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Correspondence (7 December 27, 2005 „,-44-,16.1)11 CITY OF TIGARD Express Permits OREGON Chris McComas 1327 Post Ave. # H Torrance, CA 90501 RE: MECHANICAL SYSTEM - METRO PARK Project Information Building Permit: MEC2005 -00824 Construction Type: 11 -B Tenant Name: MetroPark Occupancy Type: M Address: 9681 SW Washington Sq Occupant Load: 78 Area: 2,928 sq ft Stories: 1 The plan review was performed under the State of Oregon Mechanical Specialty Code (OMSC) 2004 edition. The submitted plans are approved subject to the following. 1. Appliances shall be accessible for inspection, service, repair or replacement without removal of permanent construction. 306.1 OMSC 2. Manufacturer's installation instructions shall be available on the jobsite at the time of inspection. 304.1 OMSC 3. 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. 4. Where multiple air - handling systems share common supply or return air ducts or plenums with a combined design capacity greater than 2,000 cfm (0.9 m3 /s), the return air system shall be provided with smoke detectors in accordance with Section 606.2.1. 606.2.2 OMSC 5. Smoke detectors shall be installed in return air systems with a design capacity greater than 2,000 c&n (0.9 m3 /s), in the return air duct or plenum upstream of any filters, exhaust air connections, outdoor air connections, or decontamination equipment and appliances. Exception: Smoke detectors are not required in the return air system where all the space served by the air distribution system are protected by smoke detectors in accordance with the Oregon Fire Code. The area smoke detection system shall comply with Section 606.4. 606.2.1 OMSC 13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772 6. 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 7. Metallic Ducts shall be supported in accordance with Sheet Metal & Air Conditioning Contractors National Association, Inc. (SMACNA) — Metal and Flexible. OMSC 603.4 8. 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 9. Permanent equipment supported by the structure, 400 lbs and over, shall have their attachments designed in accordance with the Building Code. 301.16 OMSC 10. 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. 304.10 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 1 throughout all phases of construction. 106.4.2 OSSC Premises Identification: Approved numbers or addresses shall be provided for all new buildings in such a position as to be plainly visible and legible from the street or road fronting the property. 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. Respect Val Henzel, Senior Plans Examiner