HomeMy WebLinkAboutPermit Field Test & Inspection Report 2007-6-21
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K & A Engineering, Inc.
3327 Roanoke Ave., Eugene, OR 97408
(541) 684-9399 Voice
(541) 684-9358 FAX
engineering
June 21, 2007
Project: 151.06
Hayden Enterpnses, Inc
2464 SW Glacier Dnve #11 Q
Redmond, OR 97756
Subject' Jasper Meadows subdivlslon--Lot 263 57'17 PVNl"{''C
Spnngfleld, OR
Foundation SOils
PURPOSE AND SCOPE
At your request, K & A Engineering, Inc has completed a geotechnical investigation of the eXisting soils on the
subject property Our understanding IS that a wood-framed single-family residence supported by a cast-in-
place concrete spread footing foundation is proposed for construction 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 beanng capacity and expansive soils
FOUNDATION PAD PREPARATION
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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
FoundatlOn-preparation Involved constructing a level foundation pad on native undisturbed sOils ThiS required
excavating and removing unsuitable soils from the foundation pad area After the excavation and removal of
these soils, approximately 1 Q-foot of %-Inch minus dense graded crushed aggregate was placed and
compacted over 8-lnch minus "pit run" fill ThiS served to provide a Uniform surface for footmg construction
The fill matenals were placed and then compacted uSing a vibratory steel drum roller
We tested the In-place denSity of the crushed aggregate fill and have determined that the average dry denSity
exceeds 95% of maximum as determined by ASTM 0698, The field test results are attached to thiS report
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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 foot
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 Engrneerlng, Inc
EXPIRES DEe' 3 0 2~O~
Client Hayden Enterprises Jasper Meadows-Lot 263, Springfield, OR
Project' 151 06
Page 2 of 2
June 21, 2007
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Density of SOIl and Soil-Aggregates In-Place
ASTM 02922 and 03017
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I Date: 5/16/2007
Density Test Type 1: DT-6
I Operator: SS
! Material Type: 3/4" (-) from Spnngfleld Quarry
Maximu~ Dry Denstiy, pcf 1280
Standardization andl Reference Check !J. Density
(Standard Deviations) (S D.)
Project: 151 06
Site Address: Jasper Meadows--Lot 263
Permit No:
1,65
!J. Moisture,
.(S,D:)
1.49
;MOIst Dry
Density, Density, Water Compaction,
Test No. I pcf pcf Content, % % Remarks
1 13~ 0 1232 63 96.3%
2 1313 9 1260 63 98.4%
3 1313 8 125,2 69 978%
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Average 97 5%
Std Dev, 1,10%
1 Direct Transmission (DT) (specify depth, In) or Air Gap Backscatter (AGB) (speclfly(T)ouchable or (U)ntouchable
mode I
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Test performed uSlrg Seaman Nuclear Corp model C-300, SN 21113
Client Hayden Enterpnses, Inc
Project 151 06
K & A Engmeering, Inc,
11/19/2007