Correspondence • MSG ) �1
9
CO T
O
o
hvAC
INCORPORATED i
P H E A T 1 N G y
Since 1986
November 17, 1999
Robert Poskin
City of Tigard
13125 SW Hall Blvd.
Tigard, Oregon 97223
RE: Grecon @ 15875 SW 74
MEC# 99 -00475
PC# 11 -16c
Bob,
We are submitting revised drawings on the above project to reflect the seismic bracing
detail requested by you in your letter dated November 10, 1999. Also, referenced in
your letter we will indicate on the rooftop equipment not only the equipment numbers,
but what location it serves. The electrical subcontractor on the project will take care of
the power disconnect and also place the 120 volt receptacle within 25' of each unit.
With regard to item #2 in your letter, the fans on this project are all well uncle 2'00cf
as indicated on the equipment schedule on the drawing.
'rte
I hope this answers all your review comments.
Sin - -
Dan Spencer
DS /sr
815 S.E. SHERMAN o PORTLAND, OREGON 97214 0 (503) 239 -4822 o FAX (503) 239 -6555
OR -CCB# 50897 o WA -L &I# HVACI * "125J6
4,041,t
November 10, 1999
CITY OF 11G
HVAC, Inc. OREG
815 SE Sherman
Portland, OR 97214
•
RE: Grecon Mechanical Plan Review
15875 SW 74th
PC #: 11 -16c MEC#: 99 -00475
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:
IGI ECHA °NICAL P
1. 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 301.12 and 301.14].
2. 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].
3. 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].
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.
Sincerel ,
obert Poskin, CBO
SENIOR PANS EXAMINER
1 bldg \pmisys\mec99475. doc
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772