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Correspondence Alk September 27, 2005 I ''. Pro Temp Associates Bruce Butner 9788 SE 17 Ave Portland, OR 97222 RE: TI MECHANICAL SYSTEM — VESTA Project Information Building Permit: MEC2005 -00505 Occupancy Type: B Tenant Name: Vesta Construction Type: 3- B Address: 11950 SW Garden Pl. 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. 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 2. 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. 606.2, 606.4 & 606.4.1 OMSC 3. 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 4. 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 Building Code. The cutting, notching and boring of framing members shall comply with OMSC 302 Sections 302.3.1 through 302.5.3. 13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772 5. 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. 603.10 OMSC 6. Metallic Ducts shall be supported in accordance with Sheet Metal & Air Conditioning Contractors National Association, Inc. (SMACNA) — Metal and Flexible. OMSC 603.4 7. Equipment and appliances regulated by this code requiring electrical connections shall have a positive means of disconnect in accordance with the Electrical Code. 301.7 OMSC 8. Appliances shall be accessible for inspection, service, repair or replacement without removal of permanent construction. 306.1 OMSC 9. Condensate from cooling coils or evaporators shall be collected and discharged to an approved plumbing fixture or disposal area. 307.1 OMSC 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: 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, c:ce. al Henzel, Senior Plans Examiner