Correspondence 9757 . Imo( ►�
February 23, 2007
Wyatt Fire Protection
9095 SW Burnham
Tigard, OR 97223
RE: FIRE SPRINKLER SYSTEM - REVIEW
Project Information
Permit: BUP 2007 -00058 Construction Type: II -B
Address: 9585 SW Washington Sq. Occupancy Type: M
The plan review was performed under the State of Oregon Structural Specialty Code (OSSQ 2004 edition,
Oregon Fire Code 2004 edition; and NFPA 13. The submitted plans are approved subject to the following.
HANGERS: NFPA sec. 9.2
1). The maximum distance between hangers shall not exceed that specified in Table 9 -2.2.
The unsupported length between the end sprinkler and the last hanger on the line shall not be greater
than 36 inches for 1" pipe, 48inches for 1 1/4" pipe and 60 inches for 1'h" pipe.
The last length of pipe at the end of a feed or cross main shall be provided with a lateral brace per
Section 9.3.5.3.
The maximum distance between hangers for listed nonmetallic pipe shall be modified as specified in
the individual product listings.
RESTRAINT OF BRANCH LINES. - Section 9.3.6
2) Restraint is considered a lesser degree of resisting loads than bracing and shall be provided by use of
one of the following:
(1)A listed sway brace assembly
(2)A wraparound U hook satisfying the requirements of 6- 4.5.3, Exception Number 3
(3)No. 12, 440 -lb (200 -kg) wire installed at least 45 degrees from the vertical plane and anchored on
both sides of the pipe
(4)Other approved means
3) Wire used for restraint shall be located within 2 ft of a hanger. The hanger closest to a wire restraint
shall be of a type that resists upward movement of a branch line. The end sprinkler on a line shall
be restrained against excessive vertical and lateral movement. Where upward or lateral
movement would result in an impact against the building structure, equipment, or finish materials,
branch lines shall be restrained at intervals not exceeding 30 ft
4) The unsupported length between the end sprinkler and the last hanger on the line shall not be greater
than 36 inches for 1" pipe, 48inches for 1 1/4" pipe and 60 inches for 1 1/2" pipe. - 9.2.3.4
5) The last length of pipe at the end of a feed or cross main shall be provided with a lateral brace per
Section 9.3.5.3.4
SPARE SPRINKLERS: - Section 6.2.9
6) 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
SYSTEM, MAIN DRAINS, or SECTIONAL DRAINS: - Section 8.15.2.4
7) Provisions shall be made to properly drain all parts of the system. Drains shall discharge either to the
outside or to a drain connection.
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.
Respectfully,
� 1
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Nelson,
Plans Examiner