HomeMy WebLinkAboutParcel Map 18922 Parcel 1 Soils Report
REPORT of OBSERVATION
and FIELD DENSITY TESTING
for RESIDENTIAL GRADING
PCL 1; PM 18922
APN: 957-170-019
Temecula, California
LDOO-034GR
April 27, 2000
Prepared for:
Ms. Gabrille Zaccuri
39657 Long Ridge Drive
Temecula, California 92591
Phone: 909/677-2109
Prepared by:
Gunvant Thakkar, P.E.
45712 Classic Way
Temecula, California 92592
(909) 676-7541
RECEIVED
APR 2 7 2000
CITY OF TEMECUtA
ENGINEERING DEPARTMENT
\
GUNVANT THAKKAR,
PROFESSIONAL ENGINEER
45712 Classic Way, Temecula, California 92592 909)676-7541
April 27, 2000
Ms. Gabrille Zaccuri
39657 Long Ridge Drive
Temecula, California 92591
Phone: 909/677-2109
Project:
Compaction Testing & Report
PCL 1; PM 18922
APN: 957-170-019
Temecula, California
LDOO-034GR
Dear Ms. Zaccuri:
In accordance with your request, we have prepared this compaction report for the subject property.
The report represents a summary of the observations and compaction testing of the fill placed on
the proposed grading pad. Field testing and observations indicate the compaction and grading of
the soil was performed properly. The soil should perform satisfactorily for the expected usage. The
included findings and recommendations have been derived in accordance with generally accepted
professional principles and practices in the fields of soil mechanics and foundation engineering.
This warranty is in lieu of all other warranties, either expressed or implied.
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INTRODUCTION
,
In accordance with your request, tests have been performed on the fill placed on the rough graded
residential pad. The excavation, fill placement, compaction and testing associated with this phase
of the grading was performed during April 17 through April 25, 2000. This report presents a
summary of the testing services provided.
PROJECT DESCRIPTION
The site will have a double wide mobile home with a detached garage constructed on it with
associated landscaping and access drive. The detached garage is a one story, wood frame
founded on a continuous perimeter footings foundation system.
GRADING PROCEDURES
The observations and test results indicated that the grading was performed in the method
consistent with the U.B.C. as amended by Ordinance 457. All areas to receive fill were stripped and
cleared of vegetation and soft soil prior to placement of soil fill.
Keying and benching into natural ground was completed in general compliance with the Uniform
Building Code, Appendix Chapter 33.
The minimum acceptable degree of compaction was 90 percent of the maximum density.
FIELD DENSITY TESTING
Field density testing was performed in accordance with ASTM D1556-64 (Sand Cone Method). The
results of the field density tests are presented in Table I of this report. The approximate location of
the tests are shown on the Plot Plan, Plate 1.
MAXIMUM DENSITY DETERMINATIONS
Maximum density 1 optimum moisture determinations were made from representative samples of
on-site soils used in the fill operations. The tests were performed in accordance with ASTM D1557-
78 Method.
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LIMITATIONS
The findings and recommendations of this report were prepared in accordance with contemporary
principles and practices in the field of geotechnical engineering. No other warranty or guarantee is
either expressed or implied. Only a portion of the subsurface soils and conditions were evaluated or
observed and the conclusions are based upon an interpretation of the soils conditions encountered
in the field tests. Conclusions are also based on the assumption that these findings do not vary
appreciably in the adjacent areas. However, minor variations may occur: should soil conditions
significantly different be encountered in the future, an assessment of the impact on subsequent
recommendations should be made.
All future grading and fill placement should be performed under the inspection and testing of a
registered civil engineer.
SUMMARY
Our description of grading and backfill operations, as well as testing services, were limited to those
grading operations performed during April 17 through April 25,2000. The conclusions and
recommendations contained herein have been based upon our observation and testing as noted.
To the best of my knowledge, the work within my area of responsibility is in accordance with
applicable provisions of U.B.C. as amended by Ordinance 457.
Due to periodic site inspections and testing, footing excavations should be inspected by a registered
civil engineer prior to concrete placement to verify proper embedment entirely into competent soils.
RECOMMENDATIONS
1. Mobile home and garage all sit on cut so no over-excavation is required.
2. A safe allowable bearing value for foundations embedded a minimum of 12" below lowest
adjacent grade into competent ground is 1,500 psf. Continuous footings should have a minimum
width of 12 inches. The isolated column footings should have a minimum embedment of 18
inches below lowest soil grade.
3. All concrete slabs on grade should be 4" thick. They should be underlain by 3" of sand or gravel.
Areas that are to be carpeted or tiled, or where the intrusion of moisture is objectionable, should
be underlain by 6 mil visqueen properly protected from puncture with an additional 1 " of sand
over it. This arrangement of materials would result in a profile downward of concrete, 1" of sand,
6 mil visqueen, 3" of sand and subgrade soil. Contractors should be advised that, when pouring
during hot or windy weather conditions, they should provide large slabs with sufficiently deep
weakened plane joints to inhibit the development of unsightly and irregular cracks.
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4. All footings for single story construction shall be a minimum of 12" in width and 12" in depth,
measured below the lowest adjacent compacted or firm grade. For two story construction, the
footings shall be a minimum of 15" in width and 18" in depth. All footings shall incorporate a
minimum of one # 4 bar running continuously through the footings. The bars shall be lapped a
minimum of 30 bar diameters and shall be placed approximately 3" from the bottom. All footings
shall be extended to a depth sufficient to provide a minimum setback from the bottom of the
footings to the daylight in any adjacent slope in accord . ce wit~.B.C. .
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5. The soil should perform satisfactorily for the ex.~. eTIfA~""-<'..
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Exp. 12-31- ",'2..- *
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DATE: 4 z.. 7/00
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LEGEND
APPROXIMATE TEST LOCATION
DATE: f Z-7{ (jd
TEST LOCATION PLAN
PLATE: ,
1
,
GUNVANT THAKKAR, PROFESSIONAL ENGINEER
45712 Classic Way, Temecula, California 92592 (909) 676-7541
.
Ms. Zaccuri
Maximum Density Optimum Moisture Content
(pcf) (%)
117.0 11.8
Eleva-
Tion
(Feet)
Max.Dry
Density
(pcf)
Water
Content
(%)
Dry
Density
(pcf)
Relative Method
Compac-
tion (%)
1. 1280 117.0 10.5 107.6 92 SC
2. 1283 117.0 11.0 106.5 91 SC
3. 1276 117.0 10.8 107.6 92 SC
4. 1284 117.0 10.5 108.8 93 SC
5. 1282 117.0 11.0 110.0 94 SC
6. 1206 117.0 11.2 108.8 93 SC
7. 1287 117.0 10.8 107.6 92 SC
8. 1287 117.0 11.5 108.8 93 SC
9. 1286 117.0 10.9 107.6 92 SC
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