SOIL TESTING54440 Avenida Madero
r., RECEIVED
4S..
APR 191985
COMMUNITTMy OF LA UINTA
OEVEL8PMEIVT DEPT
S O U T H E R N C A L I F R N I A SOIL ANO TESTING, I N C
6280 RIVERDALE ST. SAN DIEGO, CALIF. 92120 • TELE 280-4321 • P.O. BOX 20627 SAN DIEGO, CALIF. 92120
7 4- 8 3 1 V E L I E W A Y P A L M D E S E R T, C A L I F. 9 2 2 6 0 • T E L E 3 4 6- 1 0 7 8
6 7 B E N T E R P R I S E S T. E S C O N D I D O, C A L I F. 9 2 0 2 5 • T E L E 7 4 6- 4 S 4 4
RECLIVEQ APR 1 8 1985
March 25, 1985
SCS&T-8431125.
Report No. 1
Mr. Rick Johnson
P. 0. Box 2288
Indio, California 92202
Attention: Mr. Rick Johnson
SUBJECT: Report of In=Place Density Tests,. Proposed Spec House, 54440
Madero, LaQuinta, California.
Gentlemen:
In accordance with your request, this report has been prepared to present the
results of the in-place density tests performed on the fill and natural mat-
erial at the subject site by Southern California Soil & Testing, Inc. These
tests were performed on December 6, 1984.
AVAILABLE PLANS
Grading plans were not made available to us to indicate the elevations of our
field density tests and to define the general extent of the site grading. There-
fore, we have provided a hand sketch indicating the graded areas and the locations
of our tests.
SITE PREPARATION
Prior to the arrival of a representative of Southern California Soil & Testing,
Inc., up.to 2 feet of fill material had been placed on the northeast -corner of
the housepad. It was noted that this fill contained some organic material, Pre-
paration of the natural soil to receive .the fill was not observed by our
S O U T H E R N C A L I F O R N I A S O I L A N D T E S T I N G, I N C
j
SCS&T-8431125 March 25, 1985 Page Two
Report No. 1
representative.
FIELD TESTING
Field density tests were performed by a representative of Southern California
Soil & Testing, Inc. following compaction operations. The density tests were
taken according to A.S.T.M. Test 1556-74 and the location and results of those
tests are shown on the attached plates. The locations and elevations of the
in-situ tests were determined in accordance with their importance and the ac-
curacy and proximity of the survey control provided by other;:than Southern
California Soil & Testing, Inc. representatives. Unless otherwise noted, their
locations and elevations were determined by pacing and hand level methods and
should be considered accurate only to the degree implied by the method used.
LABORATORY TESTS
A maximum dry density determination was performed on a representative sample
of the soil used in the compacted fill according to A.S.T.M. Test 1557-78,
Method A. This method specifies that a four (4) inch diameter cylindrical mold
of 1/30 cubic foot volume be used and that the soil tested be placed in five (5)
equal layers with each layer compacted by twenty-five (25) blows of a 10 pound
hammer with a 18 inch drop. The results of these tests, as presented on Plate
Number 2, were used in conjunction with the field density tests to determine the
percent of relative compaction of the compacted fill.
CONCLUSIONS
Based upon the in-place density test results, test No. 1 did not meet 90% rela-
tive compaction. Therefore, it is our opinion that future distress in the floor
slab could result. The client has been informed of all test results. Since there
is a transition line between cut and fill running through the building pad area,
it is the recommendation of Southern California Soil & Testing, Inc. that adequate
steel be placed in the footings. This recommendation is based on the tendency of
cut and fill soils to compress differently, resulting in cracking of footings and
unequal structural support. Both exterior and interior continuous footings should
be reinforced with at least one #4 bar positioned 3 inches clear above the bottom
of the footing and one #4 bar positioned 3 inches below finished floor.
S 0 U T H E R N C A L I F 0 R N I A S 0 1 L A N 0 T E S T I N G 1 N C.
SCS&T-8431125 March 25, 1985 Page Three
Report No. 1
This report covers only the work performed on December 6, 1984. Our opinions
presented herein are based on our observations and the relative compaction test
results. Due to possible variations in the uniformity of compacted fills, we
only warrant that our work was..performed in accordance with the currently ac-
cepted standards of practice. No other warranty, express or implied is given or
intended.
If you should have any questions after reviewing this report, please do not
hesitate to contact this office.
This opportunity to be of professional service is sincerely appreciated.
Respectfullly submitted,
SOUTHERN CALIFORNIA SOIL & TESTING, INC.
Robert R. Russell, R.C.E. 1#32142
RRR:GSF:fp
cc: (3) Submitted
(1) City of LaQui.nta
(1) SCS&T, San Diego
S U T H E R N 0 A L I F R N i A S 1 L. A N 0 T E S T I N G. I N C.
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54450 MADERO
FILL 1 a
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2
EXISTING HOUSE
EL
LEGEND:
® IN PLACE DENSITY TEST LOCATION
SOUTHERN CALIFORNIA
SOIL A TESTING, INC.
EV.=100 ASSUMED
0ZO
NO SCALE
Rick Johnson
BY: L.P. DATE: 12-5-85
JOB NUMBER: 8431125
Plate No. I�
SCS&T 8431125
Report No. 1
March 25, 1985
FIELD DENSITY TESTS REPORT
TEST NO.
LOCATION
ELEV. OF TEST
(FEET)
MOISTURE
( PERCENT)
DRY UNIT WEIGHT
( LBS. / CU. FT.)
SOIL
TYPE
RELATIVE
COMPACTION
( PERCENT)
DATE OF TEST
1
North 1/4 *
96.5
11
110.1
1
88.1
12-6-84
2
Southwest 1/4
97.5
6.7
121.9
1
97.5
12-6-84
3
West Center **
98.5
7.6
113.0
1
90.4
12-6-8
SOUTHERN CALIFORNIA
SOIL & TESTING, INC.
0280 RIVEROALE STREET
•AN OIE00, CALIFORNIA 22120
* Denotes fill material
** Denotes natural material
SOIL TYPE OPTIMUM MOISTURE MAXIMUM DRY DENSITY
(PERCENT) ( LBS. /CU. FT)
1
10.1
SP/SM Sliahtly Siltv Gravellv coarse sand
125.0