CRSC · California Referenced Standards Code

Where are chapter adoption and cross‑reference matrices for Chapter 31C?

If you’re designing X‑ray or radiation rooms, start at CBC Chapter 31C (matrix at the chapter top) to see which state agency applies, follow **§ 3102C** to the California Referenced Standards Code **§ 12‑31C‑101** for the actual shielding tables and calculations, and ask DPH for any variance — the matrices themselves are informational only.

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Last reviewed: July 6, 2026

What the code requires — plain English

All radiation shielding barriers called out in Chapter 31C must comply with the California Referenced Standards Code radiation standard § 12‑31C‑101; that requirement appears in § 3102C of the California Building Code (Chapter 31C). The Chapter 31C matrix adoption table in the CBC and the Part 12 cross‑reference table in the CRSC are the non‑regulatory tools that show which state agencies adopt or apply Chapter 31C and which referenced standard controls shielding design. See § 3102C and the Part 12 cross‑reference mapping for Chapter 12‑31C.

The single most important point: All shielding barriers required by § 3102C must meet § 12‑31C‑101 (the DPH radiation‑shielding standard); use the CBC Chapter 31C adoption matrix and the CRSC Part 12 cross‑reference table to confirm which agency and standard apply.

Requirements in detail

Where the matrices live (quick)

CBC — at the start of Chapter 31C there is a Matrix Adoption Table (nonregulatory) that indicates which state agencies adopt the chapter or specific sections; this is the place to check whether a particular agency has adopted the chapter for a given application.
CRSC — see PART 12 CROSS REFERENCE TABLE in the California Referenced Standards Code; it lists Chapter 12‑31C (Radiation Shielding Standards) and maps that standard to the Building Code section that references it.

Decision table — what to check and where

Decision dimension	Value / Where to look	Code reference
Which CBC chapter contains the adoption matrix for radiation rules?	Chapter 31C — Matrix Adoption Table at the top of the chapter (nonregulatory aid).	§ 3101C–§ 3104C (Chapter 31C matrix)
Which Building Code section requires referenced‑standard shielding?	Radiation shielding barriers must meet § 12‑31C‑101.	§ 3102C
Where is the referenced shielding standard published?	California Referenced Standards Code — Chapter 12‑31C (Radiation Shielding Standards).	§ 12‑31C‑101 (CRSC Part 12)
Which tool maps Part 12 standards to Title 24 sections?	PART 12 CROSS REFERENCE TABLE in the CRSC — shows Chapter 12‑31C → Part 2, § 3102C.	Part 12 Cross Reference Table (CRSC)
Are the matrices regulatory?	No — they are nonregulatory aids intended to show adoption/mapping only.	Matrix Adoption Table note (CBC / CRSC).

Quick interpretation guidance

The CBC matrix tells which state agency (for example, DPH) has adopted the chapter or sections for its jurisdictional applications; use it to know who enforces or grants variances.
The CRSC Part 12 cross‑reference ties the CRSC standard (12‑31C) back to the CBC section that requires compliance (§ 3102C), so you must consult the CRSC standard text for shielding calculations and criteria.

Exceptions & special cases

Variances/exceptions to the CRSC radiation shielding standard § 12‑31C‑101 may be granted only by the Department of Health Services (DPH) — this authority is stated in § 3102C. Always verify variance authority with DPH when a proposed shield departs from the standard.
The matrix tables are nonregulatory. Do not treat an adoption matrix entry as a text amendment; it is an aid indicating adoption/scope only. Final enforceable requirements are the code text and the referenced standard (CRSC).
The Office of the State Fire Marshal (SFM) sometimes marks sections with a special symbol indicating limited SFM adoption related to Section 1.11 — check the matrix legend and § 1.11 if SFM applicability is relevant.

Common mistakes

Looking only at the CBC text and assuming it contains the complete shielding criteria — incorrect. Shielding criteria are in § 12‑31C‑101 (CRSC); § 3102C points you there.
Treating the adoption matrix as mandatory code language — the matrix is an informational tool, not the enforceable standard. Always read the underlying § text and referenced CRSC standard.
Missing the agency check: assuming local building department enforces a CRSC Part 12 standard when another state agency (e.g., DPH) has jurisdiction; confirm agency adoption in the Chapter 31C matrix.

Worked example — applying the rule

Scenario: An outpatient clinic plans a therapeutic X‑ray room with equipment operating at 160 kVp.

Start in the CBC Chapter 31C: read § 3104C.3 for equipment operating above 150 kVp and confirm room/interlock requirements and control station placement. Then read § 3102C to confirm shielding must meet the referenced standard.
Consult the Chapter 31C Matrix Adoption Table to confirm which state agency has adopted Chapter 31C for this application (DPH is the promulgating agency for Chapter 31C). That tells you DPH has authority for variances and enforcement in its jurisdictional areas.
Open § 12‑31C‑101 in the CRSC (Chapter 12‑31C) and apply the shielding calculation method and barrier‑thickness tables provided there to size primary protective barrier and secondary protective barrier materials for 160 kVp exposures. The CRSC Part 12 Cross Reference Table shows Chapter 12‑31C maps to CBC § 3102C, confirming you are consulting the correct CRSC chapter.
If your planned barrier differs from the CRSC prescriptions, submit a variance request to DPH (only DPH may grant variances per § 3102C).

Concrete numeric note (from CBC text): when building designers identify “wall, floor and ceiling areas that can be struck by the useful beam,” § 3104C.1 requires these areas plus a border of 1 foot (305 mm) be provided with primary protective barriers — that dimensional threshold is in the CBC text and must be combined with CRSC shielding tables for final thickness.

Related provisions

§ 3101C — Scope (Chapter 31C definitions and scope).
§ 3102C — Radiation shielding barriers; requires compliance with § 12‑31C‑101 and notes variance authority.
§ 3103C — Medical radiographic and photofluorographic installations (operator station, observation window attenuation).
§ 3104C — Medical therapeutic X‑ray installations (primary barrier border of 1 foot / 305 mm, interlocks for equipment above 150 kVp, etc.).
§ 12‑31C‑101 — Radiation shielding standards text in the California Referenced Standards Code (Part 12, Chapter 12‑31C). Use this for the shielding calculations and criteria.

Code references

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

CRSC § 1.11. High relevance — show source text

CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 31C – RADIATION

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	Col17	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting agency	BSC	BSC- CG	SFM	1	2	1/AC	AC	SS	SS/CC	1	1R	2	3	4	5	6	6	6	6	6	6	6	6	6
Adopt entire chapter																		X
Adopt entire chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
Chapter / Section

The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

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31C [DPH] RADIATION

SECTION 3101C—SCOPE

For the purpose of this chapter, the following terms shall have the meaning indicated:

PRIMARY PROTECTIVE BARRIER is a barrier to attenuate the useful beam.

SECONDARY PROTECTIVE BARRIER is a barrier to attenuate stray radiation.

STRAY RADIATION is radiation not serving any useful purpose, which includes leakage and scattered radiation.

USEFUL BEAM is the radiation which passes through the window, aperture, cone or other collimating device of the tube housing.

SECTION 3102C—RADIATION SHIELDING BARRIERS

All radiation shielding barriers in rooms and enclosures housing machines shall meet the requirements of Section 12-31C-101, Chapter 12-31C, Part 12, California Referenced Standards Code. The Department of Health Services is the only agency that may grant a variance or exception to these standards.

SECTION 3103C—MEDICAL RADIOGRAPHIC AND PHOTOFLUOROGRAPHIC INSTALLATIONS

California Referenced Standards Code Medium relevance — show source text

(feet)|LATERAL
L
(feet)**|Min|Max|Max|Min|Max|Max|Min|Max|Max|Min|Max|Max|Min|Max|Max| |6|2
5|NA
NA|NA
NA|28
25|NA
NA|NA
NA|52
49|NA
NA|NA
NA|86
82|NA
NA|NA
NA|130
117|NA
NA|NA
NA|180
165| |8|2
5
8|NA
NA
NA|NA
NA
NA|29
26
24|NA
NA
NA|NA
NA
NA|55
52
48|NA
NA
NA|NA
NA
NA|93
88
83|NA
NA
NA|NA
NA
NA|145
134
127|NA
NA
NA|NA
NA
NA|198
183
175| |10|2
5
10|NA
NA
NA|NA
NA
NA|31
28
25|NA
NA
NA|NA
NA
NA|61
57
50|NA
NA
NA|NA
NA
NA|103
96
87|NA
NA
NA|NA
NA
NA|162
148
139|NA
NA
NA|NA
NA
NA|221
204
191| |15|2
5
10
15|NA
NA
NA
NA|NA
NA
NA
NA|35
35
28
NA|NA
NA
NA
NA|NA
NA
NA
NA|67
62
55
48|NA
NA
NA
NA|NA
NA
NA
NA|114
107
97
89|NA
NA
NA
NA|NA
NA
NA
NA|179
164
153
141|53
NA
NA
NA|475
NA
NA
NA|250
231
216
201| |20|2
5

CRSC § 31B-7 Medium relevance — show source text

Six-inch minimum radius at “pinch points”._|Note for Table 31B-7:
1. Six-inch minimum radius at “pinch points”.|Note for Table 31B-7:
1. Six-inch minimum radius at “pinch points”.|Note for Table 31B-7:
1. Six-inch minimum radius at “pinch points”.|Note for Table 31B-7:
1. Six-inch minimum radius at “pinch points”.|Note for Table 31B-7:
1. Six-inch minimum radius at “pinch points”.|Note for Table 31B-7:
1. Six-inch minimum radius at “pinch points”.|Note for Table 31B-7:
1. Six-inch minimum radius at “pinch points”.|

FIGURE 31B-8 — DEPTH MARKER LOCATIONS

FIGURE 31B-8 — DEPTH MARKER LOCATIONS

Notes

1. Maximum depth. 2. Minimum depth. 3. Each end of pool. 4. Both sides at the shallowest and deepest parts of pool. 5. At the break in the bottom slope between the shallow and deep end. 6. Along the perimeter of the pool at distances not to exceed 25 feet.

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CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 31C – RADIATION

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	Col17	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting agency	BSC	BSC- CG	SFM	1	2	1/AC	AC	SS	SS/CC	1	1R	2	3	4	5	6	6	6	6	6	6	6	6	6
Adopt entire chapter																		X
Adopt entire chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
Chapter / Section

CRSC § 9.2.2 Medium relevance — show source text
Entire Chapter||||||||||||||||||||||||| |Adopt Entire Chapter as
amended (amended sections
listed below)||||||||||||||||||||||||| |Adopt only those sections
that are listed below|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X|X| |Chapter/Section||||||||||||||||||||||||| |1.9.2.2 & 1.9.2.2.1|||||||||X|||||||||||||||| |1.10.1 and subsections||||||||||X|X|||||||||||||| |1.10.2 and subsections||||||||||||X||||||||||||| |1.10.3 and subsections|||||||||||||X|||||||||||| |1.10.4 and subsections||||||||||||||X||||||||||| |1.10.5 and subsections|||||||||||||||X|||||||||| |1.10.6 and subsections||||||||||||||||X||||||||| |1.11.0 through 1.11.11|||X|||||||||||||||||||||| |1.12.0|||||||||||||||||||||||X|| |1.13.0||||||||||||||||||||X||||| |1.14.0||||||||||||||||||||||||X| |Division II –
Scope and Administration||||||||||||||||||||||||| |101.0 – 104.1||||||||||X|X|X|X|X|X|||||||||| |104.2 (Items 1 – 5)||||X|X|||||||||||||||||||| |104.3 – 107.0||||||||||X|X|X|X|X|X|||||||||| |104.4.3.1|X||||||||||||||||||||||||

This state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

2 2025 CALIFORNIA MECHANICAL CODE

), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

CHAPTER 1

ADMINISTRATION

DIVISION I CALIFORNIA ADMINISTRATION

1.1.0 General.
CRSC § 1.10.4 Medium relevance — show source text
OSHPD 4 Office of Statewide Hospital Planning and Development (see Section 1.10.4)

OSHPD 5 Office of Statewide Hospital Planning and Development (see Section 1.10.5)

OSHPD 6 Office of Statewide Hospital Planning and Development (see Section 1.10.6)

DPH Department of Public Health (see Section 1.7)

AGR Department of Food and Agriculture (see Section 1.6)

CEC California Energy Commission (see Section 100 in Part 6, the California Energy Code)

CA Department of Consumer Affairs (see Section 1.4): Board of Barbering and Cosmetology Board of Examiners in Veterinary Medicine Board of Pharmacy Acupuncture Board Bureau of Household Goods & Services Structural Pest Control Board (SPCB)

SL State Library (see Section 1.12)

SLC State Lands Commission (see Section 1.14)

DWR Department of Water Resources (see Section 1.13 of Chapter 1 of the California Plumbing Code in Part 5 of Title 24)

The state agencies are available to answer questions about their adoptions. Contact information is provided on page iv of this code.

To learn more about the use of this code refer to pages viii and ix. Training materials on the application and use of this code are available at the website of the California Building Standards Commission www.dgs.ca.gov/bsc.

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California Matrix Adoption Tables

Format of the California Matrix Adoption Tables

The matrix adoption tables, examples of which follow, are nonregulatory aids intended to show the user which state agencies have adopted and/or amended given sections of the model code. An agency's statutory authority for certain occupancies or building applications determines which chapter or section may be adopted, repealed, amended or added. See Chapter 1, Division I, Sections 1.2 through 1.14 for agency authority, building applications and enforcement responsibilities.

The side headings identify the scope of state agencies’ adoption as follows:

Adopt the entire IFC chapter without state amendments.

If there is an “X” under a particular state agency’s acronym on this row, this means that particular state agency has adopted the entire model code chapter without any state amendments.

Example:

CALIFORNIA FIRE CODE-MATRIX ADOPTION TABLE

CHAPTER 2 – DEFINITIONS AND ABBREVIATION S (Matrix Adoption Tables are nonregulatory, intended only as an aid to the user. See Chapter 1 for state agency authority and building applications.)
CRSC § 0.500 Medium relevance — show source text
375**|0.500|0.625|0.750|0.875|1.125|1.375|1.625|2.125| |INSIDE:3|INSIDE:3|0.305|0.402|0.527|0.652|0.745|0.995|1.245|1.481|1.959| |LENGTH (feet)|LENGTH (feet)|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR| |10
20
30
40
50|10
20
30
40
50|27
18
15
13
11|55
38
30
26
23|111
77
61
53
47|195
134
107
92
82|276
190
152
131
116|590
406
326
279
247|1060
730
586
502
445|1680
1150
925
791
701|3490
2400
1930
1650
1460| |60
70
80
90
100|60
70
80
90
100|10
NA
NA
NA
NA|21
19
18
17
16|42
39
36
34
32|74
68
63
59
56|105
96
90
84<b
CRSC § 1.11. Medium relevance — show source text
The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

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31C [DPH] RADIATION

SECTION 3101C—SCOPE

For the purpose of this chapter, the following terms shall have the meaning indicated:

PRIMARY PROTECTIVE BARRIER is a barrier to attenuate the useful beam.

SECONDARY PROTECTIVE BARRIER is a barrier to attenuate stray radiation.

STRAY RADIATION is radiation not serving any useful purpose, which includes leakage and scattered radiation.

USEFUL BEAM is the radiation which passes through the window, aperture, cone or other collimating device of the tube housing.

SECTION 3102C—RADIATION SHIELDING BARRIERS

All radiation shielding barriers in rooms and enclosures housing machines shall meet the requirements of Section 12-31C-101, Chapter 12-31C, Part 12, California Referenced Standards Code. The Department of Health Services is the only agency that may grant a variance or exception to these standards.

SECTION 3103C—MEDICAL RADIOGRAPHIC AND PHOTOFLUOROGRAPHIC INSTALLATIONS

3103C.1 Operator station. The operator’s station at the control shall be behind a protective barrier either in a separate room, in a protected booth or behind a shield which will intercept the useful beam and any radiation which has been scattered only once.

3103C.2 Patient observation and communication. Provision shall be made for the operator to observe and communicate with the patient without leaving the shielded position at the control panel. When an observation window is used, it must provide radiation atten- uation equal to that required in the surrounding barrier.

SECTION 3104C—MEDICAL THERAPEUTIC X-RAY INSTALLATIONS

3104C.1 General. All wall, floor and ceiling areas that can be struck by the useful beam, plus a border of 1 foot (305 mm), shall be provided with primary protective barriers.

3104C.2 Equipment operating above 50 kVp. Equipment operating above 50 kVp shall conform with the following: 1. The control station shielding shall either be an integral part of the building or anchored to the building. 2. The control station shall be provided with a window having radiation attenuation equal to that required by the adjacent barrier, or a mirror system, or a closed-circuit television viewing screen. The patient area must be visible to the operator with- out having to leave the protected area during exposure.
CRSC § 9.7 Medium relevance — show source text
3|9.7|9.3|8.7|8.3|8.3| |TABLE R301.2.1(1)—COMPONENT AND CLADDING LOADS FOR A BUILDING
WITH A MEAN ROOF HEIGHT OF 30 FEET LOCATED IN EXPOSURE B (ASD) (psf)a, b, c, d, e, f, g—continued|** ULTIMATE DESIGN WIND SPEED,Vult|** 90.0|** Neg**|-16.2|-13.9|-11.0|-8.7|-12.4|-10.7|-8.3|-6.5|-14.7|-12.4|-9.5|-7.3|-19.1|-16.0|-11.9|-8.7|-9.5|-9.1|-8.6|-8.2|-11.7|-10.9|-9.9|-9.1|-9.1| |TABLE R301.2.1(1)—COMPONENT AND CLADDING LOADS FOR A BUILDING
WITH A MEAN ROOF HEIGHT OF 30 FEET LOCATED IN EXPOSURE B (ASD) (psf)a, b, c, d, e, f, g—continued|** ULTIMATE DESIGN WIND SPEED,Vult|** 90.0|** Pos**|6.5|5.6|4.4|3.6|6.5|5.4|4.4|3.6|6.5|5.6|4.4|3.6|6.5|5.6|4.4|3.6|8.7|8.3|7.8|7.4|8.7|8.3|7.8|7.4|7.4| |TABLE R301.2.1(1)—COMPONENT AND CLADDING LOADS FOR A BUILDING
WITH A MEAN ROOF HEIGHT OF 30 FEET LOCATED IN EXPOSURE B (ASD) (psf)a, b, c, d, e, f, g—continued|** EFFECTIVE**
WIND
AREAS
(square
feet)|** EFFECTIVE**
WIND
AREAS
(square
feet)|** EFFECTIVE**
WIND
AREAS
(square
feet)|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100|100| |TABLE R301.2.1(1)—COMPONENT AND CLADDING LOADS FOR A BUILDING
WITH A MEAN ROOF HEIGHT OF 30 FEET LOCATED IN EXPOSURE B (ASD) (psf)a, b, c, d, e, f, g—continued|** ZONE**|** ZONE**|** ZONE**|3|3|3|3|1|1|1|1|2|2|2|2|3|3|3|3|4|4|4|4|5|5|5|5|5| |**TABLE R301.2.
CRSC § 90.0 Medium relevance — show source text
b, c, d, e, f, g—continued**|** ULTIMATE DESIGN WIND SPEED,Vult|** 90.0|** Neg**|-15.3|-11.7|-14.7|-12.4|-9.5|-7.3|-16.2|-14.4|-12.2|-10.5|-19.9|-17.3|-13.9|-11.3|-14.7|-13.0|-10.7|-9.0|-19.1|-17.2|-14.7|-12.8|-20.6|-18.5|-15.8|-13.8|-11.7|-10.4|-8.6|-7.3|-16.2|-13.9|-11.0|-8.7| |TABLE R301.2.1(1)—COMPONENT AND CLADDING LOADS FOR A BUILDING
WITH A MEAN ROOF HEIGHT OF 30 FEET LOCATED IN EXPOSURE B (ASD) (psf)a, b, c, d, e, f, g—continued|** ULTIMATE DESIGN WIND SPEED,Vult|** 90.0|** Pos**|4.6|4.1|8.0|7.3|6.4|5.7|8.0|7.3|6.4|5.7|8.0|7.3|6.4|5.7|6.5|5.6|4.4|3.6|6.5|5.6|4.4|3.6|6.5|5.6|4.4|3.6|6.5|5.6|4.4|3.6|6.5|5.6|4.4|3.6| |TABLE R301.2.1(1)—COMPONENT AND CLADDING LOADS FOR A BUILDING
WITH A MEAN ROOF HEIGHT OF 30 FEET LOCATED IN EXPOSURE B (ASD) (psf)a, b, c, d, e, f, g—continued|** EFFECTIVE**
WIND
AREAS
(square
feet)|** EFFECTIVE**
WIND
AREAS
(square
feet)|** EFFECTIVE**
WIND
AREAS
(square
feet)|50|100|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100|10|20|50|100| |TABLE R301.2.1(1)—COMPONENT AND CLADDING LOADS FOR A BUILDING
**WITH A MEAN ROOF HEIGHT OF 30 FEET LOCATED IN EXPOSURE B (ASD) (psf)a, b, c, d, e, f,

CRSC § 3104C.4 Medium relevance — show source text

3104C.4 A minimum of one door shall be provided with an auxiliary means for being opened in case of power failure or mechanical breakdown, where large power-driven doors offer the only access to the room.

3104C.5 A flashing red warning signal light energized only when the useful beam is on shall be located adjacent to the entrance(s) to a therapy room with equipment capable of operating above 500 kVp.

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CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 31D – FOOD ESTABLISHMENTS

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	Col17	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting agency	BSC	BSC- CG	SFM	1	2	1/AC	AC	SS	SS/CC	1	1R	2	3	4	5	6	6	6	6	6	6	6	6	6
Adopt entire chapter								X	X									X
Adopt entire chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
Chapter / Section

The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

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31D [DPH] FOOD ESTABLISHMENTS

SECTION 3101D—SCOPE

The provisions of this chapter shall apply to the construction of commissaries serving mobile food preparation units.

SECTION 3102D—DEFINITION

For the purpose of this chapter, the following term shall have the meaning indicated:

CRSC § 903.2.1 Medium relevance — show source text
[F] 903.2.1 Group A. An automatic sprinkler system shall be provided throughout buildings and portions thereof used as Group A occupancies as provided in this section.

[F] 903.2.1.1 Group A-1. An automatic sprinkler system shall be provided throughout stories containing Group A-1 occupancies and throughout all stories from the Group A-1 occupancy to and including the levels of exit discharge serving that occupancy where one of the following conditions exists:
1. The fire area exceeds 12,000 square feet (1115 m [2] ).
2. The fire area has an occupant load of 300 or more.
3. The fire area is located on a floor other than a level of exit discharge serving such occupancies.
4. The fire area contains a multitheater complex.
[F] 903.2.1.2 Group A-2. An automatic sprinkler system shall be provided throughout stories containing Group A-2 occupancies and throughout all stories from the Group A-2 occupancy to and including the levels of exit discharge serving that occupancy where one of the following conditions exists:
1. The fire area exceeds 5,000 square feet (464 m [2] ).
2. The fire area has an occupant load of 100 or more.
3. The fire area is located on a floor other than a level of exit discharge serving such occupancies. 4. The structure exceeds 5,000 square feet (465 m [2] ), contains more than one fire area containing a Group A-2 occupancy, and is separated into two or more buildings by fire walls of not less than 4-hour fire-resistance rating without openings.
[F] 903.2.1.3 Group A-3. An automatic sprinkler system shall be provided throughout stories containing Group A-3 occupancies and throughout all stories from the Group A-3 occupancy to and including the levels of exit discharge serving that occupancy where one of the following conditions exists:
1. The fire area exceeds 12,000 square feet (1115 m [2] ).
2. The fire area has an occupant load of 300 or more.
3. The fire area is located on a floor other than a level of exit discharge serving such occupancies. 4. The structure exceeds 12,000 square feet (1155 m [2] ), contains more than one fire area containing exhibition and display rooms, and is separated into two or more buildings by fire walls of not less than 4-hour fire-resistance rating without openings.
[F] 903.2.1.4 Group A-4. An automatic sprinkler system shall be provided throughout stories containing Group A-4 occupancies and throughout all stories from the Group A-4 occupancy to and including the levels of exit discharge serving that occupancy where one of the following conditions exists:
1. The fire area exceeds 12,000 square feet (1115 m [2] ).
2. The fire area has an occupant load of 300 or more.
3. The fire area is located on a floor other than a level of exit discharge serving such occupancies.
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FIRE PROTECTION AND LIFE SAFETY SYSTEMS

[F] 903.2.1.5 Group A-5. An automatic sprinkler system shall be provided for all enclosed Group A-5 accessory use areas in excess of 1,000 square feet (93 m [2] ).
CRSC § 3103C.1 Medium relevance — show source text
SECTION 3103C—MEDICAL RADIOGRAPHIC AND PHOTOFLUOROGRAPHIC INSTALLATIONS

3103C.1 Operator station. The operator’s station at the control shall be behind a protective barrier either in a separate room, in a protected booth or behind a shield which will intercept the useful beam and any radiation which has been scattered only once.

3103C.2 Patient observation and communication. Provision shall be made for the operator to observe and communicate with the patient without leaving the shielded position at the control panel. When an observation window is used, it must provide radiation atten- uation equal to that required in the surrounding barrier.

SECTION 3104C—MEDICAL THERAPEUTIC X-RAY INSTALLATIONS

3104C.1 General. All wall, floor and ceiling areas that can be struck by the useful beam, plus a border of 1 foot (305 mm), shall be provided with primary protective barriers.

3104C.2 Equipment operating above 50 kVp. Equipment operating above 50 kVp shall conform with the following: 1. The control station shielding shall either be an integral part of the building or anchored to the building. 2. The control station shall be provided with a window having radiation attenuation equal to that required by the adjacent barrier, or a mirror system, or a closed-circuit television viewing screen. The patient area must be visible to the operator with- out having to leave the protected area during exposure.

3104C.3 Equipment operating above 150 kVp. Equipment operating above 150 kVp shall conform to the following: 1. The treatment room shall be provided with interlocks so that when any door of the treatment room is opened, either the machine will shut off automatically or the radiation level within the room will be reduced to an average of not more than 2 milliroentgens per hour and a maximum of 10 milliroentgens per hour at a distance of one meter in any direction from the target. After such shutoff or reduction in output, it shall be possible to restore the machine to full operation only from the control panel. 2. The control station shall be within a protective booth or in an adjacent room.

3104C.4 A minimum of one door shall be provided with an auxiliary means for being opened in case of power failure or mechanical breakdown, where large power-driven doors offer the only access to the room.

3104C.5 A flashing red warning signal light energized only when the useful beam is on shall be located adjacent to the entrance(s) to a therapy room with equipment capable of operating above 500 kVp.

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31C-4 2025 CALIFORNIA BUILDING CODE

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CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 31D – FOOD ESTABLISHMENTS

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)
CRSC § 2202.4.2 Medium relevance — show source text
2202.4.2 Modifications to AISC 358 Chapter 11 Welded Moment Connection. The welded sideplate steel moment connection shall be permitted, provided: 1. The beams shall consist of either rolled or built-up wide flange sections. 2. The biaxial dual-strong axis and column minor axis configurations of the moment connection shall be considered as an alternative system. 3. For SMF and IMF systems, U-shaped cover plates shall be used and the hinge-to-hinge span to beam depth, L h /d, shall be greater than or equal to 5. 4. The width-to-thickness ratios for beam flanges shall not be less than 3. 5. The spacing for lateral bracing of wide flange beams, L b , shall include the length of the side plate at beam ends. 6. The extension of the side plates beyond the face of the column shall be within the range of 0.77d to 1.0d. 7. The gap-to-side plate thickness ratio shall range from 2.1 to 2.3. Exception: The gap-to-side plate thickness ratio shall be permitted to be modified for moment connections with unequal beam sizes on opposite sides of the column or when orthogonal beams acting as drag connections frame into the side plate. 8. Demand critical fillet welds {2}, {5}, {5a} and {7} shall have Magnetic Particle Testing (MT) in accordance with AWS D1.1 for procedure, technique and acceptance. Inspect the beginning and end of these welds for a 6-inch length, plus any location along the length of the weld where a start and restart is visually noted for a distance of 6 inches on either side of the start/stop location.

2202.4.3 Modifications to AISC 358 Chapter 11 Bolted Moment Connection The bolted sideplate steel moment connection shall be permitted, provided: 1. The beams shall consist of either rolled or built-up wide flange sections. Columns shall consist of rolled or built-up wide flange sections or noncomposite built-up box or HSS with a minimum wall thickness of [3] / 4 inch (19 mm), or satisfy the requirements of width-to-thickness ratios of highly ductile members in AISC 341-16. 2. The biaxial dual-strong axis and column minor axis configurations of the moment connection shall be considered as an alternative system. 3. For SMF and IMF systems, on the sideplate standard or configuration A the U-shaped cover plates shall be used with the k dimension extension. The k dimension extension length is defined as beam depth d b /6, rounded to the nearest [1] / 2 inch (12.7 mm).
CRSC § 102.4 Medium relevance — show source text
through 3108 and 3110). Unique types of buildings, such as membrane structures, greenhouses, relocatable buildings and intermodal shipping containers (Sections 3102, 3112, 3113 and 3114) are also addressed in this chapter.

Chapter 31A Systems for Window Cleaning or Exterior Building Maintenance.

See Title 8, California Code of Regulations, Division 1, Chapter 4, Subchapter 7, General Industry Safety Orders, Group 1, Articles 5 and 6.

Chapter 31B Public Pools.

Chapter 31B is promulgated by the California Department of Public Health and provides the requirements for the construction, installa- tion, renovation, alteration, addition, relocation, replacement, or use of any public pool and to its ancillary facilities, mechanical equipment and related piping. Public pools include those located in or designated as the following: commercial building, hotel, motel, resort, recreational vehicle or mobile home park, campground, apartment house, condominium, townhouse, homeowner association, club, community building or area, public or private school, health club or establishment, water park, swim school, medical facility, bed and breakfast, licensed day-care facility, recreation and park district, and municipal pools.

Chapter 31C Radiation.

Chapter 31C is promulgated by the California Department of Public Health and focuses on radiation safety standards for buildings and equipment.

Chapter 31D Food Establishments.

Chapter 31D is promulgated by the California Department of Public Health. The provisions of this chapter apply to the construction of commissaries serving mobile food preparation units.

Chapter 31E Reserved.

Chapter 31F Marine Oil Terminals.

Chapter 31F is promulgated by the California State Lands Commission (SLC) and establishes minimum engineering, inspection and maintenance criteria for marine oil terminals (MOTs) in order to prevent oil spills and to protect public health, safety and the environ- ment. The provisions of this chapter regulate onshore and offshore MOTs, including marine terminals that transfer liquefied natural gas (LNG) and are applicable to the evaluation of existing MOTs and design of new MOTs in California. The Marine Environmental Protection Division administers this chapter on behalf of the SLC.

Chapter 32 Encroachments into the Public Right-of-Way.

Buildings and structures may be designed to extend over a property line and into the public right-of-way. Local regulations outside of the building code usually set limits to such encroachments, and such regulations take precedence over the provisions of this chapter. Chapter 32 establishes parameters for such encroachments, not only at grade but also above and below grade. Pedestrian walkways must also comply with Chapter 31.

Chapter 33 Safeguards During Construction.

Chapter 33 provides safety requirements for the job site during construction and demolition of buildings and structures. In addition, it provides requirements intended to protect the public from injury and adjoining property from damage.

Chapter 34 Reserved.

Chapter 35 Referenced Standards.

Chapter 35 lists all of the product and installation standards and codes that are referenced throughout Chapters 1 through 33 and includes identification of the promulgators and the section numbers in which the standards and codes are referenced. As stated in Section 102.4, these standards and codes become an enforceable part of the code (to the prescribed extent of the reference) as if printed in the body of the code.

Appendix A Employee Qualifications.

CRSC § 93.3 Medium relevance — show source text

A-93.3

Publication Date: 10/20/2021 Effective Date: 01/01/2022 Rev. 9c

Purpose and Scope

This gas design standard (GDS) provides specifications and design information for selecting and installing polyethylene (PE) and steel excess flow valves (EFVs).

1 General Information

1.1. EFVs are manufactured in accordance with American Society for Testing and Materials (ASTM International) F2138, “Standard Specification for Excess Flow Valves for Natural Gas Service,” and ASTM F1802, “Standard Test Method for Performance Testing of Excess Flow Valves.”

1.2. Only personnel qualified as described in GDS D-34, “Qualifications for Joining Polyethylene Pipe,” may install a plastic EFV.

1.3. Only personnel qualified as described in applicable welding procedures may install a steel EFV.

1.4. See Appendix C for an EFV installation and replacement matrix.

1.5. Exceptions to the guidelines listed in this GDS may be granted by Standards Engineering.

2 Applications for EFVs

2.1. Table 1 describes when EFVs must be installed on new, replaced, repaired, altered, and transferred service lines, except as noted in Step 2.2.

A. In certain scenarios an EFV is required only when there is a new complete service line or new stub service. This does not include repairs, alterations, replacements, or stub completions. It is recommended to install an EFV on existing or replaced services or stub completions, where practical (e.g., installing an EFV would not require upsizing the existing service).

Table 1. Required EFV Scenarios

Service Type	Total Connected Load in Standard Cubic Feet per Hour (scfh)	Col3
Service Type	0–1400	1401–5000
Single or branched service to single-family residence(s)1	EFV required	EFV required
Single or branched service to multifamily building(s)1	EFV required	EFV required for new service line2
Branched service to single-family residence and multifamily building1	EFV required	EFV required for new service line2
Single service to single commercial meter	EFV required	EFV required for new service line2
Any other service line (single or branched)	EFV required for new service line2	EFV required for new service line2

Step 6.2, “Branched Service Lines” describes appropriate EFV locations on branches.
Step 2.1.A provides an explanation on what is a new service line.

Printed copies of this document might be out of date. The Technical Information Library (TIL) has the current version.

PG&E Internal Information “PG&E” refers to Pacific Gas and Electric Company, a subsidiary of PG&E Corporation.

©2021 Pacific Gas and Electric Company. All rights reserved.

Page 1 of 19

Excess Flow Valves A-93.3

Publication Date: 10/20/2021 Effective Date: 01/01/2022 Rev. 9c

2.2. An EFV is not required in the following situations:

CRSC § 12.2 Medium relevance — show source text

[12.2] American Petroleum Institute (API), 2001 (Reaffirmed 2007), API Recommended Practice 14C (API RP 14C), “Recommended Practice for Analysis, Design, Installation, and Testing of Basic Surface Safety Systems for Offshore Production Platforms,” 7th ed., Washington, D.C.

[12.3] National Fire Protection Association (NFPA), 2012, NFPA 59A, “Standard for the Production, Storage, and Handling of Lique- fied Natural Gas (LNG),” 2013 ed., Quincy, MA.

[12.4] American Society of Mechanical Engineers (ASME), 2015, ASME B31.3-2014 (ASME B31.3), “Process Piping,” New York.

[12.5] American Society of Mechanical Engineers (ASME), 2013, ASME B31.5-2013 (ASME B31.5), “Refrigeration Piping and Heat Transfer Components,” New York.

Authority: Sections 8750 through 8760, Public Resources Code.

Reference: Sections 8750, 8751, 8755 and 8757, Public Resources Code.

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CALIFORNIA BUILDING CODE – MATRIX ADOPTION TABLE

CHAPTER 32 – ENCROACHMENTS INTO THE PUBLIC RIGHT-OF-WAY

(Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

Adopting agency	BSC	BSC- CG	SFM	HCD	Col6	Col7	DSA	Col9	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	Col17	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
Adopting agency	BSC	BSC- CG	SFM	1	2	1/AC	AC	SS	SS/CC	1	1R	2	3	4	5	6	6	6	6	6	6	6	6	6
Adopt entire chapter	X		X	X	X			X	X	X				X										X
Adopt entire chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
Chapter / Section

The state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.

Frequently asked questions

Where exactly in the CBC is the adoption matrix for Chapter 31C?

At the top of Chapter 31C you will find the Matrix Adoption Table (a nonregulatory aid that shows which state agencies adopt the chapter or sections). See Chapter 31C matrix in the CBC.

How do I find the actual shielding tables/calculations?

The CBC § 3102C directs you to § 12‑31C‑101 in the California Referenced Standards Code (Part 12, Chapter 12‑31C) for the shielding criteria and calculations. Consult Chapter 12‑31C in the CRSC.

Are the matrices legally enforceable?

No — the matrix adoption tables and Part 12 cross‑reference table are nonregulatory aids to help users find who adopted what and which standards map to which code sections. The enforceable text is the CBC sections and the CRSC standard text.

Who can grant a variance from the CRSC radiation shielding standard?

The Department of Health Services (DPH) is the only agency authorized to grant a variance or exception to the Chapter 12‑31C standards as stated in § 3102C.

I found an “X” in the matrix — what does that mean?

An “X” in the CBC Chapter adoption matrix indicates that the listed state agency has adopted the chapter (or section) as shown; check the matrix legend and the underlying code/standard for exact scope and enforcement.

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