Report s
.4114- r5171 s.-
_
G�, 1 GeoPacific
,
Real-World Geotechnical Solutions
Investigation • Design • Construction Support
December 11, 2014
Project No. 12-2704
Stonebridge Homes
4230 SW Galewood St., Ste. 100
Lake Oswego, OR 97035
Fax 503-387-7615
Email Andy(c stonebridoehomesnw.com; JimDstonebridqehomesnw.com
RE: FOUNDATION EXCAVATION REVIEW
SOUTH VIEW SUBDIVISION LOT 4
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 yesterday to review the single family home foundation
layout on Lot 4. We understand that the proposed building is a two-story home. 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 3/4 inch, respectively, over a span of 20 feet.
At the time of our site visit, the excavation was nearly 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.
Due to rocky and silty soils encountered throughout the site, all foundations should incorporate
appropriate drainage measures. Crawlspaces should be provided with a low-point drain and pass
through pipes should be installed through footings which would otherwise restrict water flow to the
low-point drain.
Care should be taken to avoid saturation or disturbance of footing subgrade soils during and after
excavation. If footing bearing soils become saturated or disturbed, any softened soil or slough
should be removed and replaced with crushed aggregate or additional concrete.
14835 SW 72"d Avenue Tel (503) 598-8445
Portland, Oregon 97224 Fax (503) 941-9281
FOUNDATION CERTIFICATION
DOCUMENT NUMBER 2012-009929, LOCATED IN THE SOUTHWEST 1/4 O. SECTION 10,
TOWNSHIP 2 SOUTH, RANGE 1 WEST, WILLAMETTE MERIDIAN,
CITY OF TIGARD, WASHINGTON COUNTY, OREGON
DOC. NO. I 'ASPEN RIDGE' 1 3172 S`'
2009-101881 I LOT 32 LOT 33 I LOT 34 LOT 35 LOT 36
I}or v eAtgi If A...(..
S88'17'187 36`.85' ----- __--
LOT 4'EMERALD
HEIGHTS'
w-fr2xt4- 01210
LOT 3
"EMERM.D HEIGHTS'
1
00 O P
; 4It' 5.-S
G
►� o PARCEL 2
DOC. NO. o ? PP NO.
2009-101881 z a . 2004-069
DOE. NO. 2012-009929 �= SCALE 1° - 100 FEET
DOC. NO. IN
2007-27690
100 0 40 60 NI 100
17...—I1— 1"--1
DOC. NO. REGISTERED
267.8' 2007-27690 PROFESSIONAL
,6 fi' LAN/ SU=EYOR liff
•
ORE ON
ROBERT D. RETf1G
6012415
'E.41' _P , RENEWS: 12/31/16
�
41!)
I. ROBERT RETI1G, A REGISTERED PROFESSIONAL. LAND SUR'VEYDR
Nee - IN THE STATE OF OREGON, FEREBY CERTIFY THAT I HAVE STAKED
THE FOUNDATION FOR DOCUMENT NUMBER 2012-009929 WITH
y/. HUBS AND TACKS.
DATE
PREPS FOR BEEF BEND ROAD
/ VENTURE PROPERTIES, INC. BY.BRH1O{CKEn BT.ROR1awc 3252CSTK f� 3252
42Y) SW GkEW000 STREET AKS ENGINEERING & FORESTRY, LLC
ALS(
SUITE 1CO 12965 SW HERMAN R7 SUITE 100
LAKE OSV EGO, OR 97035 TUALA'1N• OR 97062 www.cks-a"g,ccm
PHONE: 503.563.6151 FAX: 503.563.6152