HomeMy WebLinkAboutPermit Field Test & Inspection Report 2007-5-15
Jun. ~~, ~UUI 1:21PM
No. 1861 P 2/16
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K & A Engineering, Inc,
3327 Roanoke Ave" Eugene, OR 97408
(541) 684-9399 Voice
(541) 684-9358 FAX
engineering
. May 15, 2007
Hayden Enterprises, Inc,
2464 SW Glacier Drive #110
RedmOnd, OR 97756
( b3~ Project: 151.06
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Subject: Jasper Meadows subdivision--Lot 211
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
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 sne,
The purpose of our investigation was to detennine 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 sne 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 prepatation involved constructing a level foundation pad on native undisturbed soils, This required
excavating and removing1PoroximatelyJ2.to 2~:inches.otloQseJJrganic,silt.andundocumentedjULfrom.tho
foundation pad area. Aflerthe excavation and removal of these soils, approximately 12-inches of "/.-inch minus
dense graded crushed aggregate was plaCed and compacted over 3,0 to 5,O-feet of 8-inch minus "pit run' fill.
This served to provide a uniform surface for footing construction, The fill materials 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 D698, The field test results are attached to this report,
Jun,ll, lUUI 1 :lIPM
No. 1861 P 3/16
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K & A Engineering, Inc.
SUMMARY AND RECDMMENDATIONS
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 shrinlqswell hazard. Foundation loads should bear on undisturbed native silts a
minimum depth of 36-inches below final grade around the perimefer 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,
WIRES
Client: Hayden Enterprises Jasper Meadows-Lot 211, Springfield, OR
Project: 151.06
~age 2 of 2
June 21 , 2007
Jun.22 2007 121PM
No.1861 p, 4/16
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Density of Soil and Soil-Aggregates In-Place
ASTM D2922 and D3017
I Proiect: 151.06
1 Site Address: Jasper MeadowsnLot 211
I Permit No:
1 Date: 5/16/2007
1 oensityTeSlTyee': 01.6
I Operator: SS
I Material 1ype:13/4" (-) trom Springfield Quany
I Maximum Dry DenslIy, pCfl1280
'Standardization and ReferencB Chec~d. Density
(Standard Deviationsll (S,D,) 1,65
1.1 Moisture, I
(S,D:)
1.49
. Moist' Drv
Density, Density, Waler Compaction,
Test No, pcf pcl Content, % %
1 137,6 129.3 6.4 I 101.0% I
2 139.8 1298 7.7 I 101.4% I
3 136.7 130,3 4.9 I 101,8% 1
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Average: 101.4%
SId, Oev.: 0,39%
Remarks
1
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1 Direct Transmission (OT) (specify depth, in,) or Air Gap Backscatter (AGB) (specitiy(T)ouchable or (U)nlouchable
mode
T esl perlormed using Seaman Nuclear Corp model C-300, SN 21113
Client: Hayden Enterprises, Inc.
Project: 151.06
K & A Engineering, Inc,
6/21/2007