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Earlier editions: 20222019

Appendix BG — SOUND TRANSMISSION

BG104 Referenced Standards — 2025 California Residential Code

California Residential Code (Title 24, Part 2.5) · 2025 edition · updated 2026-10-19 · California

CBSC: official editions, supplements and errata

Italicized text is a California amendment to the model code, as printed in the official publication.

Cite as: 2025 California Residential Code (Title 24, Part 2.5) § BG104 · Effective January 1, 2026 · Official source: Building Standards Commission

BG104.1 General.

See Table BG104.1 for standards that are referenced in various sections of this appendix. Standards are listed by the standard identification with the effective date, the standard title, and the section or sections of this appendix that references the standard.

TABLE BG104.1—REFERENCED STANDARDS

STANDARD
ACRONYM
STANDARD NAME SECTIONS
HEREIN
REFERENCED
ASTM E90—09 Test Method for Laboratory Measurement of
Airborne Sound Transmission Loss of Building Partitions and Elements
BG102.1, BG102.1.1
ASTM E336—20 Standard Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings BG102.1
ASTM E492—09 Specification for Laboratory Measurement of
Impact Sound Transmission through Floor-ceiling Assemblies Using the Tapping Machine
BG103.1
ASTM E1007—21 Standard Test Method for Field Measurement of Tapping Machine
Impact Sound Transmission Through Floor-Ceiling Assemblies and Associated Support Structures
BG103.1
TMS 302—2018 Standard for Determining the Sound Transmission Class Rating for Masonry Assemblies BG102.1.1

APPENDIX BH – AUTOMATIC VEHICULAR GATES

(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 1 HCD 2 HCD 1/AC DSA AC DSA SS DSA SS/CC OSHPD 1 OSHPD 1R OSHPD 2 OSHPD 3 OSHPD 4 OSHPD 5 BSCC DPH AGR DWR CEC CA SL SLC
Adopt entire chapter
Adopt entire chapter as amended (amended sections listed below)
Adopt only those sections that are listed below
Chapter / Section
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