HomeMy WebLinkAboutPermit Field Test & Inspection Report 2007-5-15
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K & A Engineering, Inc.
3327 Roanoke Ave., Eugene, OR 97408
(541) 684-9399 Voice
(541) 684-9358 FAX
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l'nginel'ring
May 15, 2007
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Project: 151.06
Hayden Enterprises, inc,
2464 SW Glacier Drive #110
Redmond, OR 97756
Subject: Jasper Meadows subdivision--Lot 214
Springfield, OR
Foundation Soils
PURPOSE AND SCOPE
At your request, K & A Engineering, Inc. has completed a geotechnical investigation of the existing soils on the
subjectpLope[!y Our understRnding is that a wood-framed single-family residence supported bya cast-in-
place concretespreadJootingfoundatiDnispropos~Qfor goQ?t[ugJi.qn, on this site..
The purpose of our investigation was to determine the suitability of the soils for construction of the proposed
structure, and provide recommendations for construction of the foundation. The scope of our services is limited
to general suitability with respect to bearing capacity and expansive soils.
FOUNDATION PAD PREPARATION
The project site is located on a residential lot in the new "Jasper Meadows" subdivision. The lot is mostly level
and there are no apparent slope movement hazards.
Foundation preparation involved constructing a level foundation pad on native. undisturbed soils. This required
excavating and removing approximately 18 to 24-inch of loose organic silt from the foundation pad area. After
the excavation and removal of these soils, approximately 12-inches of 3;4-inch minus dense graded crushed
aggregate was placed and compacted over 3.0 to 4.0-feet of 8-inch minus "pit run" fill. This served to provide
a uniform surface for footing construction. The fill materials were placed in maximum lifts of 12-inches and
compacted using a Vibratory steel drum roller.
We tested the in-place density of the crushed aggr~gate fill and have determined that the average dry density
exceeds 95% of maximum as deten;lined by ASTM 0698. The field test results are attached to this report.
K & A Engineering, Inc.
SUMMARY AND RECOMMENDATIONS
The project site, as prepared, is suitable to support the proposed foundations, We recommend a design
allowable bearing capacity of 2,500-pounds per square fool.
The soils present a moderate.shrink/swell hazard, Foundation loads should bear on undisturbed native silts a
minimum depth of 36-inches below final grade around the perimeter foundation. The prepared foundation pad
meets these recommendations, .
Final grading around the foundation pad should raise the grade above the foundation using native or imported
silts and should slope away from the foundation. '
. .
We recommend approval of the foundation pad, as constructed, by the building official.
Thank you for the opportunity to be of service. Please call us if you have questions or need further assistance.
Respectfully,
Steve Schultz, E.I.T.
K & A Engineering, Inc,
EXPIRES 'IDEe '30 200e
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. Revised on 11/19/07 due to the platted lot numbers being different than the .design lot numbers.
Client: Hayden Enterprises Jasper Meadows-Lot 214, Springfield, OR
Project: 151.06
Page 2 of 2
May 15, 2007
Density of Soil and Soil-Aggregates In-Place
ASTM 02922 and 03017
Proiect: 151.06
Site Address: Jasper Meadows--Lot 214
Permit No:
Date: 15/9/2007
Density TeslType1: DT-6
Dperator: SS
Material Type:~ 3/4" (-) from Springfield Quarry
Maximum Dry Denstiy, pcf 128,0
Standardization and Reference Check A Density
(Standard Deviations) (S.D.) 1.71
IA Moisture, I
(S.D:)
Moist Dry
Density, Density, Water Compaction,
Test No. pcl pcl Content, % % Remarks
1 137.7 129,5 I 6.3 101.2%
2 126.7 119.9 I 5.7 93.6%
3 132.1 124.7 5.9 97,5%
I
Average:
Std. Dev.:
I
97.4%
3.78%
.
1.53
I
. I
I
I
I
I
I
I
I
1 Direct Transmission (DT) (specify depth, in.) or Air Gap Backscatter (AGB) (specifiy(T)ouchable or (U)ntouchable
mode
Test performed using Seaman Nuclear Corp model C-300, SN 21113
Client: Hayden Enterprises. Inc.
projW: 151.06
K & A Engineering, Inc.
11/19/2007
B - Backfill Checklist
Backfill
Backfill
Backfill'
Backfill
Backfill
Backfill
Backfill
Backfill
Backfill
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202
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206
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210
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214
216
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Quqlity Insp>ection Template
Proper Drainage .has been achieved
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..' ~ . ;\G~r~ge;has proper compaction
Property Pins are staked
>/F6L~HatiOn v'erits are clean
Foundation has been inspected for damage
{',+2&n;qitp~~~have.been compacted
Concrete prep is complete
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"iDllstG6ntrol in place
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FRAMER PACK COMPLETE plans, options...
P\J\\ b~h~i fov~...h.cr"\~rol"'\ bcic.k
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Printed: 11/9/2007
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11/20/2006 .QualitylnspectionReport.rpt Report Layout an:d Design Copyright 2006 CPS (916) 635-3487
A - Pre Start List
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Page 1 of 1
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Printed: 11/9/2007
Quality Inspection Template
Lot signage in place
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Pre Release Check List
',:Stake Lot Scheduled
Project Manager
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.'. ',.'f?I<3,ns ,have been submitted to City (with c6rrecr6Rti9n:;.ei,2j~St:rv1~"ri!lg~r.. '.
Push-out has been scheduled Project Manager
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Property Pins have been properly staked Project Manager
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Dust Control in place Project Manager
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11/20/2006 QualitylnspectionReport:rpt: Report Layout and Design Copyright 2006 CPS (916) 635-3487