Correspondence •
August 3, 1999 .:.. _ II� ,
CITY OF TIGAR
Silco Construction Co.
PO Box 83299 OREGO
Portland, OR 97283
RE: Carts Jr. Mechanical Plan Review .
12140 SW Scholls Ferry Rd.
PC#: 7 -46c MEC#: 99 -00322 .
Submittal documents for the above referenced project have been reviewed for conformance with the .
applicable 1998 Oregon Specialty Codes and other applicable codes and standards. The following
comments are noted:
( MECHANICAL I
1. Provide an engineer's analysis of each structural member supporting the additional HVAC units.
. The engineer shall submit plans, computations and specifications. Each plan and computation
shall bear the original seal of the engineer licensed to practice as such. [OSSC, Section 106.3.2].
2. The attachment of permanent equipment (HVAC) supported by the . building's structural
components shall be designed to resist the total design seismic forces prescribed in Section
1603.2 of the Structural Specialty Code. Provide an engineer's design specifying attachment
requirements [OSSC, Section 106.3.2 and OMSC, Section 304.4].
3. The exhaust and makeup air systems shall be interconnected by an electrical interlocking switch
[OMSC, Section 402.4].
4. Each individual roof - mounted HVAC shall be permanently labeled as to the areas it serves
[OMSC, Section 305.5]. In addition, each unit shall be equipped with a power disconnect. A 120 -
volt receptacle shall be located within 25' of each unit [OMSC, Section 309.1].
5. Air moving systems (combination of units), supplying air in access of 2000 CFM to enclosed
spaces, shall be equipped with an automatic shut -off. The smoke detectors shall be supervised
when a fire . detection or alarm system is provided [OMSC, Section 608].
( ENERGY
1. Submit completed applicable Forms 4a through 4j, and required duct insulation Form 4a through 4c
of the Energy Code Compliance Manual (Revised April 1996).
Please submit two copies of revised submittal documents and a letter indicating your response to the
above comments for review. Please call me at (503) 639 -4171 if you have any questions.
Sincerely,
T d. 0
R o ert Poskin, CBO
SENIOR PLANS EXAMINER
tlbldp\pmeys4nec99322.doe
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772