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Technical Bulletins
Technical Bulletins clarify the application and interpretation of code requirements, policies or procedures.
Approval of Building Product Listing and Evaluation Agencies
TECHNICAL BULLETIN BLDG-17-5
The purpose of this technical bulletin is to outline the criteria for acceptance of products, materials, assemblies, and equipment specified for construction of buildings, as well as to outline criteria for recognizing listing agencies.
Revised January 2019
Combustible Water-Resistive Barriers In Exterior Walls of Type III Construction
TECHNICAL BULLETIN BLDG-14-1
The purpose for this Technical Bulletin establishes acceptable materials to be used as water resistive barriers in exterior walls in buildings of Type III construction and more than 40 ft in height.
Revised December 2018
Design and Testing Requirements for Smoke Control Systems
TECHNICAL BULLETIN BLDG-9-1
The purpose of this Technical Bulletin is to provide the smoke control guidelines and requirements to the building permit applicant. This bulletin also describes the minimum requirements for smoke control design and special inspection.
Revised March 2014
Design of Sprinkler Systems in Shell Buildings
TECHNICAL BULLETIN FIRE-9-5
The purpose of this Technical Bulletin is to provide the design criteria and requirements to the applicant for providing sprinkler systems in shell buildings without a specific tenant and/or use.
Revised January 2020
Determination of Building Height in the Coastal Height Limitation Overlay Zone
TECHNICAL BULLETIN BLDG-5-4
The purpose of this Technical Bulletin is to illustrate how building height is determined for buildings and structures located in the Coastal Height Limitation Overlay Zone (also referred to as Proposition). Costal height limitation overlay zone shall be referred to a costal zone herein after.
Revised August 2013
Duties of Registered Special Inspector
TECHNICAL BULLETIN BLDG-17-2
This bulletin establishes the duties and responsibilities of registered special inspectors and approved material testing laboratories and special inspection agencies.
Revised August 2019
Emergency Responder Radio Coverage Systems
TECHNICAL BULLETIN FIRE-5-1
The purpose of this Technical Bulletin is to provide the guidelines and requirements to the building permit applicant for compliance with the requirements in Section 510 of the 2013 California Fire Code (CFC), Section 510 and Section 915 of the California Building Code (CBC) for emergency responder radio coverage.
Revised September 2021
Exhaust System for Residential Occupancies of Non-Rated Construction
TECHNICAL BULLETIN RESD-3-2
The purpose of this Technical Bulletin is to clarify the installation requirements of environmental air ducts in residential occupancies designed per the California Residential Code (CRC) and of non-rated construction.
Revised July 2020
Fire Alarm Systems Required in Existing Group R-1 and R-2 Occupancies
TECHNICAL BULLETIN FIRE-9-9
The purpose of this Technical Bulletin is to provide guidance in meeting the fire alarm system requirements of the California Fire Code (CFC) Section 1113 for existing Group R-1 and Group R-2 occupancies.
Revised November 2020
TECHNICAL BULLETIN FIRE-9-4
The purpose of this Technical Bulletin is to provide fire alarm system wiring guidelines and requirements to the permit applicant. In addition to the information provided in this Technical Bulletin, the permit applicant shall follow definitions, guidelines and requirements from adopted codes and standards.
Revised June 2020