HomeMy WebLinkAboutPermit Geo-Tech Report 2007-7-1
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JUly 1, 2007
Gra8llRools Thirklng, Inc.
1135 Cal Young Rosd
Eugene, Oregon 97401
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Ron.leI J. Derrlc". p, E,
420 1fW Mu/llo Avon".
~, COrYell/s, Oro9OO 97330
I'tl. 541,91:J~Z20
Fax 541.753.0938
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RE: SUSGR/\DE.EVALUATION
LOT 10 "RODRIGUEZ) . KING HENRY'S COURT SUBDIVISION
1880 HAYDEN BRIDGE
SPRINGF.IELD, OREGON
'The site excavation wall obaerved by 8 geotechnical engineer an June 29, 2007 to. assess the aubgr8de
condition of the residential building pad. The flat bulding area has been excavated 1 (}. to 16.lnchea to.
remove topsoil si'l(j expose a native clayey ailt sutlQrade. The 8Ubgrade 1166 been covered with 8
geo.texliklfabric <>ver!lin with 6:.10. a.inchfl8.of <:<>mfl8Cled 3/4".Oa\XIregate
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Hand'prcbing of tl'1e subgrade.lndi08te.the lIubgraoe Is meist. firm and consistent The aggregate has
been compacted /0. lit leeat 95%'.~! tha":l8talials maximum dry :tensity. The subgrade soilhsa a low to
moderate shrini<isw~1I potential, and soH moieture fluctuat,ons are mitigated by the aggregate cover.
FoundaU.;lnuheJld be poured end beck1'illedln atimel) manner
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The soil subgrad. and alilgregate is suitable for III ccnventiona' perimeler'lItyle foundation, and the
allowable soil bIIlfing capacity i. 1,500 pel. Differential s8lllamlllnl$ ar. expecteo to be less than 11+
inch over,apena <,r 15.1asl It is recommended lhatll1e rootlnlls bs reinforceo With at least two (2\ No.. 4
aleeofreinforClng :>ars. Building perimeter grades shall be siaped lIIWay from the foundation, a~d 8unllCe
water shall not bolOllowed to pond adjal:ent to the foundation,
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Sincerely,
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Ronald J. Demel<:, F.E,
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