HomeMy WebLinkAboutTract Map 9833-3 Lot 12 Compaction Results Rough Grading
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ENVIRONMENTAL & GEOTECHNICAL ENGINEERING NETWORK
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GEOTECHNICAL REPORT AND COMPACTION TEST RESULTS
ROUGH GRADING OPERATIONS
Vasant Residence
Lot 12 of Tract 9833-3, 43775 Calle De Velardo
City of T emecula, County of Riverside, California
LD 99-112GR
Project Number: T1850-C
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November 4, 1999
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Prepared for:
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Krishna Vasant
clo Peter-Built Homes
" 30647 Calle Pin a Colada
Temecula, California 92591
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Krishna Vasant
clo Peter-Built Homes
Project Number. T1850-C
TABLE OF CONTENTS
SECTION NUMBER AND TITLE
PAGE
1.0 SITE/PROJECT DESCRIPTION AND LOCATION ......................................................................1
1.1 PROJECT LOCATION ............. ....... ..... ............ ................................... ..... ................ ........ .....1
1.2 PROJECT DESCRIPTION ........... .... .......... ................................ ... ... ..... .................... .......... ...1
1.3 SITE DESCRIPTION ... .... ............ .... ...... ... ... .... ... ... .................. .... ........ ................ .... ........ .....2
2.0 SCOPE OF WORK ..............................................................................................................2
2.1 TIME OF GRADING .......... .......... .... ...... .......... ...... ........ .......... ...... ...... .... ........ .... ............ .....2
2.1 CONTRACTOR AND EQUIPMENT.. ..... ..... ... .......... ... ... .......... ..... ... ........ ........ ........ .... ......... ....2
2.2 GRADING OPERATIONS......................................................................................................2
3.0 TESTING ...........................................................................................................................3
3.1 FIELD TESTING PROCEDURES .. ..... ........ ... ............. .... .... ....... ... ...... .............. ...... .... ........ .....3
3.1.1 LABORATORY TESTING.....................,.........................................................3
3.1.2 MOISTURE-DENSITY RELATIONSHIP TEST ....................................................3
3.2 EXPANSION INDEX TEST ....... .... .... ..... ................... .... .... .......... ...... ............ ..... ... .... ........ .....3
4.0 EARTH MATERIALS ...........................................................................................................3
5.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................................3
5.1 GENERAL ......... .... ..... ..... .............. .......... .... ... ... ... ............... ... ... ........ ...... ... ... .......... ...... ...4
6.0 CLOSURE ..................,......................................................................................................4
ApPENDIX
TEST RESULTS
DRAWINGS
EnGEN Corporation
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Corporation
. Soil Ellgineeringand ConsultillgSePliceS. Engil1€eringGeology. CompaclionTestlng
-Inspections- ConslruclionMaterialsTesting-laboratoryTesling. PercolalionTesling
. Geology. Water Resource Studies . Phase I & II Environmental Site Assessments
ENVIRONMENTAL & GEOTECHNICAL ENGINEERING NETWORK
November 4, 1999
Krishna Vasant
c/o Peter-Built Homes
30647 Calle Pina Colada
Temecula, California 92591
(909) 676-2056
Attention:
Mr. Peter Pacitto
Regarding:
GEOTECHNICAL REPORT AND COMPACTION TEST RESULTS
ROUGH GRADING OPERATIONS
Vasant Residence
Lot 12 of Tract 9833-3, 43775 Calle De Velardo
City of Temecula, County of Riverside, California
LD 99-112GR
Project Number: T1850-C
References:
EnGEN Corporation, Limited Geotechnical Study, Proposed Single Family
Residence, Lot 12 of Tract 9833-3, 43775 Calle de Velardo, City of
Temecula, County of Riverside, California, Project Number: T1850-LGS,
report dated September 10, 1999.
Manning Engineering, Grading Plan, Lot 12 of Tract 9833-3, Assessors
Parcel Number: 945-150-012, plans undated.
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Dear Mr. Pacitto:
According to your request and signed authorization, EnGEN Corporation has performed field
observations, sampling, and in-place density testing at the above referenced site. Submitted, herein,
are the test results and the supporting field and laboratory data.
1.0
SITE/PROJECT DESCRIPTION AND LOCATION
1.1
PROJECT LOCATION
The subject site consists of 3.0 acres, located on the west side of Calle de Velardo in the
City of Temecula, County of Riverside, California.
1.2
PROJECT DESCRIPTION
Prior to gradingoperation~topographY and surface conditions of the site were moderately
sloping with surface drainage to the northwest at a gradient of less than 15 percent.
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1.3
2.0
2.1
2.1
2.2
Krishna Vasant
clo Peter-Built Homes
Project Number. T1850-C
November 1999
Page 2
SITE DESCRIPTION
It is understood that the subject site is to be developed with a single family residence with
slab-on-grade concrete floors.
SCOPE OF WORK
TIME OF GRADING
This report represents geotechnical observations and testing during the construction
operations from October 1, 1999 through October 6, 1999.
CONTRACTOR AND EQUIPMENT
The grading operations were performed by "One Tractor Doze It AU" through the use of
one (1) J.D. 850C track-mounted dozer.
GRADING OPERATIONS
Grading within the subject site consisted of a cut/fill operation. . Grasses and weeds were
removed prior to fill placement. Fill material was generated from the eastern portions of the
site, and used to bring the western and northeastern portions of the site to finish grade
elevation. Removal of alluvium, slopewash, etc., was performed to a depth of 3.0-feet
below original elevation. Over-excavated earth material was stockpiled and later used as
fill. Bottoms were observed, probed and found to be into competent bedrock by a
representative of this firm. Keying and benching into competent bedrock was observed
during the grading operations. Over-excavation was performed in the cut portion of the
building pad to a depth of 3.0-feet below finish grade elevation and to a distance of 5.D-feet
outside the proposed structure. The exposed bottoms were scarified and moisture
conditioned to a depth of 12-inches then compacted to 90 percent. Fill was placed in lens
thicknesses of 4 to 6-inches, thoroughly moisture conditioned to near optimum moisture
content, then compacted to a minimum of 90 percent relative compaction. Moisture
conditioning of the on-site soils was performed during the compaction process, through the
use of a water hose attached to a fire hydrant. The pad area was generally graded to the
elevations noted on the Grading Plan. However, the actual pad location, dimensions,
elevations, slope locations and inclinations, etc. were surveyed and staked by others and
should be verified by the Project Civil Engineer.
EnGEN Corporation
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Krishna Vasant
c/o Peter-Built Homes
Project Number. T1850-C
November 1999
Page 3
3.0 TESTING
3.1 FIELD TESTING PROCEDURES
Field in-place density and moisture content testing were performed in general accordance
with ASTM-D-2922-81 (90) and ASTM-D-3017-88 procedures for determining in-place
density and moisture content, respectively, using nuclear gauge equipment. Relative
compaction test results were within the 90 percent required for all material placed and
compacted. Test results are presented in the Appendix of this report. Fill depths and test
locations (by station numbers when applicable) were determined from review of the
referenced grading plans.
3.1.1 LABORATORY TESTING
The following laboratory tests were performed as part of our services during the grading of
the subject site. The test results are presented in the Appendix of this report.
3.1.2 MOISTURE-DENSITY RELATIONSHIP TEST
Maximum dry density - optimum moisture content relationship tests were conducted on
samples of the materials used as fill. The tests were performed in general accordance with
ASTM D1557-91 procedures. The test results are presented in the Appendix (Summary of
Optimum Moisture Content I Maximum Dry Density Relationship Test Results).
3.2 EXPANSION INDEX TEST
A soil sample was obtained for expansion potential testing from the building pad area upon
completion of rough grading of the subject site. The expansion test procedure utilized was
the Uniform Building Code Test Designation 18-2. The material tested consisted of silty
sand, which has an Expansion Index of O. This soil is classified as having a very low
expansion potential. The results are presented in the Summary of Expansion Index
Results in the Appendix of this report.
4.0 EARTH MATERIALS
The natural earth materials encountered on-site, generally consisted of silty sand, brown.
5.0 CONCLUSIONS AND RECOMMENDATIONS
No conditions were encountered which would cause a change in the previously provided
design and construction recommendations. As a result, design and construction should
adhere to the recommendations provided in the Referenced No. 1 Limited Geotechnical
Study.
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EnGEN Corporation ?
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Krishna Vasant
c/o Peter-Built Homes
Project Number: T1850-C
November 1999
Page 4
5.1 GENERAL
Based on the observations and tests performed during grading, the subject site in the
areas noted has been completed in accordance with the the Referenced No. 1
Geotechnical report, or as amended in the field based on conditions encountered, the
project plans, and the Grading Code of the City of Temecula. The graded site in the areas
noted as graded is determined to be adequate for the support of a typical residential
development. Any subsequent grading for development of the subject property should be
performed under engineering observation and testing performed by EnGEN Corporation.
Subsequent grading includes, but is not limited to, any additional fill placement and
excavation of temporary and permanent cut and fill slopes. In addition, EnGEN
Corporation should observe all foundation excavations. Observations should be made
prior to installation of concrete forms and/or reinforcing steel so as to verify andlor modify,
if necessary, the conclusions and recommendations in this report. Observations of
overexcavation cuts, fill placement, finish grading, utility or other trench backfill, pavement
subgrade and base course, retaining wall backfill, slab presaturation, or other earth work
completed for the development of subject site should be performed by EnGEN
Corporation. If any of the observations and testing to verify site geotechnical conditions
are not performed by EnGEN Corporation, liability for the safety and performance of the
development is limited to the actual portions of the project observed and/or tested by
EnGEN Corporation.
6.0 CLOSURE
This report has ,been prepared for use by the parties or project named or described above.
It mayor may not contain sufficient information for other parties or purposes. The findings
and recommendations expressed in this report are based on field and laboratory testing
performed during the rough grading operation and on generally accepted engineering
practices and principles. No further warranties are implied or expressed beyond the direct
representations of this report.
EnGEN Corporation ~
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Krishna Vasant
c/o Peter-Built Homes
Project Number. T1850-C
November 1999
Page 5
Thank you for the opportunity to provide these services. If you should have any questions
regarding this report, please do not hesitate to contact this office at your convenience.
Respectfully submitted,
EnGEN Corporation
(JIM_ ~ ALA-
'--{f::::n D. Gardn;;7~
Field Operations Manager
JDG/OB:ch
Distribution: (4) Addressee
FILE: EnGEN/Reporting/CfT1850C Vasant Residence, care of Peter-Built Homes
EnGEN Corporation
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APPENDIX
FIELD TEST RESULTS
(SUMMARY OF FIELD IN-PLACE DENSITY TEST RESULTS)
(NUCLEAR GAUGE TEST METHOD)
Krishna Vasant
c/o Peter-Built Homes
Project Number. T1850-C
Appendix Page 1
Iil'est
No.
Test
Date
(1999)
il'est Locations
Depth
Elev.
(Fil')
Max
Density
(PCF)
Moisture
Content
(%)
Dry
Density
(PCF)
Soil
il'ype
1 1 10-1 West Facing Fill 130' A1 123.8 14.4 105.9
2 10-1 Retest of #1 130' A1 123.8 12.2 100.9
I~ 10-1 Retest of #2 130' A1 123.8 11.6 109.9
10-1 Retest of #3 130' A1 123.8 12.8 114.2
I~ 10-1 Slope Adjacent Pad 132' A1 123.8 12.2 116.5
10-1 Slope Adjacent Pad 132' A1 123.8 12.8 114.7
7 10-1 Slope Adjacent Pad 134' A1 123.8 11.9 114.3
I: 10-4 West Slope Fill Area 136' A1 123.8 6.0 113.2
10-4 West Slope Fill Area 137' A1 123.8 7.1 111.8
! 10 10-4 West Slope Fill Area 139' A1 123.8 9.0 111.3
111 10-6 West Slope Fill Area 141' A1 123.8 10.0 111.7
12 10-6 West Slope Fill Area 143' A1 123.8 10.6 116.8
113 10-6 West Slope Fill Area 145' A1 123.8 11.1 117.0
14 10-6 Building Area F.G. A1 123.8 11.0 111.7
15 10-6 Building Area 145.5' A1 123.8 6.9 114.3
116 10-6 Building Area 146.5' A1 123.8 10.3 111.4
I (F.G.) Indicates Finish Grade.
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Relative
Compaction
(%)
Required
Compaction
(%)
85.7 90
81.7 90
88.9 90
92.6 90
94.3 90
92.8 90
92.5 90
91.4 90
90.3 90
90.0 90
90.2 90
94.4 90
94.5 90
90.2 90
92.3 90
90.0 90
EnGEN Corporation ~
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Krishna Vasant
c/o Peter-Built Homes
Project Number. T1850-C
Appendix Page 2
SUMMARY OF OPTIMUM MOISTURE CON1TENT I
MAXIMUM DRY DENSITY RELATIONSHIP TEST RESULTS
ASTM 01557-91
Optimum
Soil Maximum Moisture
Soil Description Dry Density Content
Type (USCS Symbol) (PCF) (%)
A1 Silty Fine Sand, Brown (SM) 123.8 10.0
SUMMARY OF ExPANSION INDEX TEST RESULTS
UBe 18-2
Soil
Type
Moisture
Condition Before
Test (%)
Expansion
Index
Moisture
Condition After
Test (%)
Depth
(FT)
Dry Density
(PCF)
111.4
A1
1.5
8.1
15.1
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EnGEN Corporation
q
I Krishna Vasant
c/o Peter-Built Homes
Project Number. T1850-C
I Appendix Page 3
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DRAWINGS
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EnGEN Corporation \0
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