Correspondence A
City of Tigard, Oregon • 13125 SW Hall Blvd. • Tigard, OR 97223
n
December 6, 2006
T I GARD
American Heating Inc.
Robert J Smith
1339 SE Gideon St
Portland, OR 97202
RE: NEW BUILDING MECHANICAL SYSTEM — TRIANGLE COMMONS BUILDING FOUR
Project Information
Building Permit. MEC2006 -00511 Construction Type: III -B
Tenant Name: Pacific Northwest Property Occupancy Type: B
Address: 11740 SW 68 Ave. Occupant Load: 336
Area: 33,574 sq ft Stories: 2
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. 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
2. 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.
3. 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. OMSC 606.
4. 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
5. Appliances shall be accessible for inspection, service, repair or replacement without removal of permanent
construction. OMSC 306.1
Phone: 503.639.4171 • Fax: 503.684.7297 • www.tigard or.gov • TTY Relay: 503.684.2772
1
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. OMSC 603.10
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. Every refrigerant system that shall be tested and proved tight after complete installation, and before
operation. 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
9. A person engaged in the brazing or welding of refrigeration piping shall have a valid certification meeting
the requirements in OAR 918 - 440 -0015. For refrigeration piping regulated by the State of Oregon Boiler
and Pressure Vessel Program, see requirements listed in OAR 918 - 225 -0310. All three of these
administrative rules were effective July 1, 2001.
10. OAR 918 - 225 -0310 Refrigerant Piping Systems; Components (1) The requirements of OAR 918 -225-
0430(5) shall be enforced under this rule for all refrigerant piping systems consisting of welded, brazed or
mechanically assembled piping and piping fittings exceeding 2 inches NPS, and containing any refrigerant
chemical rated as other than A -1 or B-1 by the American Society of Heating, Refrigeration and Air
Conditioning Engineers (ASHRAE 34) as adopted by the Oregon Mechanical Specialty Code.
11. -440 -0015 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.
12. 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 (3484 Pa) pressure, the test pressure shall be at least 60 pounds per square inch for
not less than 30 minutes. C406.4.1
13. 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
14. Condensate from cooling coils or evaporators shall be collected and discharged to an approved plumbing
fixture or disposal area. OMSC 307.1
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,
/
Val Henze ,
Senior Plans Examiner
Examiner
American Heating, Inc.
Date: December 4, 2006
To: Val Henzel, Senior Plans Examiner
City of Tigard
From: Brian Shea, GM - Operations
Regarding: New Building Mechanical System - Triangle Commons Bldg. 4
Plan Review Responses, MEC2006 -00511
1) See attached Stamped drawings and submittals for equipment and
materials.
2) See attached seismic calculations for RTU -1 & 2.
3) Condensate to discharge onto roof per Item #3 in Section 307.
4) See attached structural calculation for the 4' -42:' round section of
ductwork at the discharge of each RTU. All other ductwork is braced per the
current SMACNA guidelines and the hanger size charts shown on M600, which
were developed from the SMACNA guidelines.
1339 SE Gideon Street, Portland, Oregon 97202 -2418 503/239 -4600 FAX 503/239 -7038 1- 800 - 454 -HEAT
OREGON CCB #33135: WASHINGTON- AMERII"212JC /AMERIH1123RO
City of Tigard, Oregon • 13125 SW Hall Blvd. • Tigard, OR 97223 •
U'
•
November 17, 2006 - -
';'� 1r_. T I GARD
American Heatin g Inc. 1 1 i NOV 1 8 2006 �'
Brian Shea
111.\ j ; a
1339 SE Gideon St
Portland, OR 97202
ti
RE: NEW BUILDING MECHANICAL SYSTEM — TRIANGLE COMMONS BUILDING FOUR
Project Information
Building Permit: MEC2006 -00511 Construction Type: III -B
Tenant Name: Pacific Northwest Property Occupancy Type: B
Address: 11740 SW 68 Ave. Occupant Load: 336
Area: 33,574 sq ft Stories: 2
The plan review is performed under the State of Oregon Mechanical Specialty Code (OMSC) 2004
edition. The following information is required in order to complete the review.
1. This building is required to be designed by a registered design professional. Therefore, please
provide computations and specifications prepared and designed by the registered design
professional for this project. OMSC 106.3.1
2. Please provide wind and seismic resistance design showing equipment, appliances and supports will
resist the wind and seismic forces in accordance with the Oregon Building Code chapter 16 and as
required per OMSC 301.12, 301.15. OMSC 106.3.1
3. Please provide information on condensate disposal as required per OMSC 307.
4. Please provide details showing equipment bracing information like straps, rods, screw sizes, etc.
along with appliance installation information. OMSC 106.3.1
Please provide an item by item response.
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
Phone: 503.639.4171 • Fax: 503.684.7297 • www.tigard or.gov • TTY Relay: 503.684.2772
City of Tigard, Oregon • 13125 SW Hall Blvd. • Tigard, OR 97223
• •
• November 17, 2006
T I GARD
American Heating Inc.
Brian Shea •
1339 SE Gideon St
Portland, OR 97202
RE: NEW BUILDING MECHANICAL SYSTEM — TRIANGLE COMMONS BUILDING FOUR
Project Information
Building Permit: MEC2006 -00511 Construction Type: III -B
Tenant Name: Pacific Northwest Property Occupancy Type: B
Address: 11740 SW 68 Ave. Occupant Load: 336
Area: 33,574 sq ft Stories: 2
The plan review is performed under the State of Oregon Mechanical Specialty Code (OMSC) 2004
edition. The following information is required in order to complete the review.
1. This building is required to be designed by a registered design professional. Therefore, please
provide computations and specifications prepared and designed by the registered design
professional for this project. OMSC 106.3.1
2. Please provide wind and seismic resistance design showing equipment, appliances and supports will
resist the wind and seismic forces in accordance with the Oregon Building Code chapter 16 and as
required per OMSC 301.12, 301.15. OMSC 106.3.1
3. Please provide information on condensate disposal as required per OMSC 307.
4. Please provide details showing equipment bracing information like straps, rods, screw sizes, etc.
along with appliance installation information. OMSC 106.3.1
Please provide an item by item response.
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
Phone: 503.639.4171 • Fax: 503.684.7297 • www.tigard- or.gov • TTY Relay: 503.684.2772