HomeMy WebLinkAboutTract Map 9833-1 Lot 15 Geotechnical Report & Compaction Results
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GEOTECHNICAL REPORT AND COMPACTION TEST RESULTS
ROUGH GRADING OPERATIONS
Teschler Residence
Assessor's Parcel Number: 926-221-013
Lot 15 otTract 9833-1
37120 Pio Pi co
City of Temecula, County of Riverside, California
Project Number: T2060-C
October 9, 2000
Prepared for:
Mike and Sandy Teschler
42200 Danby Street
'Temecula, California 92592
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Mike and Sandy Teschler
Project Number: T2060-C
TABLE OF CONTENTS
SECTION NUMBER AND TITLE PAGE
1.0 SITE/PROJECT DESCRIPTION AND LOCATION.......................................................................1
1.1 PROJECT LOCATION .......... ...............................................................................................1
1.2 SITE DESCRiPTION........................... ...... .......... ...... .......... .... ... ................ ..... .... ...... ....... ....1
1.3 PROJECT DESCRiPTION........................................................ .............. ...... .................. .......2
2.0 SCOPE OF WORK .................................................................................................. ............2
2.1 TIME OF GRADING.. ..........................................................................................................2
2.2 CONTRACTOR AND EQUIPMENT ................................................................ ........................2
2.3 GRADING OPERATiONS ........................................ .............. .........................2
3.0 TESTING ...... ............ ...... ... ........................... ............................................. ........................ 3
3.1 FIELD TESTING PROCEDURES ....... ....................................................................................3
3.2 LABORATORY TESTING......................................................................................................3
3.2.1 MOISTURE-DENSITY RELATIONSHIP TEST ....................................................3
3.2.2 EXPANSION INDEX TEST .............................................................................3
4.0 EARTH MATERIALS ............... ...........................:...:............................................................3
5.0 CONCLUSIONS AND RECOMMENDATIONS ............................................................................3
5.0 GENERAL......................... ...,...................................................................................... .....4
6.0 CLOSURE. ................ ................ ................................ ........................................................4
ApPENDIX
TEST RESULTS
DRAWINGS
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ENVIRONMENTAL & GEOTECHNICAL ENGINEERING NETWORK
October 9, 2000
Mike and Sandy Teschler
42200 Danby Street
Temecula, California 92592
(909) 695-1515 I FAX (909) 694-0126
Regarding:
GEOTECHNICAL REPORT AND COMPACTION TEST RESULTS
ROUGH GRADING OPERATIONS
Teschler Residence
Assessor's Parcel Number: 926-221-013
Lot 15 atTract 9833-1
37120 Pia Pica
City of Temecula, County of Riverside, California
Project Number: T2060-C
2.
EnGEN Corporation, Limited Geotechnical Study, Proposed Single Family
Residence, 37120 Pio Pico, Lot 15 of Tract 9833-1, City of Temecula,
County of Riverside, California, Project Number: T2060-LGS, report dated
May 9, 2000.
Manning Engineering, Grading Plan Lot 15 of Tract 9833-1, APN 926-221-
013, plan dated April 12, 2000.
References: 1.
Dear Mr. & Mrs. Teschler:
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 approximately 2.7 acres, located at 37120 Pio Pi co in the City
of Temecula, County of Riverside, California.
1.2 SITE DESCRIPTION
According to the Referenced No. 1 report, this site has been previously graded. Prior to
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current grading operations, "topography and surface conditions of the site were gently
sloping with surface drainage to the southeast at a gradient of less than 13 percent.
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Mike and Sandy Teschler
Project Number: T2060-C
October 2000
Page 2
1.3 PROJECT DESCRIPTION
It is understood that the subject site is to be developed with a single family residence, and
separate detached garage with slab-on-grade concrete floors, supported on conventional
continuous and pier footings. The remainder of the site will consist of a driveway and
associated hardscape and landscape improvements.
2.0 SCOPE OF WORK
2.1 TIME OF GRADING
This report represents geotechnical observations and testing during the construction
operations from September 6, 2000 through September 26, 2000.
2.2 CONTRACTOR AND EQUIPMENT
The grading operations were performed by S & K Grading through the use of one (1) CAT
613 scraper, one (1 ) CAT D6 dozer, one (1 ) CAT D8 dozer and one (1) water truck.
2.3 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 existing driveway area
and western building pad p.o~rtions of :he site, and used to bring the proposed driveway and
eastern building pad portions of the site to finish grade elevation. Removal of alluvium,
slopewash, etc., was performed to a depth of 3 to 6-feet below original elevation. Bottoms
were observed, probed and found to be into competent soil by a representative of this firm.
Keying and benching into competent soil was observed during the grading operations.
Overexcavation was performed in the cut portion of the building pads to a depth of 3-feet
below finish grade elevation and to a distance of 5-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 6 to 8-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 truck. 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 .3
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Mike and Sandy Teschler
Project Number: T2060-C
October 2000
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 tested, which is
an indication that the remainder of the fill placed has been properly compacted. Test
results are presented in the Appendix of this report. Fill depths and test locations were
determined from review of the referenced grading plans.
3.2 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.
3.2.1 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 ContenfrMaximurrl Dry Density Relationship Test Results).
3.2.2 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 brown
silty sand, which has an Expansion Index of 1. This soil is classified as having a very low
expansion potential. The results are presented in the Appendix (Summary of Expansion
Index Test Results).
4.0 EARTH MATERIALS
The natural earth materials encountered on-site generally consisted of brown silty sand.
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.
EnGEN Corporation ~
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Mike and Sandy Tesch/er
Project Number: T2060-C
October 2000
Page 4
5.0 GENERAL
Based on the observations and tests performed during grading, the subject site, in the
areas noted as test locations, has been completed in accordance with the Referenced No.
1 report, 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 andlor 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 -:s-
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Mike and Sandy Teschler
Project Number: T2060-C
October 2000
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,
2~;~
Supervising Technician
SRW/OB:rr
Distribution: (4) Addressee
FilE: EnGEN/ReportinglT2060-C Teschler, Rough Grading
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Os orn ratene, 162
Princip Geotechnical Engineer
Expi s 09-30-01
EnGEN Corporation "
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Mike and Sandy Teschler
Project Number: T2060-C
Appendix Page 1
APPENDIX:
TEST RESULTS
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EnGEN Corporation 1
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Mike and Sandy Teschler
Project Number: T2060-C
Appendix Page 2
FIELD TEST RESULTS
(Summary of Field In-Place Density Test Results)
(Nuclear Gauge Test Method)
(5. G.) = Subgrade / (F. G.) = Finish Grade
Test Depth Soil Max Moisture Dry Relative Required
Test Date Test Locations Elevation Type Density Content Density Compaction Compaction
No. (2000) (FT) (PCF) ('!o) (PCF) ('!o) ('!o)
*A 09-07 Driveway Bottom 1098 A1 125.9 4.6 112.9 89.7% 85.0%
*B 09-07 Driveway Bottom 1098 A1 125.9 7.5 112.9 89.7% 85.0%
1 09-07 Driveway 1102 A1 125.9 7.2 118.7 94.3% 90.0%
2 09-07 Driveway 1102 A1 125.9 7.9 118.9 94.4% 90.0%
3 09-07 Driveway 1104 A1 125.9 14.4 118.5 94.1% 90.0%
4 09-07 Driveway 1104 A1 125.9 13.9 117.9 93.6% 90.0%
5 09-08 Driveway 1106 A1 125.9 8.7 114.8 91.2% 90.0%
6 09-08 Driveway 1106 A1 125.9 8.9 115.3 91.6% 90.0%
7 09-08 Driveway 1108 A1 125.9 7.8 113.9 90.5% 90.0%
8 09-08 Driveway 1108 A1 125.9 7.2 114.7 91.1% 90.0%
9 09-09 Driveway F.G. A1 125.9 7.6 115.0 91.3% 90.0%
10 09-14 Driveway 1107 A1 125.9 8.0 115.5 91.7% 90.0%
11 09-14 Driveway 1107 A1 125.9 8.8 ' 115.5 91.7% 90.0%
12 09-14 Driveway 1109 A1 125.9 7.0 114.2 90.7% 90.0%
13 09-14 Driveway 1109 A1 125.9 8.2 115.2 91.5% 90.0%
14 09-14 Turn Around 1107 A1 125.9 9.5 118.6 94.2% 90.0%
15 09-14 Turn Around 1107 A1 125.9 8.7 119.6 95.0% 90.0%
*C 09-14 Keyway Bottom 1111 A1 125.9 5.1 108.7 86.3% 85.0%
16 09-14 Keyway Fill 1113 A1 125.9 8.8 116.7 92.7% 90.0%
17 09-14 Keyway Fill 1113 A1 125.9 8.6 114.2 90.7% 90.0%
18 09-15 Fill Slope 1115 A1 125.9 8.7 115.0 91.3% 90.0%
19 09-15 Fill Slope 1115 A1 125.9 8.6 114.3 90.8% 90.0%
20 09-18 Fill Slope 1112 A1 125.9 11.6 114.2 90.7% 90.0%
21 09-18 Fill Slope 1110 A1 125.9 9.3 114.1 90.6% 90.0%
22 09-19 Fill Slope 1117 A1 125.9 12.5 115.6 91.8% 90.0%
23 09-19 Fill Slope 1117 A1 125.9 13.7 114.9 91.3% 90.0%
24 09-19 Fill Slope 1119 A1 125.9 12.2 116.2 92.3% 90.0%
25 09-19 Fill Slope 1120 A1 125.9 11.9 114.8 91.2% 90.0%
26 09-19 Fill Slope 1120 A1 125.9 8.6 120.7 95.9% 90.0%
27 09-19 Fill Stope 1122 A1 125.9 8.0 119.2 94.7% 90.0%
28 09-19 Fill Slope 1124 A1 125.9 10.2 115.4 91.7% 90.0%
29 09-19 Fill Slope 1124 A1 125.9 6.5 114.6 91.0% 90.0%
30 09-19 Fill Slope 1124 A1 125.9 10.0 122.1 97.0% 90.0%
*Indicates undisturbed bottom tests.
EnGEN Corporation g
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Mike and Sandy Teschler
Project Number: T2060-C
Appendix Page 3
FIELD TEST RESULTS
(Summary of Field In-Place Density Test Results)
(Nuclear Gauge Test Method)
(5. G.) = 5ubgrade / (F. G.) = Finish Grade
Test De pth Soil Max Moisture Dry Relative Required
Test Date Test Locations Elevation Type Density Content Density Compaction Compaction
No. (2000) (FT) (PCF) (%) (PCF) (%) (%)
31 09-19 Fill Slope 1126 A1 125.9 10.4 117.3 93.2% 90.0%
32 09-25 House Pad Over-x 1128 A1 125.9 7.9 114.9 91.3% 90.0%
33 09-25 House Pad Over-x 1128 A1 125.9 7.9 115.1 91.4% 90.0%
34 09-25 Garage Pad Area 1108 A1 125.9 6.9 117.6 93.4% 90.0%
35 09-25 House Pad Over.X 1128 A1 125.9 7.7 115.9 92.1% 90.0%
36 09..25 House Pad Over-X 1128 A1 125.9 8.9 116.3 92.4% 90.0%
37 09-25 House Pad Over-X 1128 A1 125.9 5.6 114.3 90.8% 90.0%
38 09-25 House Pad Over.X 1128 A1 125.9 5.8 117.1 93.0% 90.0%
39 09-26 House Pad Over-X F.G. A1 125.9 7.5 114.6 91.0% 90.0%
40 09-26 House Pad Over-X F.G. A1 125.9 6.5 114.9 91.3% 90.0%
41 09-26 Finish Slope Tests 1124 A1 125.9 7.2 115.2 91.5% 90.0%
42 09-26 Finish Slope Tests 1120 A1 125.9 6.9 115.4 91.7% 90.0%
43 09-26 Finish Slope Tests 1170 A1 125.9 5.6 113.9 90.5% 90.0%
'Indicates undisturbed bottom tests.
EnGEN Corporation '\
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Mike and Sandy Teschler
Project Number: T2060-C
Appendix Page 4
SUMMARY OF OPTIMUM MOISTURE CONTENT
MAXIMUM DRY DENSITY RELATIONSHIP TEST RESULTS
ASTM D1557-91
Maximum Optimum
Soil Description (USCS Symbol) Soil Type Dry Density Moisture
(PCF) Content (%)
Silty Sand, Brown (SM) A1 125.9 8.4
Silty Sand, Brown (SM) A2 129.2 8.3
SUMMARY OF EXPANSION INDEX TEST RESULTS
USC 18-2
Dry Moisture Moisture
Soil Condition Condition Expansion
Depth (FT) Density
Type .'~ (pef) Before Test After Test Index
(%) (%)
E-1 -1 119.4 7.6% 12.8% 1
EnGEN Corporation \0
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Mike and Sandy Teschler
Project Number: T2060-C
Appendix Page 5
APPENDIX:
DRAWINGS
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