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Technical Bulletins

Technical Bulletins clarify the application and interpretation of code requirements, policies or procedures. 

PDF icon 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


PDF icon 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


PDF icon Design and Testing Requirements for Emergency Responder Radio Coverage

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 March 2017


PDF icon 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


PDF icon 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 July 2015


PDF icon 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


PDF icon 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


PDF icon 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 June 2017


PDF icon Fire Alarm Wiring

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 January 2015


PDF icon Fire Department Connections

TECHNICAL BULLETIN FIRE-9-7

The purpose of this Technical Bulletin is to establish the requirements for Fire Department Connections (FDCs) for standpipe and sprinkler systems in non-high-rise buildings. In addition to the requirements contained in this bulletin, FDCs shall comply with the California Fire Code (CFC), NFPA 13, NFPA 13R, NFPA 14 and NFPA 24. For high-rise building, see Technical Bulletin FIRE 9-1, Sprinklers, Standpipes, Fire Pumps and Secondary Water Supply for High-Rises.

Revised January 2019


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