Correspondence (138) „sal 110
November 23, 2002
CITY OF TIG A
OREGON
Roger Superneau
Ankrom Moisan Associated Architects
6720 SW Macadam, Suite 100
Portland, OR 97129
Re: Revised Exiting and Alternate Methods of Construction
Green Office Building, 11560 SW 67
BUP2001 -00061
Dear Mr. Superneau,
We have reviewed the revised exiting plans for the above referenced project as well as
the request for alternate methods of construction. Based on the structural conditions of
moving the stairways and the stage of construction this project is in, we are approving
the alternates subject to the following conditions. This review was performed under the
provisions of the State of Oregon Structural Specialty Code (OSSC), 1998 edition and
the International Building Code (IBC), 2000 edition.
• The current configuration of the exit enclosures does not meet the provisions of
OSSC Section 1004.2.4. The overall diagonal of the building is 114 feet requiring
the exits to be separated a distance of 57 feet. They are currently 32.5 feet apart.
The revised plans show one -hour rated exit passageways on all three floors at
the north end of the building. This puts the required exits approximately 38 feet
apart. You have requested Exception 2 of IBC Section 1004.2.2.1 be utilized as
an alternate which allows the exit separation to be reduced to one -third the
overall diagonal when the building is equipped throughout with an automatic
sprinkler system. One -third of 114 feet is 38 feet. We understand that an
automatic sprinkler system will be installed. The IBC is a nationally recognized
document containing similar provisions as the OSSC. In accordance with OSSC
Section 104.2.8, for alternates, we believe this provides an equal degree of
safety and this request is hereby approved.
• OSSC Section 1005.3.4.4 states that openings into exit passageways shall be
limited to those necessary for egress from normally occupied areas. The revised
plans show the main floor restrooms opening into the main floor exit
passageway. Due to the hardship of reconfiguring the under -slab plumbing and
to minimize the possibility of compromising the structural footings, you have
requested that we approve an alternate for the existing configuration. Your
proposal is to construct the walls separating the restroom and exit passageway
with 2 -hour fire - resistive construction with 90- minute doors. These two restrooms
contain only 1 water closet and 1 lavatory each and will only be used by a single
occupant at any given time. In accordance with OSSC Section 104.2.8 for
alternates methods of construction, we believe this provides an equal
degree of safety and this request is hereby approved.
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
The submitted revised drawings by Ankrom Moisan Associated Architects are approved
subject to the following conditions.
1. All doors opening into the exit passageways and exit enclosures shall be
provided with doors with a maximum transmitted temperature end point not
exceeding 450 F above ambient at the end of 30 minutes of the fire exposure
specified in UBC Standard 7 -2. OSSC 1005.3.3.5, 1005.3.4.4.
2. Penetrations into or through exit passageways are prohibited except for those
serving the exit passageway such as sprinkler piping, standpipes, and electrical
conduit terminating is a listed box not exceeding 16 square inches. OSSC
1005.3.4.4.
3. Penetrations into or through exit enclosures are prohibited except for those
serving the exit enclosure such as ductwork and equipment necessary for
independent stairway pressurization, sprinkler piping, standpipes, and electrical
conduit terminating is a listed box not exceeding 16 square inches. OSSC
1005.3.4.4.
4. Automatic - closing fire assemblies shall have one heat - actuating device installed
on each side of the wall at the top of the opening and one on each side of the
wall at the ceiling height where the ceiling is more than 3 feet above the top of
the opening. OSSC Section 713.2, 713.6.1
5. There shall not be enclosed usable space under stairways or ramps in an exit
enclosure. The open space under such stairways shall not be used for any
purpose. OSSC Section 1005.3.3.6.
6. Exit signs shall be provided and illuminated in accordance with OSSC Sections
1003.2.8 and 1003.2.9.
7. A copy of the approved plans shall be kept on site at all times and made
available for inspection purposes. OSSC 106.4.2.
If you have any questions or concerns, please contact me at (503) 718 -2448.
Sincerely,
/04,
Gary Lampella
Building Official
c. Joe Green
Mark Hoyt
Hap Watkins, Supervising Inspector
Jim Hendryx, Director of Community Development
File
OCT -09 -2002 WED 03 29 PM SHERMAN,SHERMAN,MURCH FAX NO. 5033704308 P. 01/01
s. ` '"" -v October 9, 2002
Greg Lampella
City of Tigard Via fax 503
Y g ( ) 624 -0752
13125 SW Hall Blvd. and First Class Mail
Tigard, OR 97223
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'Mark C. Hoyt RE: Green Office Building
Attorney at Law
Dear Greg:
I write to follow the last portion of our conversation during today's site
visit.
At that time, 1 provided you a stamped detail from Ankrum Moisan
Associated Architects showing a detail which deleted the sheetrock from the
exterior of the building. The deletion of the sheetrock was based upon the fact
that the bricks would provide the necessary four inch thick 75 solid material
to provide the required one hour firewall. Because the bricks provide the
firewall, the sheetrock was not necessary.
You reviewed the documentation and materials on -site, and indicated
you wished to do some research back at the office, but would let both Mr.
Green, and 1, know today as to whether the revised plan would be acceptable.
As we discussed on site, it is essential that we know whether the
sheetrock can be deleted today. As the building currently sits, enough sheetrock
is installed on the building to allow the crews to continue to work through the
end of today. Starting tomorrow, however, they will reach portions of the
building where sheetrock has not been installed. Accordingly, if the addendum
is not approved, additional materials and work will have to be performed, which
could be unnecessary. Therefore, it essential we know as soon as possible.
If there is any further information I can provide you to help you evaluate
this matter, please let me know.
If you have any questions regarding this matter, please feel free to
contact me at your convenience.
'ss
ours 1 :;,,,/,,-; . . , - . .
475 Cottage St. N.E., /
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Suite 120 ,/ / -
Salem, Oregon 97301 /./
Phone: 503 -364 -3302 f/ Mark C. Hoyt
Fax: 503 - 370 -4308
` E -mail: MCH :vmp
? hoyt cvhoytlaw.net cc: Joe Green
09/30/02 MON 11:14 FAX 5036243681 CITY OF TIGARD BLDG DEPT 2001
$$$$$$$$$$$$$$$$$$***
*** TX REPORT $$$
TRANSMISSION OK
TX /RX NO 4980
CONNECTION TEL 15033704308
CONNECTION ID
ST. TIME 09/30 11:13
USAGE T 00'52
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RESULT OK
SETTING THE STANDARD FOR SERVICE EXCELLENCE
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From: Darrel "Hap" Watkins, Inspection Supervisor
Company: City of Tigard, Building Inspection Section
Phone: (503) 639 -4171
Fax: (503) 624 -3681
Date: ,f--3e)—D2__.
Pages including this page: ` 3
COMMENTS:
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SETTING THE STANDARD FOR SERVICE EXCELLENCE
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From: Darrel "Hap" Watkins, Inspection Supervisor
Company: City of Tigard, Building Inspection Section
Phone: (503) 639 -4171
Fax: (503) 624 -3681
Date: - 3D -1,2._
Pages including this page:
COMMENTS:
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Inspection Supervisor
City of Tigard, 13125 SW Hall Blvd., Tigard, OR 97223
** PLEASE DELIVER THIS FAX IMMEDIATELY **
•
September 30, 2002
Joe Green
RE: 11650 67 Ave, Green office Complex
The City of Tigard Building Division has reviewed the submitted building plans for the above
referenced address in accordance with the Oregon Structural Specialty Code (OSSC), 1998
edition and the 1999 Uniform Fire Code as amended by TVFR.
Exiting System Only
Due to some concerns brought forward by the Building Official, an additional Exiting review has
been performed on the above referenced structure.
B- Occupancy
Type of construction V l hr
Three stories
1) Exiting: 1849/100 =19 occ. One exit per room required (first floor only)
Second and third require two exits from each room when the floor or area exceeds
9 occupants. sec.1004.2.3.2
Two exits from each story required sec.1004.2.3.2
2) Separation of exits sec.1004.2.4:
Each required exit door serving room or area shall be separated half the diagonal
of the space served.
Each exiting system shall be separated half of the overall diagonal of the story
Minimum separation of Exit Enclosures is 30 feet.
3) Exit enclosures required with exit passageway section 1005.3.3.2: One of the two stair towers
is required to be constructed as exit enclosure with passageway. By exception, the other may
pass through the street floor lobby, provided the entire floor is protected with automatic
sprinklers. (Plans do not show a sprinkler riser room.)
Minimum construction: one -hour
Extent or enclosure: V2 of the required exits are required to be in an
enclosure. (exception)
Openings and penetrations: Openings are limited to normally occupied spaces into
the enclosure. (No restrooms, storage rooms, and equipment rooms)
Doors: min one -hour rated with self - closures.
Penetrations: Are Prohibited. See exceptions.
4) Stair construction: 604.4.2
5) Exit passageway: 1005.3.4 required from the exit enclosure to exterior.
Openings 1005.3.4.4 "Elevators shall not open into an exit passageway.
Doors: Minimum one -hour rated.
Due to the major code items identified in this letter the entire structure must be redesigned and
submitted for review per Section 106.4.3 Oregon Structural Specialty Code..
Please submit revised plans showing compliance with codes.
If you have any questions regarding this review, please contact me at (503) 369 -4171 ext. 2436
Sincerely,
Daryl Jones
Plans Examiner
CC: File
Hap Watkins, Inspection Supervisor
E N G I N E E R I N G
TRANSMITTAL
To: Mr. Robert Poskins Date: January X001
City of Tigard Building Dept. Project: Green Office Park
13125 SW Hall Blvd.
Tigard, OR 97223 DL #: •MNT002
From Gary Darling Case /File #:
Transmitting: Via: For Your:
❑ Attached ❑ Mail ❑ Review & Comment
❑ Separate Cover ❑ Messenger ❑ As Requested
❑ Number of Pages Including Cover ❑ Fed -Ex ❑ Information /File
Copies Description
3 Green Office Park Drawings
2 Geotech Report
Z Pegl ieEi'oti
COMMENTS:
Bob,
•
You wilt have•a drainage report by Tuesday
Signed: �f l
D: \PROJECTS\MENTQQ kTIGTRAN2.DOC
222 NW Davis St. Suite 403 • Portland, Oregon 97209 • 503.225.1679 • Fax 503.525.9266