4.27 Listed Flexible Sprinkler Hose Fittings

Reference: NFPA 13, 2007 edition, 9.2.1.3.3

Purpose: To establish requirements for the use of listed flexible sprinkler hose fittings/assemblies and its anchoring components, intended for use in installations connecting the sprinkler piping to sprinkler, that are not specifically addressed in the currently adopted NFPA 13.

NOTE: THE ADDITION, REMOVAL, OR RELOCATION OF ANY FIRE SPRINKLER OR SYSTEM COMPONENTS REQUIRES A BUILDING PERMIT.

The use of flexible sprinkler hose fittings are allowed as long as the assembly components are listed and installed in accordance with the requirements of the listing, including the manufaturer's installation instructions. Additionally, flexible fittings used in San Francisco shall be listed by the California State Fire Marshal.

Compliance with sections 9.2.1.3.3.2 and 9.2.1.3.3.3 of the 2007 edition of NFPA 13 are required:

9.2.1.3.3.2 When installed and supported by suspended ceilings, the ceiling shall meet ASTM C 635, Standard Specification for the Manufacture, Performance, and Testing of Metal Suspension Systems for Acoustical Tile and Lay-In Panel Ceilings, and shall be installed in accordance with ASTM C 636, Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels.

9.2.1.3.3.3 Where flexible sprinkler hose fittings exceed 6 ft. in length and are supported by a suspended ceiling, a hanger(s) attached to the structure shall be required to ensure that the maximum unsupported length does not exceed 6 ft.

The suspended ceiling anchoring components shall be attached to the ceiling support with tamper resistant self-tapping zip screws.

SPECIAL REQUIREMENTS:

1. SUBMITTED PLANS UTILIZING LISTED FLEXIBLE SPRINKLER HOSE FITTINGS INSTALLED AND SUPPORTED BY SUSPENDED CEILINGS SHALL INCLUDE A STAMPED AND SIGNED LETTER FROM A LICENSED STRUCTURAL ENGINEER, STATING:

A. THAT THE SPECIFIED CEILING MEETS ASTM C 635 AND C 636

2. AFTER INSTALLATION AND PRIOR TO FINAL INSPECTION, A SPECIAL INSPECTION REPORT SHALL BE SUBMITTED TO THE DEPARTMENT OF BUILDING INSPECTION IN ACCORDANCE WITH THE 2007CALIFORNIA BUILDING CODE SECTION 1704 TO ENSURE THAT THE SUSPENDED CEILING COMPLIES WITH ASTM C 635 AND ASTM C 636. A COURTESY COPY OF THIS REPORT SHALL BE PROVIDED TO THE DISTRICT FIRE INSPECTOR PRIOR TO SIGN-OFF OF THE SYSTEM.