Report GeoPacdic
Engineenny.Inc
Real-World Geotechnical Solutions
Investigation • Design • Construction Support
July 27, 2015
Project No. 12-2704
Project No. 1842 15 72 S•, 1-4,- vcy s c
y-AST ZG 15 - D
Stonebridge Homes �r v
4230 SW Galewood St., Ste. 100 2_0,
Lake Oswego, OR 97035
Fax 503-387-7615
Email Andy(p�stonebridclehomesnw.coln; JimD(a�stonebridgehomesnw.corn
RE: DECK FOOTING SUBGRADE REVIEW
SOUTH VIEW SUBDIVISION LOT/ I-
'i,®HARVEYS VIEW AVENUE
TIGARD, OREGON
References: GeoPacific Engineering, Inc., Geotechnical Explorations, Knauss Property
Subdivision, 12035 Southwest Beef Bend Road, Washington County, Oregon, report
dated August 10, 2012
GeoPacific Engineering Inc. visited the site on last Friday to review the deck stair footing subgrade
on Lot q. All 5 footings were excavated to engineered fill, through the landscape fill placed for the wall
and pathway. 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 3/. inch,
respectively, over a span of 20 feet. At the time of our site visit, the excavation was complete. The
excavation consisted of predominantly medium dense to dense, rocky fill soil that could be probed
less than 2 inches with heavy pressure using a steel "T" bar probe. These soils are considered
adequate to support the planned foundation loads. Footing-to-slope setbacks were adequate and
foundation embedment depths appeared adequate.
Our work scope pertains to a geotechnical engineer's foundation excavation 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.
PI U/-A
\`� - SSSincerely, N6& /D
GE OPACI FIC ENGINEERING, INC. 4.14
OREGON
James D. Imbrie, P.E., G.E. V47 so. �
Geotechnical Engineer
EXPIRES:06t30120 _
14835 SW 72"d Avenue Tel (503)5984445
Portland, Oregon 97224 Fax (503) 941-9281