CRSC · California Referenced Standards Code
How does the CRSC define significant degradation and expected longevity?
In the CRSC, “significant degradation” is defined as a product keeping at least 90% of its approved design characteristics (see **§ 12-11A.210**/**§ 12-11B.210**), and for detectable warning/directional surface products the code requires no significant degradation of listed attributes for at least five years (**§ 12-11A.209**/**§ 12-11B.209**) .
Last reviewed: July 6, 2026
What the code requires — plain English
- The CRSC defines Significant degradation as when a product retains at least 90 percent of its approved design characteristics — anything less is considered significant degradation (§ 12-11A.210, § 12-11B.210) .
- For Detectable Warning Products and Directional Surfaces, several attributes (shape, color fastness, conformation, sound‑on‑cane acoustic quality, resilience and attachment) “will not degrade significantly for at least five years” — i.e., the code expects those products to meet the non‑degradation criterion through a 5‑year minimum period (§ 12-11A.209, § 12-11B.209) .
Most important rule: “Significant degradation” = the product still meets ≥90% of its approved design characteristics; detectable warnings/directional surfaces must not show significant degradation for at least five years (see § 12-11A.210 and § 12-11A.209) .
Requirements in detail
Defined term (code text)
- Significant degradation — The product maintains at least 90 percent of its approved design characteristics. This is the CRSC definition in § 12-11A.210 and § 12-11B.210 .
What “expected longevity” the CRSC states (product class-specific)
- For the specific product group Detectable Warning Products and Directional Surfaces, the CRSC requires that these products’ listed attributes “will not degrade significantly for at least five years” — see § 12-11A.209 and § 12-11B.209 .
- The CRSC text provided does not give a single, general “expected longevity” definition that applies to every product; the five‑year statement is explicit for detectable warnings/directional surfaces only. If you need a different product type, the code text retrieved does not show a general expected‑longevity rule beyond these sections .
Decision‑relevant dimensions (quick table)
| Decision dimension | Required value / threshold | Where to find it (Code Reference) |
|---|---|---|
| Definition of Significant Degradation | Product retains ≥ 90% of approved design characteristics | § 12-11A.210, § 12-11B.210 |
| Minimum non‑degradation period for Detectable Warnings / Directional Surfaces | At least 5 years | § 12-11A.209, § 12-11B.209 |
| Design characteristics listed (examples) | Shape, color fastness, conformation, sound‑on‑cane acoustic quality, resilience, attachment | § 12-11A.209, § 12-11B.209 |
| Independent verification role | Independent entity evaluation required to confirm product performance | § 12-11A.211, § 12-11B.211 |
How the code ties these together (process-level notes)
- The CRSC pairs the numeric definition (≥90%) with product-specific durability expectations (5 years for detectable warnings/directional surfaces). The code also contemplates evaluation/certification by an independent entity to confirm compliance (§ 12-11A.211 / § 12-11B.211) .
- The code text shown does not provide specific test methods, measurement units, sampling procedures, or pass/fail test protocols in § 12-11A.210 or § 12-11B.210 itself. Where test methods are needed they are typically referenced elsewhere (for these products, see the surrounding sections and referenced standards) — but those method references are not fully reproduced in the retrieved excerpt .
Exceptions & special cases
- The explicit 5‑year minimum in the CRSC applies to the listed attributes of Detectable Warning Products and Directional Surfaces (§ 12-11A.209, § 12-11B.209) — it is not a blanket longevity statement for all product types in the CRSC as shown in the retrieved text .
- The code excerpt does not describe alternate thresholds (e.g., 85% for some characteristics) or conditional allowances; the single numeric threshold in the retrieved text is 90% in § 12-11A.210 / § 12-11B.210 .
- The CRSC assigns the Division (Division of the State Architect–Access Compliance) authority for fees, recertification cycles and selection of independent entities for product evaluation (see related sections) — these administrative provisions affect how longevity and degradation determinations are carried out but are not additional numeric thresholds in § 12-11A.210 / § 12-11B.210 .
Common mistakes
- Mistake: Interpreting “90%” as allowing a 90% loss (i.e., allowing only 10% remaining). Correction: 90% is the retained amount; products that fall below 90% of their approved design characteristics are considered to have significant degradation under § 12-11A.210 / § 12-11B.210 .
- Mistake: Assuming the 5‑year durability statement is universal for every CRSC product. Correction: The 5‑year statement is explicit for Detectable Warning Products and Directional Surfaces in § 12-11A.209 / § 12-11B.209; other product types are not covered in the retrieved text .
- Mistake: Expecting full test procedures or pass/fail measurement steps in § 12-11A.210. Correction: § 12-11A.210 / § 12-11B.210 contain the definition (90%) but not the laboratory or field test protocols — those are handled by referenced standards or by independent entity evaluation per other sections .
Worked example — concrete scenario with numbers
Scenario: A manufacturer’s approved design specification for a detectable warning tile lists an approved acoustic detection metric (sound‑on‑cane quality) value = 100 units at time of approval. The product has been in service for 5 years.
- Measured sound‑on‑cane value after 5 years = 92 units (i.e., 92% of approved value).
- Result: 92% ≥ 90%, so by the CRSC definition the product has not experienced significant degradation for that characteristic under § 12-11A.210 / § 12-11B.210. If all other listed attributes likewise remain ≥90%, the product meets the non‑degradation expectation for the 5‑year period identified in § 12-11A.209 / § 12-11B.209 .
- If a different attribute (for example, color fastness) measured after 5 years is 88% of the approved specification:
- Result: 88% < 90%, therefore that attribute has experienced significant degradation per § 12-11A.210 / § 12-11B.210 and the product would not meet the non‑degradation expectation in § 12-11A.209 / § 12-11B.209 for the 5‑year period .
Note: The code text provided does not spell out exact measurement methods for quantifying “100 units” or how to aggregate multiple attributes into a single pass/fail determination — those procedural details would come from referenced standards or the independent entity evaluation process described elsewhere in the CRSC excerpts .
Related provisions
- § 12-11A.209 — Detectable Warning Products and Directional Surfaces: attributes that “will not degrade significantly for at least five years” .
- § 12-11B.209 — Companion provision for the B (alternate) article; same 5‑year statement for those product types .
- § 12-11A.211 and § 12-11B.211 — Selection of an independent entity to evaluate and confirm compliance with the referenced standards and performance criteria .
- § 12-11A.206 / § 12-11B.206 — Two‑year approval/recertification cycle referenced in the same article (administrative context) .
If you need: I can extract the exact surrounding CRSC text for § 12-11A.209–211 or search for the test standards the CRSC references for detectable warning products (to show specific measurement/test methods). The retrieved excerpt defines the numeric threshold and the five‑year expectation but does not include the laboratory or field test protocols themselves .
Code references
Grounded in the retrieved California Referenced Standards Code — click a citation to read the verbatim passage:
CRSC § 12-11 High relevance — show source text
DETECTABLE WARNING PRODUCTS
Sections 12-11A.203 and 12-11B.203. Must comply with the California Code of Regulations, Title 24.
DIRECTIONAL SURFACES
Sections 12-11A.204 and 12-11B.204. Must comply with the California Code of Regulations, Title 24.
INDEPENDENT ENTITY
Sections 12-11A.205 and 12-11B.205. Evaluation by an independent entity to confirm the prescriptive and performance standard of detectable warning products or direction surfaces installed after January 1, 2001. An independent entity is a not-for-profit product safety testing and certification organization, dedicated to testing for public safety. An independent entity would operate for the testing, certification and quality assessment of products, systems and services.
TWO-YEAR APPROVAL
Sections 12-11A.206 and 12-11B.206. Detectable warning products and directional surfaces are to be recertified every two years without exception or waiver.
FEE
Sections 12-11A.207 and 12-11B.207. The Division of the State Architect-Access Compliance may impose a fee on manufacturers of the specified products, to cover the cost of detectable warning products and directional surfaces.
DISABILITY ACCESS ACCOUNT
Sections 12-11A.208 and 12-11B.208. The fees received from manufacturers will be placed in the Disability Access Account.
DETECTABLE WARNING PRODUCTS AND DIRECTIONAL SURFACES
Sections 12-11A.209 and 12-11B.209. Detectable Warning Products and Directional Surfaces must ensure consistency and uniformity: (a) Shape, (b) Color fastness,
(c) Conformation, (d) Sound-on-cane acoustic quality, (e) Resilience, and (f) Attachment will not degrade significantly for at least five years.
SIGNIFICANT DEGRADATION
Sections 12-11A.210 and 12-11B.210. Significant degradation means that the product maintains at least 90 percent of its approved design characteristics.
SELECTION OF INDEPENDENT ENTITY
Sections 12-11A.211 and 12-11B.211. The independent entity selected by the Division of the State Architect-Access Compliance shall be recognized as having appropriate expertise in determining whether products comply with the California Code of Regulations, Title 24.
Authority: Government Code Sections 4450, 4460 and Health & Safety Code Section 18949.1.
Reference: Government Code Section 4460.
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12-13 STANDARDS FOR INSULATING MATERIAL
(See Part 6, Title 24, CCR)
DEPARTMENT OF CONSUMER AFFAIRS
Bureau of Household Goods and Services
CRSC § 12-11 High relevance — show source text
(c) Conformation, (d) Sound-on-cane acoustic quality, (e) Resilience, and (f) Attachment will not degrade significantly for at least five years.
SIGNIFICANT DEGRADATION
Sections 12-11A.210 and 12-11B.210. Significant degradation means that the product maintains at least 90 percent of its approved design characteristics.
SELECTION OF INDEPENDENT ENTITY
Sections 12-11A.211 and 12-11B.211. The independent entity selected by the Division of the State Architect-Access Compliance shall be recognized as having appropriate expertise in determining whether products comply with the California Code of Regulations, Title 24.
Authority: Government Code Sections 4450, 4460 and Health & Safety Code Section 18949.1.
Reference: Government Code Section 4460.
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12-13 STANDARDS FOR INSULATING MATERIAL
(See Part 6, Title 24, CCR)
DEPARTMENT OF CONSUMER AFFAIRS
Bureau of Household Goods and Services
ARTICLE 3. STANDARDS FOR INSULATING MATERIAL
APPLICATION AND SCOPE
Sec. 12-13-1551.
(a) This article establishes standards governing the quality of insulation sold within the state after September 22, 1981, including those properties which affect the safety and thermal performance of insulation during application and in the use intended.
(b) The provisions of this article shall apply only to the following types of insulating material:
Aluminum foil (reflective foil);
Cellular glass (board form);
Cellulose fiber (loose fill and spray applied);
Mineral aggregate (board form);
Mineral fiber (blankets, board form, loose fill);
Perlite (loose fill);
Polystyrene (board form, molded and extruded);
Polyurethane (board form and field applied);
Polyisocyanurate (board form and field applied);
Urea formaldehyde foam (field applied);
Vermiculite (loose fill).
(c) The provisions of this article shall apply to the sale of insulating material within the state. The provisions of this article shall not apply to insulating material manufactured in California, but sold outside the state, nor to insulating material manufactured outside California and sold wholesale in California for final retail sale outside the state. For the purpose of this article, the sale of a building or an appliance which contains installed insulating material is not considered the sale of the insulating material.
(d) Any type of insulating material not listed in subsection (b) may be sold within California notwithstanding any other provision of this article.
Authority: Sections 25920 and 25922, Public Resources Code.
Reference: Sections 25910, 25920, 25921 and 25922, Public Resources Code.
CRSC § 4.1 Medium relevance — show source text
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, j = Effective secant lateral stiffness at step j of iteration L l = Longitudinal length between wharf expansion joints
m = Seismic mass
R p = Response modification factor for nonstructural component or nonbuilding structure S A = Spectral response acceleration at T
2025 CALIFORNIA BUILDING CODE 31F-45
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MARINE OIL TERMINALS
S xs = Spectral acceleration in Section 3103F.4.2.4 or Section 3103F.4.2.5
S 1 = 1-second spectral response acceleration
T = Fundamental period of the elastic structure
T e = Effective elastic structural period T eff, i = Effective structural period at step i of iteration T p = Period of flexible nonstructural component or nonbuilding structure T 0 = Period at peak of the acceleration response spectrum
V = Base shear strength of the structure obtained from a plastic analysis
V sk = Shear force across shear keys
V Δ T = Total segment lateral force
W = Dead load of the frame
W p = Weight of the nonstructural component or nonbuilding structure Δ d = Target displacement demand Δ d, i = Target displacement demand at step i of iteration Δ d, j = Target displacement demand at step j of iteration α 1 = Positive post-yield slope ratio equal to positive post-yield stiffness divided by the effective stiffness
α 2 = Negative post-yield slope ratio equal to negative post-yield stiffness divided by the effective stiffness
CRSC § 9-0 Medium relevance — show source text
000|9-0|10-1|7-9|8-0|7-3|6-6|6-1|5-0|4-11| |16i|2-#4
1-#6|60,000|11-5|13-10|9-2|9-8|8-3|7-2|6-6|5-2|5-1| |16i|Center distance_A_m, n|Center distance_A_m, n|1-6|1-11|1-2|1-3|1-0|0-10|0-8|STL|STL| |20i|Span without stirrupsk, l|Span without stirrupsk, l|4-10|5-5|4-5|4-7|4-3|4-0|3-11|3-7|3-7| |20i|1-#4|40,000|7-0|8-1|6-3|6-5|5-10|5-3|4-11|4-1|3-11| |20i|1-#4|60,000|8-7|9-10|7-7|7-10|7-1|6-5|6-0|4-11|4-10| |20i|1-#5|40,000|8-9|10-1|7-9|8-0|7-3|6-6|6-1|5-1|4-11| |20i|1-#5|60,000|10-8|12-3|9-6|9-10|8-10|8-0|7-5|6-2|6-0| |20i|2-#4
1-#6|40,000|9-10|11-4|8-9|9-1|8-2|7-4|6-10|5-8|5-7| |20i|2-#4
1-#6|60,000|12-0|13-10|10-8|11-0|9-11|9-0|8-4|6-8|6-6| |20i|2-#5|40,000|12-3|14-1|10-10|11-3|10-2|8-11|8-1|6-6|6-4| |20i|2-#5|60,000|14-0|17-6|11-8|12-3|10-6|9-1|8-4|6-8|6-6| |20i|Center distance_A_m, n|Center distance_A_m, n|1-10|2-5|1-5|1-7|1-3|1-0|0-11|STL|STL|6-150 2025 CALIFORNIA RESIDENTIAL CODE
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WALL CONSTRUCTION
|TABLE R608.8(7)—MAXIMUM ALLOWABLE CLEAR
SPANS FOR 8-INCH-THICK WAFFLE-GRID LINTELS IN LOAD-BEARING WALLSa, b, c, d, e, f,CRSC § 31F-7 Medium relevance — show source text
where:
A s = Area of slab stirrups on one side of joint h d = See Figure 31F-7-9 (deck thickness)
d c = Depth from edge of concrete to center of main reinforcement In addition, the bottom deck steel (A s, deckbottom ) area within h d /2 of the face of the pile shall satisfy: Equation 7-29 A s, deckbottom ≥ 0.5 · A s
FIGURE 31F-7-12 — JOINT ROTATION
4. Using the same initial stiffness as in Section 3107F.2.5.4, the moment-curvature relationship established for the pile top can now be adjusted to account for the joint degradation. The adjusted yield curvature, φ′ y , can be found from:
Equation 7-30
= φ --------- y M - c φ′ y M p
where:
M p = Idealized plastic moment capacity from Method A or B (see Figure 31F-7-4 or 31F-7-5, respectively) The plastic curvature, φ p , corresponding to a joint rotation of 0.04 can be calculated as:
Equation 7-31
φ p = 0.04--------L p -
where:
L p = Plastic hinge length as determined from Equation (7-5) The adjusted ultimate curvature, φ ′ u , can now be calculated as:
2025 CALIFORNIA BUILDING CODE 31F-71
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MARINE OIL TERMINALS
Equation 7-32where: φ′ u = φ p + φ ------------- y MM pc r,
M p = Idealized plastic moment capacity from Method A or B (see Figure 31F-7-4 or 31F-7-5, respectively)
M c,r = 0, unless deck stirrups are present as discussed above. Examples of adjusted moment curvature relationships are shown in Figure 31F-7-13 .
FIGURE 31F-7-13 — EQUIVALENT PILE CURVATURE
3107F.2.7.2 Development length. The minimum development length, l dc , is:
Equation 7-33
l dc ≥ 0.025 d------------------------------ ⋅ f ′ cb f ⋅ ye -
where:
d b = dowel bar diameter f ye = expected yield strength of dowel f ′ c = compressive strength of concrete In assessing existing details, actual or estimated values for f ye and f' c rather than nominal strength should be used in accor- dance with Section 3107F.2.1.1.
CRSC § 12-7 Medium relevance — show source text
12-7A-4.8.4 Report. The report shall include description of the deck board material, and the time of any degradation (accelerated combustion, board collapse, flaming drops or particles falling from the deck).
12-7A-4.8.5 Conditions of Acceptance. Should one of the three replicates fail to meet the Conditions of Acceptance, three additional tests may be run. All of the additional tests must meet the Conditions of Acceptance:
- Absence of sustained flaming or glowing combustion of any kind at the conclusion of the 40-minute observation period.
- Absence of falling particles that are still burning when reaching the burner or floor.
FIGURE 1 — DECK TEST ASSEMBLY (UNDER DECK-FLAME)
FIGURE 2 — DECK TEST ASSEMBLY (BURNING-BRAND)
2025 CALIFORNIA REFERENCED STANDARDS CODE 47
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MATERIALS AND CONSTRUCTION METHODS FOR EXTERIOR WILDFIRE EXPOSURE
DECKING ALTERNATE METHOD A
SFM STANDARD 12-7A-4A
12-7A-4A.1 Application. The minimum design, construction and performance standards set forth herein for unloaded decks are those deemed necessary to establish conformance to the provisions of these regulations. Materials and assemblies that meet the performance criteria of this standard are acceptable for use as defined in the California Building Standards Code.
12-7A-4A.2 Scope. This standard evaluates the performance of decks (or other horizontal ancillary structures in close proximity to primary structures) when exposed to direct flames and brands. The under-deck flame exposure test is intended to determine the heat release rate (HRR) and degradation modes of deck or other horizontal boards when exposed to a burner flame simulating combustibles beneath a deck. The burning brand exposure test is intended to determine the degradation modes of deck or other horizontal boards when exposed to a burning brand on the upper surface.
12-7A-4A.3 Referenced document.
- ASTM E108. Standard Test Methods for Fire Tests of Roof Coverings.
- California Building Code, Chapter 7A.
12-7A-4A.4 Definitions.
- Deck boards. Horizontal members that constitute the exposed surface of the ancillary structure.
- Heat release rate. The net rate of energy release as measured by oxygen depletion calorimetry.
12-7A-4A.5 Test assembly.
- Size. The overall size of the test deck shall be nominally 24 x 24 inches (610 x 610 mm) unless width variation of deck boards requires an increase in overall deck width (i.e., the direction of joists) in order to meet the overall dimensions. The length of individual deck boards shall be 24 inches (610 mm).
- Joists. The deck is supported by two nominal 2 x 6 Douglas-fir joists running perpendicular to the deck boards, and constructed with a 16-inch (406 mm) center-to-center spacing. A comparable species that may be more commonly used for structural framing of decks in a given region can be substituted for Douglas-fir.
- Deck board spacing and fastening. Edge-to-edge spacing and method of attachment shall conform to the manufacturer’s installation recommendations.
CRSC § 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,
CRSC § 1.03 Medium relevance — show source text
ENDWALL**
LENGTH
(feet)|** ROOF**
SLOPE|** —| —| —| 110D**|** 117D**|** 125D**|** 125D**| |15|15|< 1:12|1.03|1.12|1.32|1.53|1.76|2.00|0.92| |15|15|5:12|1.43|1.56|1.83|2.12|2.43|2.77|1.15| |15|15|7:12|2.00|2.18|2.56|2.97|3.41|3.88|1.25| |15|15|12:12|3.20|3.48|4.09|4.74|5.44|6.19|1.54| |15|30|< 1:12|1.03|1.12|1.32|1.53|1.76|2.00|0.98| |15|30|5:12|1.43|1.56|1.83|2.12|2.43|2.77|1.43| |15|30|7:12|2.78|3.03|3.56|4.13|4.74|5.39|1.64| |15|30|12:12|5.17|5.63|6.61|7.67|8.80|10.01|2.21| |15|45|< 1:12|1.03|1.12|1.32|1.53|1.76|2.00|1.04| |15|45|5:12|1.43|1.56|1.83|2.12|2.43|2.77|1.72| |15|45|7:12|3.57|3.88|4.56|5.28|6.07|6.90|2.03| |15|45|12:12|7.15|7.78|9.13|10.59|12.16|13.84|2.89| |15|60|< 1:12|1.03|1.12|1.32|1.53|1.76|2.00|1.09| |15|60|5:12|1.43|1.56|1.83|2.12|2.43|2.77|2.01| |15|60|7:12|4.35|4.73|5.55|6.44|7.39|8.41|2.42| |15|60|12:12|9.12|9.93|11.66|13.52|15.52|17.66|3.57|2025 CALIFORNIA RESIDENTIAL CODE 6-127
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WALL CONSTRUCTION
|TABLE R608.7.1.1(1)—UNREDUCED LENGTH, UR, OF SOLID WALL REQUIRED IN EACH
EXTERIOR ENDWALL FOR WIND PERPENDICULAR TO RIDGE ONE STORY OR TOP STORY OF TWO STORYa, c, d, e, f,CRSC § 2-2 Medium relevance — show source text
ceiling and
two clear span
floors|2-2 × 8|4-3|2|3-3|2|2-8|2|4-3|2|3-3|2|2-8|2|4-1|2|3-2|2|2-8|3| |Roof, ceiling and
two clear span
floors|2-2 × 10|5-0|2|3-10|2|3-2|3|5-0|2|3-10|2|3-2|3|4-10|2|3-9|3|3-2|3| |Roof, ceiling and
two clear span
floors|2-2 × 12|5-11|2|4-6|3|3-9|3|5-11|2|4-6|3|3-9|3|5-8|2|4-5|3|3-9|3| |Roof, ceiling and
two clear span
floors|3-2 × 8|5-3|1|4-0|2|3-5|2|5-3|2|4-0|2|3-5|2|5-1|2|3-11|2|3-4|2| |Roof, ceiling and
two clear span
floors|3-2 × 10|6-3|2|4-9|2|4-0|2|6-3|2|4-9|2|4-0|2|6-1|2|4-8|2|4-0|3| |Roof, ceiling and
two clear span
floors|3-2 × 12|7-5|2|5-8|2|4-9|3|7-5|2|5-8|2|4-9|3|7-2|2|5-6|3|4-8|3| |Roof, ceiling and
two clear span
floors|4-2 × 8|6-1|1|4-8|2|3-11|2|6-1|1|4-8|2|3-11|2|5-11|1|4-7|2|3-10|2| |Roof, ceiling and
two clear span
floors|4-2 × 10|7-3|2|5-6|2|4-8|2|7-3|2|5-6|2|4-8|2|7-0|2|5-5|2|4-7|2| |Roof, ceiling and
two clear span
floors|4-2 × 12|8-6|2|6-6|2|5-6|2|8-6|2|6-6|2|5-6|2|8-3|2|6-4|2|5-4|3| |For SI: 1 inch = 25.4 mm, 1 pound per square foot = 0.0479 kPa.
a. Spans are given in feet and inches.
b. Spans are based on minimum design properties for No. 2 grade lumber of Douglas fir-larch, hem-fir, Southern pine and spruce-pine fir.
c. Building width is measured perpendicular to the ridge. For widths between those shown, spans are permitted to be interpolated.
d.CRSC § 7-6 Medium relevance — show source text
Alternatively, if Equation 7-6 is not satisfied and retrofit is not performed, the_ wall contribution to the lateral resisting system shall be ignored. For all other building type conditions, Equation 7-6 shall not be used.
304A.3.5.5 ASCE 41-13 Section 7.3.2.1. Modify ASCE 41-13 Section 7.3.2.1 with the following:
Nonlinear Static Procedure. If higher mode effects are significant and building is taller than 75 feet above the base, the Nonlin- ear Dynamic Procedure shall be used.
304A.3.5.6 ASCE 41-13 Section 7.5.1. Modify ASCE 41-13 Section 7.5.1 with the following:
Acceptance Criteria – Drift Limitations. The interstory drift ratio shall not exceed the drift limits for Risk Category IV buildings in ASCE 7 Table 12.12-1 due to forces corresponding to BSE-1E or BSE-1N, as applicable.
Exception: Larger interstory drift ratios shall be permitted where justified by rational analysis that items identified in Chap- ter 6 Article 10 of the California Administrative Code can tolerate such drift and approved by the enforcement agent.
304A.3.5.7 ASCE 41-13 Section 7.5.1.4. Modify ASCE 41-13 Section 7.5.1.4 by the following:
Material Properties. Expected material properties are not permitted to be determined by multiplying lower bound values by the assumed factors specified in Chapters 8 through 12 and shall be based exclusively on materials tests.
304A.3.5.8 ASCE 41-13 Section 8.4. Modify ASCE 41-13 Section 8.4 with the following:
Foundation Strength and Stiffness. Foundation and soil strength shall be used to evaluate potential overturning, uplift and sliding for fixed base assumptions, and stiffness for flexible base assumptions, including deformations associated with those actions.
304A.3.5.9 ASCE 41-13 Section 8.4.1.1. Replace ASCE 41-13 Section 8.4.1.1 as follows:
Prescriptive Expected Capacities. Not permitted by OSHPD.
304A.3.5.10 ASCE 41-13 Section 8.4.2.3.2.1. Modify ASCE 41-13 Sections 8.4.2.3.2.1 and 8.4.2.3.2.2 as follows:
8.4.2.3.2.1 Alternatively, when seismic evaluation is performed for foundation after global analysis of the superstructure is complete, both overturning and axial seismic pseudo force demands are permitted to be divided by the m-factors above, provided the foundation is analyzed as a beam on Winkler springs (soil does not resist tension). The vertical spring stiffness _values may be determined either from Figure 8-2 or Equation 8-11, or as provided by the geotechnical engineer.
CRSC § 904.2 Medium relevance — show source text
(c) The owner or occupant shall promptly correct or repair deficiencies, damaged parts or impairments found while performing the inspection, test and maintenance requirements of this standard. Recalled products shall be replaced or remedied. Such replacement or remedial product shall be installed in accordance with the listing requirements, the manufacturer’s instructions and the appropri- ate NFPA installation standards. A recalled product is a product subject to a statute or administrative regulation specifically requiring the manufacturer, importer, distributor, wholesaler or retailer of a product, or any combination of such entities, to recall the product, or a product voluntarily recalled by a combination of such entities.
[California Code of Regulations, Title 19, Division 1, §904.2(d)] Testing and Maintenance Requirements.
(d) The building or system owner shall ensure immediate correction of any deficiencies noted during the service. A tag or label shall be affixed to a system only after all deficiencies have been corrected. The owner or occupant shall promptly correct or repair deficien- cies, damaged parts or impairments found while performing the inspection, test and maintenance requirements of this standard. Recalled products shall be replaced or remedied. Such replacement or remedial product shall be installed in accordance with the list- ing requirements, the manufacturer’s instructions and the appropriate NFPA installation standards. A recalled product is a product subject to a statute or administrative regulation specifically requiring the manufacturer, importer, distributor, wholesaler or retailer of a product, or any combination of such entities, to recall the product, or a product voluntarily recalled by a combination of such entities.
[California Code of Regulations, Title 19, Division 1, §904.2(e)] Testing and Maintenance Requirements.
(e) At the time of testing and maintenance, or at any time parts are replaced, an itemized invoice showing work performed and parts replaced shall be provided by the licensee to the system owner. If testing and maintenance is performed more than thirty (30) days prior to the next required testing and maintenance date, the invoice shall bear a statement indicating the system was tested and maintained early.
[California Code of Regulations, Title 19, Division 1, §904.2(f)] Testing and Maintenance Requirements.
(f) The licensee shall offer to return all replaced parts to the system owner or owner’s representative, except those parts that are required to be returned to the manufacturer under conditions of warranty.
901.7.1 Impairment coordinator. The building owner shall assign an impairment coordinator to comply with the requirements of this section. In the absence of a specific designee, the owner shall be considered to be the impairment coordinator.
901.7.2 Tag required. A tag shall be used to indicate that a system, or portion thereof, has been removed from service.
901.7.3 Placement of tag. The tag shall be posted at each fire department connection, system control valve, fire alarm control unit, fire alarm annunciator and fire command center, indicating which system, or part thereof, has been removed from service. The fire code official shall specify where the tag is to be placed.
9-10 2025 CALIFORNIA FIRE CODE
on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.
FIRE PROTECTION AND LIFE SAFETY SYSTEMS
CRSC § 304.8 Medium relevance — show source text
5
14
13
13|22
21
20
19
18|46
44
42
41
39|84
80
76
73
71|132
126
120
116
111|274
262
251
241
232| |1600
1700
1800
1900
2000|1600
1700
1800
1900
2000|NA
NA
NA
NA
NA|NA
NA
NA
NA
NA|NA
NA
NA
NA
NA|13
12
12
11
11|18
17
17
16
16|38
37
36
35
34|68
66
64
62
60|108
104
101
98
95|224
217
210
204
199|For SI units: 1 inch = 25 mm, 1 foot = 304.8 mm, 1 cubic foot per hour = 0.0283 m [3] /h, 1 pound-force per square inch = 6.8947 kPa, 1 inch water column = 0.249 kPa
Notes : 1 Table entries are rounded to 3 significant digits. 2 NA means a flow of less than 10 ft 3 /h (0.283 m 3 /h). 3 Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.
304 2025 CALIFORNIA MECHANICAL CODE
), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.
FUEL GAS PIPING
Frequently asked questions
What exactly is “significant degradation” in one sentence?
“Significant degradation” means the product no longer retains at least 90 percent of its approved design characteristics (see § 12-11A.210 / § 12-11B.210) .
Does the CRSC require every product to last five years?
No — the 5‑year non‑degradation expectation in the retrieved text applies explicitly to Detectable Warning Products and Directional Surfaces in § 12-11A.209 / § 12-11B.209; the code excerpt does not state a universal 5‑year requirement for all products .
How is the 90% measured (test method)?
The definition in § 12-11A.210 / § 12-11B.210 sets the threshold but does not include measurement protocols; test methods and acceptance procedures are handled by referenced standards or independent entity evaluations elsewhere in the article .
If one attribute falls below 90% and others do not, is the product noncompliant?
The code text defines significant degradation in terms of the product maintaining at least 90% of its approved design characteristics; if a required characteristic falls below 90% that characteristic has degraded significantly under § 12-11A.210 / § 12-11B.210. How that translates to overall compliance (product removal, remediation, recertification) depends on the product program and evaluating authority (see independent entity provisions) .
Who decides compliance if the measurements are borderline?
The CRSC contemplates evaluation by an independent entity selected/recognized by the Division of the State Architect–Access Compliance to confirm performance and compliance (see § 12-11A.211 / § 12-11B.211) .
More in California Referenced Standards Code
- Administration and scope — CRSC Chapter 12 overview
- Air filter standards (Chapter 12‑71)
- Building and facility access / accessibility standards (Chapters 12‑11A, 12‑11B)
- Engineering regulations — quality and design of construction materials (12‑16 series)
- Exits and means of egress (Chapters 12‑10 series)
- Protective signaling systems and detectors (Chapters 12‑72‑1, ‑2, ‑3)
- Radiation shielding standards (Chapter 12‑31C)
- Referenced standards index / cross‑reference table (Part 12 listing of referenced standards)
- Releasing systems for security bars (egress-release standards)
- Standards for insulating materials (Chapter 12‑13)
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