Report (86) GeorgCIfic.41
Engineering,Inc.
Real-World Geotechnical Solutions
•Investigation
•Design
•Construction Support
December 6, 2017 Gt
Project No. 13-3036 lnn 'Ob( (p W3-76)1
Westwood Homes, LLC V r Y
12700 NW Cornell Road 9 g2 5 w5t f✓l,e. oce- —.
Portland, Oregon 97229 I t
Phone: (503)715-2383
Fax: (503) 342-2403
Via Email: Darrin@westwoodhomeslIc.com
FOUNDATION SUBGRADE TESTING
11982 Viewcrest Court
Tigard,Oregon
GeoPacific Engineering Inc. visited the site to review the foundation subgrade at the above address.
Upon our first visit, we requested that the front of the home be deepened one foot. After deepening,
in our opinion, the observed subgrade is generally adequate for support to an allowable bearing
pressure of 1,500 psf. The expected maximum anticipated total and differential footing movements
(generally from soil expansion and/or settlement) are 1 inch and 34 inch, respectively, over a span of
20 feet.
At the time of our site visit, the excavation was complete, between 2 to 3 feet in depth, which exposed
medium stiff to stiff, native clayey-silt. These materials probed 3 to 12 inches and are considered
adequate to support the planned foundation loads. Footing-to-slope setbacks are not an issue.
Our work scope pertains to a geotechnical engineer's foundation subgrade review only and the
conditions existing and exposed at the time of our site visit. Within the limitations of scope, schedule
and budget, GeoPacific attempted to execute these services in accordance with generally accepted
professional principles and practices in the fields of geotechnical engineering and engineering geology
at the time the report was prepared. No warranty, express or implied, is made. If you have any
questions, please call.
Sincerely,
GeoPacific Engineering, Inc. .0, PRQF�'
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James D. Imbrie, P.E.
Geotechnical Engineer EXPIRES:06/30/20
14835 SW 72''Avenue Tel(503)598-8445
Portland,Oregon 97224 Fax(503)941-9281