Correspondence M1•
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September 22, 2005 c!'':nr xay
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CIW OF TIGARD
OREGON
Delta Fire Inc
Amy Morse
14795 SW 72 Ave
Portland, OR 97224
RE: FIRE SPRINKLER SYSTEM MODIFICATION — NORPAC
Project Information
Building Permit: BUP2005 -00451 Occupancy Type: B
Tenant Name: NorPack Construction Type: I -B
Address: 10200 SW Greenburg Rd Occupant Load: 162
Area: 32,460 Sq Ft Stories: 5th & 6 Floor
Hazard: Light
The plan review was performed under the State of Oregon Structural Specialty Code (OSSC)
2004 edition, Oregon Fire Code 2004 edition; and NFPA 13. The submitted plans are approved
subject to the following.
HYDROSTATIC TESTING
Hydrostatic testing of the system shall occur at sprinkler final. The contractor's
material and test certificate required by NFPA 13, 16.1 shall be completed and signed
by both the installer and building owner.
TESTING: - Section 16.2.1
1. Unless permitted by 16.2.1.2 through 16.2.1.6, all piping and attached appurtenances
subjected to system working pressure shall be hydrostatically tested at 200 psi (13.8 bar)
and shall maintain that pressure without loss for 2 hours. Loss shall be determined by a
drop in gauge pressure or visual leakage. The test pressure shall be read from a gauge
located at the low elevation point of the system or portion being tested.
16.2.1.4: Modifications affecting 20 or fewer sprinklers shall not require testing in excess
of system working pressure.
WATERFLOWALARMS: - Section 6.9.1
2. .Water flow alarm apparatus shall be listed for the service and so constructed and installed
that any flow of water from a sprinkler system equal to or greater than that from a single
automatic sprinkler of the smallest orifice size installed on the system will result in an
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
audible alarm on the premises within 5 minutes after such flow begins and until such
flow stops.
SPRINKLER SYSTEM MONITORING:. OSSC 901.6. - NFPA 72
3. All valves controlling the water supply for automatic sprinkler systems and water -flow
switches on all sprinkler systems shall be electrically monitored where the number of
sprinklers are less than 20
HANGERS:
4. The maximum distance between hangers shall not exceed that specified in Table 9 -2.2.
5. The maximum distance between hangers for listed nonmetallic pipe shall be modified as
specified in the individual product listings.
SWAY BRACING: - Section 9.3.5 - 9.3.5.8
6. The system piping shall be braced to resist both lateral and longitudinal horizontal
seismic loads and to prevent vertical motion resulting from seismic loads. The structural
components to which bracing is attached shall be determined to be capable of carrying
the added applied seismic loads. Sway braces shall be designed to withstand forces in
tension and compression. Bracing shall be attached directly to feed and cross mains.
SPARE SPRINKLERS: - Section 6.2.9
7. The stock of spare sprinklers shall include all types and ratings installed and shall be as
follows:
a. For systems having less than 300 sprinklers, not fewer than six sprinklers
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. 106.3.1 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.
Respe
Val Henze ,
Senior Plans Examiner