Correspondence May 8, 2006 _ `" _ _
CITY OF TIGARD
OREGON
Wyatt Fire Protection, INC
Eugene Lathan
9095 SW Burnham
Tigard, OR 97223
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RE: FIRE SPRINKLER SYSTEM MODIFICATION - REVIEW
Project Information
Building Permit BUP2006-00136 Construction Type: II -B
Tenant Name: Yankee Candle Occupancy Type: M
Address: 9610 SW Washington Sq Occupant Load: 53
Area: 1,862 sq ft Stories: 1
Hazard: Ordinary Group II
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.
162.1.4: Modifications affecting 20 or fewer sprinklers shall not require testing in excess of system
working pressure.
WATERFLOWAL4RMS: - 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
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13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
automatic sprinkler of the smallest orifice size installed on the system will result in an audible
alarm on the premises within 5 minutes after such flow begins and until such flow stops.
SPRINKLER SYSTEM MONITORING: OSSC 901.6. - NFPA 13 sec 8.16
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 more 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 •. = tl�
(If I
Val enzel,
Senior Plans Examiner