Correspondence Np
May 3, 2004 S AL I
CI9 Y OF TIGARD
Dan Collins OREGON
Collins Mechanical
PO Box 800
Oregon City, OR 97045
RE: MODIFICATIONS TO EXISTING MECHANICAL SYSTEM
Project Information
Building Permit: MEC2004 -00218 Construction Type: VN
Tenant Name: Fowler Middle School Occupancy Type: E -1
Address: 10865 SW Walnut Street Occupant Load: NA
The plan review was performed under the State of Oregon Mechanical Specialty Code
(OMSC) 2002 edition; and the Tualatin Valley Fire & Rescue Ordinance 99 -01 (TVFR99-
01) 1999 edition. The submitted plans are approved subject to the following.
1. Hydronic piping shall be of a material as noted in attached Table 1202.4 OMSC
2. Ductwork shall be supported in accordance with Sheet Metal & Air Conditioning
Contractors National Association, Inc. (SMACNA)
1 / 3. Suspended -type VAV's shall be supported by non - combustible elements that are
designed and constructed to accommodate the weight and dynamic loads 920.2
OMSC
4. A Boiler Permit is required for the project. Contact the Building Codes @ 503 -378-
4133 for the permitting process.
5. Each appliance shall be provided with a shutoff valve separate from the appliance.
The shutoff valve shall be located in the same room and within six feet of the
appliance served. Access shall be provided to the shutoff valve. C409.5 OMSC
6. Equipment and appliances regulated by this code requiring elects ical connections
shall have a positive means of disconnect in accordance with the Electrical Code.
301.7 OMSC
7. Permanent equipment supported by the structure, 400 lbs and over, shall have their
attachments designed in accordance with the Building Code. 301.16 OMSC
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
8. 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
9. Appliances shall be accessible for inspection, service, repair or replacement without
removal of permanent construction. 306.1 OMSC
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 Transmittal. The letter of transmittal assists the City of
Tigard in tracking and pro ing the documents.
Resp • 't'' y,
Br'.•':lalo
/ enioir P1.1 Examiner
CHAPTER 12
HYDRONIC PIPING
SECTION 1201 TABLE 1202.4 — continued
GENERAL HYDRONIC PIPE
MATERIAL STANDARD (see Chapter 15)
1201.1 Scope. The provisions of this chapter shall govern the Cross - linked
construction, installation, alteration and repair of hydronic pip- polyethylene/aluminum / ASTM F1281;
ing systems. This chapter shall apply to hydronic piping sys- cross - linked polyethylene CSA CAN /CSA -B -137 10
terns that are parts of heating, ventilation and air - conditioning (PEX -AL -PEX) pressure pipe
systems. Such piping systems shall include steam, hot water, Cross - linked polyethylene ASTM F 876; ASTM F 877
chilled water, steam condensate and ground source heat pump (PEX) tubing
loop systems. Potable cold and hot water distribution systems Lead pipe FS WW- P -325B
n shall be installed in accordance with the plumbing code. Polybutylene (PB) plastic pipe ASTM D 3309
and tubing
1201.2 Pipe sizing. Piping for hydronic systems shall be sized Polyethylene (PE) pipe, tubing ASTM D 2513; ASTM D
for the demand of the system. and fittings (for ground 3035; ASTM D 2447;
source heat pump loop ASTM D 2683; ASTM F
systems) 1055; ASTM D 2837; •
ASTM D 3350; ASTM D
1693
SECTION 1202 Polyvinyl chloride (PVC)
MATERIAL plastic pipe ASTM D 1785; ASTM D 2241
1202.1 Piping. Piping material shall conform to the standards Steel pipe ASTM A 53; ASTM A 106
cited in this section. Steel tubing ASTM A 254
Exception: Embedded piping regulated by Section 1209.
1202.5 Pipe fittings. Hydronic pipe fittings shall be approved
1202.2 Used materials. Reused pipe, fittings, valves or other for installation with the piping materials to be installed, and
materials shall be clean and free of foreign materials and shall shall conform to the respective pipe standards or to the stand -
be approved by the code official for reuse. ands listed in Table 1202.5.
1202.3 Material rating. Materials shall be rated for the operat- TABLE 1202.5
ing temperature and pressure of the hydronic system. Materials HYDRONIC PIPE FITTINGS
shall be suitable for the type of fluid in the hydronic system. MATERIAL STANDARD (see Chapter 15)
Bronze ASME B16.24
1202.4 Piping materials standards. Hydronic pipe shall con Copper and copper alloys ASME B16.15; ASME B 16.18;
form to the standards listed in Table 1202.4. The exterior of the ASME B 16.22; ASME B16 23;
pipe shall be protected from corrosion and degradation. ASME B16.26; ASME BI6.29
Gray iron ASTM A 126
TABLE 1202.4 Malleable iron ASME B 16.3
HYDRONIC PIPE Plastic ASTM D 2466; ASTM D 2467;
ASTM D 2468; ASTM F 438;
MATERIAL STANDARD (see Chapter 15) ASTM F 439; ASTM F 877
Acrylonitrile butadiene styrene ASTM D 1527; ASTM D 2282 Steel ASME B 16.5; ASME B 16.9;
(ABS) plastic pipe ASME B16.11; ASME B16.28;
Brass pipe ASTM B 43 ASTM A 420
Brass tubing ASTM B 135
Copper or copper - alloy pipe ASTM B 42, ASTM B 302 1202.6 Valves. Valves shall be constructed of materials that are
Copper or copper -alloy tube ASTM B 75; ASTM B 88; compatible with the type of piping material and fluids in the
(Type K, L or M) ASTM B 251 system. Valves shall be rated for the temperatures and pressures
Chlorinated polyvinyl chlonde ASTM D 2846; ASTM F 441; of the systems in which the valves are installed.
(CPVC) plastic pipe ASTM F 442
1202.7 Flexible connectors, expansion and vibration com-
pensators. Flexible connectors, expansion and vibration con -
(continued) trol devices and fittings shall be of an approved type.
2000 INTERNATIONAL MECHANICAL CODE® 87
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