HomeMy WebLinkAbout69-16; EL CAMINO MESA UNIT NO. 5; TEST RESULTS; 1969-12-23(jc-Rp
WOOD WARD - CLYDE & ASSOCIATES . .
CONSULTING SOIL AND FOUNDATION ENGINES AND GEOLOGISTS
December 23, 1969
Project No. .69-341
3467 Kurtz Street
California
San Diego -
92110 IV i'
(714) 224-2911 .
. . .. .
. CR Paul Ecke Ranch. .
P. 0. Box 488 ..• . çSBP Encinitas., California 92024 - . . CVT' of C epartment
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TEST RESULTS
POSSIBLE PAVEMENT BASE AND/OR .. -.
SUBBASE MATERIALS
PALOMAR AIRPORT ROAD AND LOWDER LANE
CARLSBAD, CALIFORNIA
As requested, we have had laboratory tests made on soil samples of mate-
rials from designated pits to ascertain their suitability for use as
base and/or subbase materials in flexible pavement sections for the
subject project. Samples 1, 2, and 3 were obtained, respectively, from
pits known as Thibodo Pit - County Pit #741, Packing Shed Pit, and Mesa
Pit. Grain size gradation, sand equivalent, laboratory compaction, and
R-Value tests were performed on Sample 1, and grain size gradation and
sand equivalent tests were performed on Samples 2 and 3. The R-Value
test on Sample 1 was performed for us by Testing Engineers, Incorporated.
The results of the laboratory tests are attached.
Based on our analysis of the test results, it is our opinion that the.
generally well graded course to fine materials of Sample 1, with a sand
equivalent value of 61, and anR-Value of 78, are satisfactory for use
as base course materials for the pavement sections proposed inôur
letter of November 20, 1969, in lieu of the Class 2 Aggregate Base
indicated. It is also our opinion that the materials of Sample-3 meet
the minimum requirements for Class 3 Aggregate Subbase per State of
California Division. of Highways Standard Specification 25-1 .02, and
are suitable for use in pavement sections proposed for use with Class
3 Subbase by our letter of November 20, 1969. .
In view of the above, it is recommended that the pavement design. sec-.
tions proposed. as Alternates 3 in our letter of November 20, 1969, be
used for both Palomar Airport Road and Lowder Lane, and that the mate-•
rials from Thibodo Pit - County Pit #741 representative, of Sample 'l '
and materials from the Mesa Pit representative of Sample 3 be used: as
base and subbase, respectively. .. • .
Paul Ec.ke Ranch. . . . .
Project No. 69-341
December 23., 1969 . . .
Page2 '. : •.
For your convenience, the recommended pavement design sections proposed
. as Alternates 3 in our letter of November 20, 1969, are repeated below:
•
.• • . PALOMAR AIRPORT ROAD •
.
• . •• .
3 inches Asphalt Concrete (Type B), over .
12 inches Aggregate Base (Class 2), over .
11 inches Aggregate Subbase (Class 3)
.
LOWDER LANE • ,• . • . . • .
3 inches Asphalt Concrete (Type B), over •
9 inches Aggregate Base (Class 2), over .
.10 inches Aggregate Subbase (Class 3)
If we can be of further service, please.call at your convenience..
oujs J. Le/R. E. 14129 • • .
JAH/LJL/sb
1t4-+-hmon4- .• • . •
(4) Paul Ecké Ranch • . .
(1) Sim J. Harris . . .
•
. . 1) Associated Engineers • . . . •
1) City Engineer, Carlsbad
WOOD WARD CLYDE & ASSOCIATES
Consulting Sod and Foundation Engineers and Geologists
- Attachment 1
SAMPLE TEST RESULTS
Sample 1 Sample 2 Sample 3
Thibodo Pit-County #741 Packing Shed Pit Mesa Pit
Gradation: . . . . . . • .
Sieve Size Percent Passing Percent Passing Percent Passing
97.
1 96 . . 3/4.. 95 .5
1/2 .• 94: . . 3/8 92 .
4 .. 80
• 10 . .. . 69 . . • 100 . . . loo: 20 . 45 . .98 .96.
30 69 . . 51
60 • 22 . 5.. 37 24 140 • . . .' ii • 22 . 14 200 .. . 5 9 .. . . 19 T12
Sand Equivalent: 61 . . • 20 . . 25
R-Value: . . I . • 78 • • . . .
Maximum Dry Density, pcf: 129.0
Optimum Moisture Content %: 8.0 . S • S
WOODWARD CLYDE & ASSOCIATES
Consulting Soil and Foundation Engineers and Geologists
Attachment 2
FORM 12 500 io•GR JP
S OAKLAND
______________
SAN JOSE' TESTING ENGINEERS, INCORPORATED'LOS ANGELES
SAN DIEGO TESTING LABORATORIES SAN DIEGO
- 3467 )URTZ STREET SAN DIEGO, CALIFORNIA 92110 (714) 222-1185
LABORATORY NUMBERS SD24-2870 . . . DATE December 15, 1969
JOB DATA. Thibodo Pit., Sim Harris C. E,. C. File No. 507 SAMPLE DATA #1, County Pit #741.
Submitted to the laboratory
Woodward-Clyde & Associates . December 10, 1969.
3467 Kurtz Street .
San Die,o, California 92110
EXPANSION PRESSURE AND RESISTANCE VALUE TEST
EXUDATION PRESSURE PSI
BOO . 600 400 200
GRADING ANALYSIS ,
SIEVE PERCENT PASSING
SIZE AS RCVD. As TESTED
2½
2
3/8 . 100. . 100
8.
16
30
50
0
100
200 (WASH)
SANDEQUIVALENT TEST (AVER. OF 2)
CLAY
SAND 0
S.E.
DURABILIT,' FACTOR
40 80
J 30 60 <
>
14
U Z.
0<
(I)
20 40 14
20
F
1ff' I 11111111111
0
0 . 10 0 20
COVER THICKNESS (INCHES)
EXUDATIO PRESSURE PSI
0 ,
0
111111 0 0 . .30 40 ., . 50
EXPANSION PRESSURE REQUIREMENT
0
460 330 220
0
0
PLASTICITY INDEX TEST . . .
LIQUID LIMIT. %__
0 PLASTIC LIMIT, .1. .
0
--
EXPANSION PRESSURE PSF 17 13 9 R VALUE
RESISTANCE VALUE. 'R • •. ., . 80 . 79 76; • AT 300 PSI EXUDATION PRESSURE:_1S____
MOISTURE °' ATTEST 10 3 10.8 1.1 .2 AT EQUILIBRIUM (TI= ) -
DRY DENSITY. PCF. AT TEST . 125. 9 . :125. 5 124. 7 • 0 0• 0
REPORTED To
CLIENT 8 cc.
TESTING ENGINEERS INC
y__________
EIIC '.,s Everett iii Crook