Correspondence kvec °c k
February 8, 2006 .o
� ` CITY OF TIGARD
OREGON
Protemp Assoicates
Bruce Butner
9788 SE 17 Ave.
Portland, OR 97222
•
RE: MECHANICAL SYSTEM
Project Information
Building Permit MEC2006 -00064 Construction Type: 3-B
Tenant Name: Option Care Occupancy Type: B
Address: 15055 SW Sequoia Occupant Load: 157
Area 13,994 sq ft Stories: 1
The plan review was performed under the State of Oregon Mechanical Specialty Code (OMSC) 2002
edition; The submitted plans are approved subject to the following.
1. Every refrigerant system tests shall include both the high- and low- pressure sides of each system at
not less than the lower of the design pressures or the setting of the pressure relief device(s). The
design pressures for testing shall be those listed on the condensing unit, compressor or compressor
unit name - plate, as required by ASHRAE 15. OMSC 1108.1
2. Refrigeration Installer Certification All persons engaged in brazing or welding related
to the installation, alteration or repair of refrigeration piping systems not regulated by the
Oregon Boiler and Pressure Vessel Program under OAR Chapter 918, Division 225, shall
be certified in accordance with the requirements of this rule. Oregon Administrative
Rule 918-410-0015. OMSC 1101
3. Gas piping systems under 14 inches water column pressure, shall be tested at a pressure of not less
than 10 pounds per square inch gage. Test pressures shall be held for not less than 15 minutes
with no perceptible drop in pressure. For welded piping, and for piping carrying gas at pressures
exceeding 14 inches water column pressure, the test pressure shall be at least 60 pounds per square
inch for not less than 30 minutes. OMSC C406.4.1
4. Smoke detectors shall be installed in return air systems with a design capacity greater than 2000
cfm. Upon activation, the smoke detector shall shut down the air distribution system. Smoke
detectors shall be connected to a fire alarm system and shall activate an audible and visible alarm at
a constantly attended location. OR In occupancies not required to be equipped with a fire alarm
system, actuation of a smoke detector shall activate a visible and an audible signal in an approved
location. Exception: Smoke detectors are not required in the return air rystem when all the space served by the
air distribution rystem are prvteded by smoke detectors in accordance with the Oregon Fire Code. The area smoke
detection rystem shall mmp f with Section 606.4.OMSC 606.
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
5. Appliances installed on roofs or elevated structures exceeding 16 feet in height shall be provided
with a permanent means of access grade or floor level. OMSC 306.5
6. Equipment and appliances shall be installed as required by the terms of their approval, in
accordance with the conditions of the listing, the manufacturer's installation instructions and this
code. Manufacturer's installation instructions shall be available on the job site at the time of
inspection. OMSC 304.1
7. The building or structure shall not be weakened by the installation of mechanical systems. Where
floors, walls, ceilings or any other portion of the building or structure are required to be altered or
replaced in the process of installing or repairing any system, the building or structure shall be left in
a safe structural condition in accordance with the Brains Code. The cutting, notching and boring of
framing members shall comply with OMSC 302 Sections 302.3.1 through 302.5.3.
8. Equipment and appliances regulated by this code requiring electrical connections shall have a
positive means of disconnect in accordance with the Electrical Code. OMSC 301.7
9. Appliances serving different areas of a building other than where they are installed shall be
permanently marked in an approved manner that uniquely identifies the appliance and the area it
serves. OMSC 304.10
10. Appliances shall be accessible for inspection, service, repair or replacement without removal of
permanent construction. OMSC 306.1
11. Condensate from cooling coils or evaporators shall be collected and discharged to an approved
plumbing fixture or disposal area. OMSC 307.1
12. Equipment and appliances shall be installed as required by the terms of their approval, in
accordance with the conditions of the listing, the manufacturer's installation instructions
and this code. Manufacturer's installation instructions shall be available on the job site at
the time of inspection. OMSC 304.1
13. Ducts shall be supported with approved hangers at intervals not exceeding 10 feet or by other
approved duct support systems designed in accordance with the Building Code. Flexible and other
factory -made ducts shall be supported in accordance with the manufacturer's installation
instructions. OMSC 603.10
14. Metallic Ducts shall be supported in accordance with Sheet Metal & Air Conditioning
Contractors National Association, Inc. (SMACNA) — Metal and Flexible. OMSC 603.4
15. Where vibration isolation of equipment and appliances is employed, an approved means of
supplemental restraint shall be used to accomplish the support and restraint. OMSC 301.10
.Mercury Thermostats. The State of Oregon prohibits the installation of thermostats that contain
mercury in commercial and residential buildings. "In accordance with ORS 455.355, the disposal of
thermostats that contain mercury shall be in accordance with programs established by thermostat
manufacturers, their representative or distributor, or by delivery to sites that will ensure that the
mercury' does not become part of the solid waste stream or wastewater."
Approved Plans: I 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. OSSC 106.4.2
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 Henzel,
Senior Plans Examiner