Correspondence fi
dt,
April 26, 2005
CITY OF TIGARD
OREGON
Polytech Heating, LLC
2263 SE 85 Ave
Portland, OR 97216
RE: MECHANICAL SYSTEM
Project Information
Building Permit: MEC2005 -00188 Occupancy Type: A3
Tenant Name: Oak Tree Apt II /Clubhouse Construction Type: V -B
Address: 16055 SW 108 Ave Occupant Load: 75
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. Ductwork shall be supported in accordance with Sheet Metal & Air Conditioning
Contractors National Association, Inc. (SMACNA)
2. Attics containing appliances shall be provided with an opening and unobstructed
passageway large enough to allow removal of the largest component of the appliance.
The passageway shall not be less than 30 inches high and 22 inches wide and not more
than 20 feet (6096 mm) in length. The passageway shall have continuous solid
flooring not less than 24 inches wide. A level service space not less than 30 inches
deep and 30 inches wide shall be present at the front or service side of the equipment.
Exceptions: 1. The passageway and level service space are not required where the
appliance is capable of being serviced and removed through the required opening.
Where the passageway is not less than 6 feet high for its entire length, the passageway
shall be not greater than 50 feet in length. OMSC C306.3
3. A lighting fixture controlled by a switch located at the required passageway
opening and a receptacle outlet shall be provided at or near the equipment location in
accordance with the ICC Electrical Code. OMSC C306.3.1
4. Plastic pipe and fittings used to vent appliances shall be installed in accordance with the
pipe manufacturer's installation instructions and the appliance manufacturer's installation
instructions. Solvent cement joints between ABS pipe and fittings shall be cleaned.
Solvent cement joints between CPVC and PVC pipe and fittings shall be primed. The
primer shall be a contrasting color.
Exception: Where compliance with this section would conflict with the appliance
manufacturer's installation instructions. OMSC 801.20
13125 SW Hall Blvd„ Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
5. 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. OMSC 302
6. The cutting, notching and boring of framing members shall comply with OMSC
Sections 302.3.1 through 302.5.3.
7. Appliances shall be accessible for inspection, service, repair or replacement without
removal of permanent construction. OMSC 306.1
8. Manufacturer's installation instructions shall be available on the jobsite at the time of
inspection. OMSC 304.1
9. Condensate from cooling coils or evaporators shall be collected and discharged to an
approved plumbing fixture or disposal area. 307.1 OMSC
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."
11. 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
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.
Respe 11
Va Henzel Senior Plans Examiner