Correspondence March 6, 2006
Wyatt Fire Protection, Inc.
9095 SW Burnham
Tigard, OR 97223
RE: FIRE SPRINKLER SYSTEM
Project Information
Building Permit: BUP2006 -00098 Construction Type: II -B
Tenant Name: Sony Style Occupancy Type: M
Address: 9581 SW Washington Square Road Occupant Load: NA
Hazard: Ordinary
The plan review was performed under the State of Oregon Structural Specialty Code (OSSC)
2004 edition; National Fire Protection Association, Standard 13 (NFPA 13)2002 edition and the
State of Oregon Fire Code (OFC) 2004 edition. The submitted plans are approved subject to the
following.
FLUSHING
The fire service mains shall be completely flushed before connection is made to the sprinkler
piping. The flow rate shall not be less than the hydraulically calculated water demand of the
system including any hose requirements. Section 10.10.2.1 NFPA 13.
HYDROSTATIC TESTING
All piping and attached appurtenances shall be hydrostatically tested at 200 psi and shall
maintain that pressure without loss for 2 hours. The test pressure shall be read from a gauge
located at the low elevation point of the system or portion being tested. Section10.10.2.2.1 &
Section 10.10.2.2.3 NFPA 13.
GENERAL
1. A key box shall be installed in a location approved by the Fire Chief. The key box shall
be of an approved type and shall contain keys to gain necessary access as required by the
fire code official. Section 506.1 OFC. Please contact Tualatin Valley Fire & Rescue for
key box information at 503 - 612 -7010
2. A supply of spare sprinklers (never less than 6) shall be maintained on the premises so
that any sprinklers that have operated or been damaged in any way can be promptly
replaced. These sprinklers shall correspond to the types and temperature ratings of the
sprinklers on the property. Sections 6.2.9.1 & 6.2.9.2 NFPA 13.
3. The spare sprinklers shall be kept in a cabinet located where temperatures will not
exceed 100 degrees "F" at any time. A special sprinkler wrench shall be provided and
kept in the sprinkler cabinet to be used in the removal and installation of sprinklers.
Sections 6.2.9.3 & 6.2.9.6 NFPA 13.
4. The clearance between the deflector and the top of storage shall be 18 inches or greater.
Section 8.6.6.1 NFPA 13. The distance shall be increased to 36 inches for Large Drop
sprinkler heads. Section 8.11.6 NFPA 13
5. Sprinklers shall be located a minimum of 4 inches from walls and spaced not less than 6
feet on center. Sections 8.6.3.3 & 8.6.3.4.1 NFPA 13.
6. Clearances shall be provided around all piping extending through platforms,
foundations, walls and floors. The diameter of the hole shall be 2 inches larger than the
penetrating pipe for pipe sizes 1 inch through 3 '/z inches. The diameter of the hole shall
be 4 inches larger than the penetrating pipe for pipe sizes 4 inches and larger. Sections
9.3.4.1 & 9.3.4.2 NFPA 13.
7. All valves controlling the water supply for automatic sprinkler systems and all water flow
monitoring devices shall be electrically monitored when the system serves more than 20
heads. Section 903.4 OFC
8. An approved audible sprinlder flow alarm shall be provided on the exterior of the
building in an approved location. Such sprinkler water -flow devices shall be activated by
water flow equivalent to the flow of a single sprinkler of the smallest orifice size installed
in the system. Section 903.4.2 OFC
Approved Plans: 1 set of approved plans, bearing the City of Tigard approval stamp, shall be
maintained on the jobsite. The plans shall be available to the Building Division inspectors
throughout all phases of construction. 106.4.2 OSSC
When submitting revised drawings or additional information, please attach a copy of the
enclosed City of Tigard, Letter of Transmittal. The letter of transmittal assists the City of
Tigard in tracking and processing the documents.
Respectfully,
Brian Blalock,
Senior Plans Examiner