Report (78) co-4.Q
f\C-)6\ PO
r
Off
Hampton Oaks Office Building
Fire Restoration
6665 SW Hampton St
Portland, Oregon 97223
June 26, 2018
For:
Tim Young
Harbro
The JAS Engineering design team has received the request from you to provide fire and life
safety and structural analysis, engineering design, construction drawings and structural
calculations for the project referenced above. We have visited the property and assessed the
requirements with you. We can prepare plans and calculations for submittal to City of Tigard, for
permitting.
OBJECTIVES
The JAS team understands that you need engineering services to repair the fire damage to the
lower level tenant space of the two story office building located at the address noted above. The
structural damage from the fire appears to be primarily a large portion of the main floor framing
system. The second floor I joist system and center Glu Lam Beams (GLBs)have discoloration
from heat and smoke damage with similar damage on some of the exterior and interior walls.
The center GLBs are supported by HSS steel columns. The ceiling of the lower space has been
removed which allows inspection of the floor framing. The project will require floor joist
replacement of the damaged members which appears to be a large portion of this tenant space.
The bathroom areas will need to be rebuilt due to the damage to the supporting floor in this area.
Some of the windows are also damaged and may require replacement. The JAS team will
address the structural damage of the Lower office space noted above due to the fire and will be
preparing structural plans, engineering design and calculations along with the non-structural
drawings for a complete permitting packet. We have also provided estimated fees to provide the
permitting service at the City if you would like us to do this (see the"compensation" section of
the contract).
�p PR iek
8 58S
.,w
• 8ER 12, Z
-1/VDR EVd �
�`XPIRES:
JAS ENGINEERING INC. • 1419 WASHINGTON ST. SUITE 100 OREGON CITY, OR 97045 • 503-657-9800
As noted above, the second floor I joists have seen some heat and there is smoke damage. We
intend to contact the manufacturer and research the performance of these members to determine
if any repairs are required to insure they will continue to perform as they are intended. Scraping
and smoke sealing will be required for any of these members where they have minor smoke
damage and are to remain. Any minor charred or smoke damaged framing for the walls that
remain will need scraping and to be smoke sealed as well. We will check existing window and
door headers to support the code required roof and floor loads.
We understand the project construction is to be built based on the drawings prepared by us. The
scope of the project is to provide plans showing the location and extent of the replacement main
floor framing along with the interior wall framing. The exterior walls appear to not have
suffered much damage so we will not be required to provide a lateral design for wind and
seismic forces as there is no change to the lateral force resisting system. JAS Engineering will
provide the design to meet the code required floor live load and dead load forces. Structural
details will be provided to show the construction requirements for the floor framing to beam and
foundation wall connections.
The JAS Engineering team understands you would like us to provide the non-structural design
elements for this project. We will provide the design for the non-structural elements such as
window replacement locations, replacement insulation requirements, and ventilation fan
locations in the restrooms. We will provide a code study to include occupancy and construction
type and include information on the separation required between the tenant spaces at the walls
and floor/ceiling, and rated chases for the ventilation fans if required. The elements to be
included are the 1-hr fire wall and floor/ceiling assemblies if required between spaces. Special
consideration will be required for the fans from the rest rooms and any other penetrations. These
and other recommendations based on code requirements will be re-visiting after any additional
demolition and the preliminary drawings have been completed with your input.
Design Criteria:
IBC 2012: With 2014 OSSC Amendments
Snow Load: 25 PSF
Roof Dead Load: 15 PSF
Floor Live Load: 50 PSF
Floor Dead Load: 15 PSF
Wind Load: No Change
Seismic: No Change
JAS ENGINEERING INC. • 1419 WASHINGTON ST. SUITE 100 OREGON CITY,OR 97045 • 503-657-9800