Correspondence December 22, 2005
CITY OF TIGARD
Thorson Baker & Assoc. Inc. OREGON
Jeff Zunt
3030 W Streetsboro Rd
• Richfield, OH 44286
RE: HVAC — HOLLISTER CO
Project Information
Building Permit: MEC2005-00823 Construction Type: II-B
Tenant Name: Hollister Co. Occupancy Type: M
Address: 9777 SW Washington Sq Occupant Load: . 185
Area: 7,624 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 ball 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 cfm (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
r 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
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.
Respectfully,
Val Henzel,
Senior Plans Examiner