions. Proof tests are not required for the following:

1. Undercut anchors that allow visual confirmation of full set.

2. Repetitively installed anchors (with 3 or more identical anchors) of diameter one-quarter ( [ 1] / 4 ) in. or less used for distributed systems or architectural components. 3. Power actuated fasteners used to attach tracks of interior nonstructural partition walls resisting only shear loads and with at least three fasteners per segment of track. 4. Shear dowels across cold joints in slabs on grade where the slab is not structural in accordance with Section 1907A.1.

1910A.5.1 General. Test loads or torques, test frequencies, and acceptance criteria shall be shown on the construction documents.

If any anchor fails testing, all untested anchors of the same type and installed by the same trade shall be tested until twenty (20) consecutive anchors pass, then resume the initial test frequency.

2025 CALIFORNIA BUILDING CODE 19A-9

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

CONCRETE

Anchors to be tested shall be selected at random by the special inspector or inspector of record (IOR), when 100 percent of the anchors are not tested.

The testing of the post-installed anchors shall be done in the presence of the special inspector and a report of the test results shall be submitted to the enforcement agency.

1910A.5.2 Proof testing procedure. Post-installed anchors shall be tension tested to verify proper installation in accordance with ASTM E3121 with test frequency and test loads in accordance with Sections 1910A.5.3 and 1910A.5.4, respectively. Tension tests do not require displacement measurement unless specified on the approved construction documents

Exception: Torque-controlled post-installed anchors and screw-type anchors shall be permitted to be tested using torque based on a valid evaluation report and criteria adopted in this code.

1910A.5.3 Test frequency.

1910A.5.3.1 Structural applications. 100 percent of post-installed anchors used for structural applications shall be proof tested.

Exceptions: 1. Sill bolts. When post-installed anchors are used for sill plate or bottom track bolting applications, 10 percent of the anchors shall be tested.

2. Rebar dowels. When adhesive anchor systems are used to install reinforcing dowel bars in hardened concrete, 25 percent of the dowels shall be tested if all of the following conditions are met: 2.1. The dowels are used exclusively to transmit shear forces across joints between existing and new concrete. 2.2. The number of dowels in any one member equals or exceeds 12. 2.3. The dowels are uniformly distributed across seismic force resisting members (such as shear walls, collectors and diaphragms).

1910A.5.3.2 Nonstructural applications. 50 percent of post-installed anchors used in nonstructural applications shall be proof tested. The percentage of tested anchors applies to each set of anchors of a common type (e.g., adhesive, wedge, or shell and sleeve for expansion bolts), size, and embedment depth and to each group of anchors. Four or more anchors connected to a common element shall be defined as a group.
CBC § 3104F.5.4.1.2 Medium relevance — show source text
0_
3.5
8.0
4.5
3.5
6.5
6.5
2.0| |Other|Subject to Division approval| |1. A higher value may be utilized, subject to Division approval.|1. A higher value may be utilized, subject to Division approval.|

3104F.5.4.1.2 Linear modal demand procedure. The linear modal demand procedure (Section 3104F.2.3.3) may always be used and shall be used to estimate seismic forces when the Simplified Procedure (Section 3104F.5.4.1.1) is not permitted. The MOT structure and nonstructural components and/or nonbuilding structures shall be modeled explicitly. The seismic forces obtained from the linear modal demand procedure shall be adjusted for appropriate importance factors and response modifi- cation factors as specified in Table 31F-4-4 and Table 31F-4-5.

3104F.5.5 Nonstructural components and nonbuilding structures permanently attached to the ground. The seismic load shall be computed using the procedures in ASCE/SEI 7 [4.1], except that Level 2 design earthquake motion parameters defined in Section 3103F.4 shall be used in lieu of those specified in ASCE/SEI 7 [4.1].

3104F.5.6 Building structures. For buildings permanently attached to MOT structure, Section 3104F.5.4.1 shall be used to compute seismic loads. Computation of seismic effects shall consider: 1. Amplification of acceleration from ground to location of attachment of the building to the deck due to flexibility of the MOT structure, and

2. Amplification of acceleration due to flexibility of the building.

For buildings permanently attached to the ground, seismic loads shall be computed using the procedures in ASCE/SEI 7 [4.1], as amended by the local enforcing agency requirements, subject to Division approval.

3104F.6 Symbols.

a = Site class factor

a p = Amplification factor for nonstructural component or nonbuilding structure A x = Torsional amplification factor

C 1 = Modification factor to relate expected maximum inelastic displacement to displacement calculated for linear elastic response

C 2 = Modification factor to represent the effects of pinched hysteresis shape, cyclic stiffness degradation and strength deterioration on the maximum displacement response

e = Eccentricity between center of mass and center of rigidity F d, i = Force at step i of iteration F d, j = Force at step j of iteration F p = Horizontal seismic force on nonstructural component, nonbuilding structure or building structure supported on MOT F v = Vertical seismic force on nonstructural component, nonbuilding structure or building structure supported on MOT F y = Effective yield strength H = Distance from maximum in-ground moment to center of gravity of the deck I p = Importance factor for nonstructural component or nonbuilding structure k e = Effective elastic lateral stiffness k eff, i = Effective secant lateral stiffness at step i of iteration k _eff,
CBC § 14.1 Medium relevance — show source text
1705 A .14.1 Structural steel. Nondestructive testing for seismic resistance shall be in accordance with Section 1705 A .14.1.1 or 1705 A .14.1.2, as applicable.

1705 A .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 D, E or F shall be performed in accordance with the quality assurance requirements of AISC 341 and this code.

[DSA-SS, DSA-SS/CC] Quality assurance application is not permitted for the following AISC 341, Chapter J Section: 1. J7 (Welding Inspection and Nondestructive Testing).

Additionally, the applicable portions in Table 1705A.2.1 of the California Building Code shall apply.

1705 A .14.1.2 Structural steel elements. Nondestructive testing of structural steel elements in the seismic force-resisting systems of buildings and structures assigned to Seismic Design Category D, E or F other than those covered in Section 1705 A .14.1.1, including struts, collectors, chords and foundation elements, shall be performed in accordance with the quality assurance requirements of AISC 341 and this code.

[DSA-SS, DSA-SS/CC] Quality assurance application is not permitted for the following AISC 341, Chapter J Section: 1. J7 (Welding Inspection and Nondestructive Testing).

Additionally, the applicable portions in Table 1705A.2.1 of the California Building Code shall apply.

1705 A .14.2 Nonstructural components. For structures assigned to Seismic Design Category D, E or F, where the requirements of Section 13.2.1 of ASCE 7 for nonstructural components, supports or attachments are met by manufacturer’s certification as specified in Item 2 therein, the registered design professional shall specify on the approved construction documents the requirements for seismic certification by analysis or testing.

Seismic sway bracing components satisfying requirements of ANSI/FM 1950, ANSI/ASHRAE 171, or using an alternative testing protocol approved by the building official shall be deemed to satisfy the requirements of this section.

[OSHPD 1 & 4] Note: Deemed to comply provisions provide acceptable options to comply with the code but do not mandate their use. Alternative systems in accordance with Section 104.2.3 and the California Administrative Code Section 7-104 are always accept- able when approved by the building official.

1705A.14.2.1 Structural sealant glazing testing. Testing and the manufacturer’s certification shall be in accordance with Section 2410.1.2.

1705 A .14.3 Special seismic certification . For structures assigned to Seismic Design Category D, E or F equipment and components that are subject to the requirements of Section 13.2.4 of ASCE 7 for special seismic certification, the registered design professional shall specify on the approved construction documents the requirements to be met by analysis or testing as specified therein. Certificates of compliance documenting that the requirements are met shall be submitted to the building official as specified in Section 1704 A .5.

Frequently asked questions

Who must provide the certificate of compliance and when?

The owner or the owner’s authorized agent must submit the certificates of compliance to the building official; the RDP must document the required method on the approved construction documents so the certificates can demonstrate compliance at submittal/inspection per §1704.5 and §1705.14 .

Does every light fixture or cabinet need a certificate?

No. The requirement applies where ASCE 7 and the CBC trigger seismic qualification/certification for nonstructural components in the applicable SDCs; small common items not covered by ASCE 7 provisions or below the ASCE 7 thresholds may not require a certificate (§1705.14.2) .

Can a manufacturer’s datasheet alone satisfy the requirement?

Only when the RDP has specified that manufacturer’s certification (or experience data) is an acceptable basis on the approved construction documents and ASCE 7/CBC allow that path; otherwise analysis or testing as specified is required (§1705.14.2) .

What if the product meets an ANSI or FM standard?

Certain sway‑bracing components that meet ANSI/FM 1950 or ANSI/ASHRAE 171 are deemed to satisfy §1705.14.2 where specified, but building‑official acceptance is still required; these are code-provided options, not mandatory requirements (§1705.14.2) .

Are there stricter rules for hospitals or life‑safety equipment?

Yes — the Code and its California amendments list life‑safety systems and medical/life‑support equipment among items requiring special seismic certification; active/energized equipment often requires shake‑table testing per the California guidance (§1705A.14.3 and §1705A.14.3.1) .

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Seismic, Wind, Nonstructural Seismic Certification, Fire & Smoke Testing

California Building Code