HomeMy WebLinkAboutPermit Field Test & Inspection Report 2001-11-1
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LAND SURvEYING. CONSTRUCTlON SUPERVISION. WATER RIGHTS EXAMINATiONS
CIVIL ENGINeERING. GEOTECHNICAL. ENVIRONMENTAL
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November 1, 2001
Grsssroots Development
clo Account Abilities
P.O Box 2726
Eugene, Oregon 97402
RE: Subgrade Evaluation
Levi Landing - Bagget Residence
'? '~m sf ~ 68715 Simion Drive
\!Springfield, Oregon
On October 31. 2001, Ii representative from Ford..Ness-Fassbenqer, lnc, observed and hand-
probed the building pad sub;rade on the above referenced residential building lot to auess the
subgrade beanng capacity and shnnklswell potential of the soil.
let 52 - Permit No.
The building pad had been over-excavatecl to remove surface vegetation and to expose a
clayey silt/silty clay subgrade soil with traces of ba,...run gravels, The pad appears to have been
eonstnJded atop less than 0.5- to 1-foot of fill. The soil subgrad(~ had a moderate shnnklswell
potential and is sUitable for an allowable bearing ca~acjty up to 1,500 psf. We recommend that
'\ the subgrade be covered with approximately 2 to 4 inches of compacted crushed aggregate to
protect the subgrade during wet weather construction and stabIlize the soil mOisture content,
thereby mitigating the potential for shnnklswell of the soli,
The building pad Is suitable for conventional residentIal construction with penmeter spread
footIngs.
We recommend the landscape SOil slope to dIrect surface water away from all foundations, and
water should not pond adjacent to footings, Drainage from adjacent properties should be
directed away from the foundations. We allo recommend that perimeter footings be reinforced
with at least two No 4 steel reinforcing bars.
116 Hwy. 99 N., Stlltl! 100. P.O, BOll 2.2735 . Eugene, OR 9740:1. (1l.,1) 344-1852 I Fa)( (541) 344-9913
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pH Engineering, Ine.
POBox 42237
Eugene, OR 97404
5416892285
FAX 541.345 0200
phenglOeenng@qwsst net
November 12, 2001
Jack Fowler
GrassRoots
Faxed to: 98&-9571
Number of Pages 2
Re SOIl Evaluation Report, Lot 52 Suneon, LeVI Landmg, Spnngfield, Oregon
Dear Jack'
On November 5, 2001, I conducted a slle ViSit at the above address Because the site is
located In a floodplain, large amounts of fill matenal have been Imported onto the Site, Including
70. gravel and off~srte soli It was difficult to determane the preCise thickness of the fill layer, but I
understand it may be as much as 5 feet thick m areas The attached report Inch,Jdea my
observations and recommendations,
If you have any questions, please feel free to calt me at 689-2285,
Sincerely,
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Pamela J Pulham, P E
Pf'flsldent, pH Engineering, Inc.
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LANOSURVEYfNG . CONSTRUCTION SUPERXlsrON II WATER ~!,CHiS EXAMIli'l^fl(jN~
CIVIl:. ENGIN-I:ERING ."G1:0TECHNICAl . ENVIRONMENTAL
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November 13, 2001
Grassroots Development
c/o Account Abilities 1/
P O. Box 2726
Eugene, O'~~""_ 97402
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R~: COl1;.'paction Report
Levi=Landing - Bagget Residence
'(Lot 52 _1~87e Simion Drive
Sptingfle1d. Oregon
Permit No, 01..01209-01
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On November 10, 2001. field denSIty testing was performed on the above referencect residential
bUII~'tlg lot to assess compaction of the ClUShed aggregate placed over the subgrade An
approximately 4-Jnch thick layer of *'.0 crushed aggregate from Spnngfield Quarry was placed
~er the subgrade and compacted The relatively thin thickness of the a.:tf.""ate caused
;S~J.8de m~rfe.~. ...0' and did not aHow for acaJrate compaction testing WIth a standard nuclear
denSOmeter Therefore. a simple weight to volume calculation was perform~ on a dove
sample of the aggregate, and compaction was determined to be ut least 95% of its maximum
dry density of 133 5 per as determined by AASHTO Method T -99, provided by Spnngfield
Quarry\. The subgr~~ Jilnd compacted fill on thIS Jot IS suitable for "'~ . "eritiDnal res.dentJaJ
" cous~;tion \,
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116 Hwy. 99 N., SUIte 100.P.,O. BOx22735. Eugen~, OR97402. (5411344-1852. Fax(S41) 344-'923
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Soli Evaluation Report
Location: Levi Landing. Simeon Dove. Lot 52
Client Name: Baggltt (Grassroots clo Jack Fowler) Client Phone 521-7006 (Jack)
Chent Address: Fax f800rl to Jack at 988-9571
Date of S.. Vi'I~ 11/05101 Purpose of Evaluation: Shrink ~I for foundaflnn
On Site Observations
General Description of Si~ cleared grevlouslv. streets DJp.t;Ant ACCQ!Q!op to contractor -.Be wa~ fined
previously With 1-2 feet of 7" minus, then 1-2 feet of soil fill Presence of large rock made penetration WIth SQiI
probe Impossible FlU placed because site was in floodplain The sod analyzed was fdl, natIVe soli ,"accessible
Hydrologic Conditions SOil damp at time of VISIt. rain previous day. some pondlOQ
Expected SOil pet NItCS or other source New'......1II
Soli COlor: dark brown, no mottles, some small rocks (less than 2 em), SOil under1am by r- gravel
Soli St.IC:lunesa Cfan. ~v StmWSSt SOIl ~eres to ftnoers. stretches little on s8naratlOn of finoers
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Soil Plasticity: Shahtlv Dlastlc (SPl, 6mm roll suoports Itself. 4 mm does not suooort dself
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Laboratory Observations
Sample 1 Sample 2
Layer Bottom Top fhlckness Percent Bo"om Top Thickness I Percent
I Sand 0 2.0 20 54 0 7 7 ' 53
Slit 20 34 14 38 6 1 1 5 39
_Clav_ 34 37 I 3 8 1 1 13 I 2 7
Soil Textural c.asa: SandY C1a'Lb2lm
ConclusIOns and Recommendations' The ~e has Is[g.e (]"- rock over native ~Qll followed b~ SOIl fill matenal.
8S deICnbed abOVe Recommend a minimum of ew of hlQhly compacted gravel pnor to foundatIOn form
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Plmela J Pulliam, P E ,
PfRlldent, pH Englneenng, lno
Expires 12131/02
Oat. Pr$pared 11/10101
pH EngIneering, loe.
POBox 42237
Eugene. OR 97404
541 689 2285
541 345 0200 fax
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