HomeMy WebLinkAboutCT 72-03; TRI-CITY AUTO PLAZA; RESULTS OF FIELD DENSITY TESTS; 1973-04-24•
BENTON ENGINEERING. iNC.
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APPLIED SOIL MECHANICS -FOUNDATIONS c! T72--3
6717 CONVOY COURT
SAN DIEGO, 'CALIFORNIA 92111
PHILIP HENKING BENTON
PRESIDENT· CIVIL ENGIHEER April 24, 1973 TELEPHONE (714) 565.1955
Mr. Howard Hasse tt
c/o Bridge Iviotor Inn
1103 North Hill Street
Oceanside, California 92054
C'12-«>'3
RECEIVED
Subiect:
Gentl~men:
Pro fect No. 72'-10-30'
Results of Field Density Tests
Taken in Subgrade and Base Materials
Tri-City Auto plaza
Carlsbad, California
APR 2 5 1~13.
ClTY Of CARLSBAD
Engineerlng Department
This is to report the results of field density tests taken in compacted subgrade and base materials
at the subject site during the period between April 2 and April. 18, 1973.
The tests were taken on the dates indicated below:
Test Number
1 to 10, inclusive
11 to 13, inclusive
14to 19, inclosive'
20 to 27, inclusive
28 to 33, inclusive
34 to 37, inclusive
Date
Aprii 2, 1973
April 4, 1973
April 6, 1973
. April 10, 1973
April 13, 1973
April 18, 1973
The approximate locations at which the tests ~re tdkenand the final test results are presented
On pages 2 to 5 , inclusive, under the IITable of Test Results.1I The laboratory determinations
of the maximum dry densities and optimum moisture contents of the materials are presented on
. page 5, under' the II Laboratory Test Resul ts. II
Respectfully submitted,
BENTON ENGINEERING, INC.
By-d?C~ . R. C. emer
Reviewed ~, f{(~ I
Piij)H.Benton,Civii Engineer. I
Distr: (5) Addressee
(2) City of Carlsbad
Engineering Department
(1) Fiest , Vetter, Knauf & Loy
Attention: Mr. R. KnalJf
RCIVPHB/meg
r;
ilt),... .....
. "l Project No. 72-10-3D e -2-e Apri I 24, 1973
. Tri-<:ity Auto Plaza
TABLE OF TEST RESULTS
Depth of Maximum
Test Below Field Dry Dry
Test . Approximate Existing Sur-Moisture Density Density Percent
No. Location face in Feet % dry wt Ib/cuft Ib/cu ft Compaction
1 Subgrade Over 0.3 8.0 120.5 129.4 93,1
Sewer Lateral,
Sta. 1 + 43
251 East Of
West Curb
2 Subgrade Over 0.2 7.2 122.8 129.4 94 .• 8
Water Lateral,
Sta. 4 + 90
201 East of
West Curb
3. Subgrade Over 0.2 6.5 122.2 129..4 94.5
Storm Drain,
Sta. 8 + 65
91 East of
West Curb
4 Subgrade, 0 .• 2 7.9 127.3 132.6 96.1
Sta. 24 +50
151 East of
West Curb
5 Subgrade Over 0.3 8.7 129 .. 7 132 .• 6 . 97.8
Sewer Main,
Sta. 19 + 50
6 Subgrade Bet~en 0.2 8.0 123.4 . 129.4 95.5
Sewer And Water
Laterals;
Sta. 17 + 55
7 Subgrade, 0.2 8.4 125.9 129.4 97.2
Sta. 16 + 20
101 East of
West Curb
8 Subgrade, 0.2 7.4 123.4 129.4 95.5
Sta. 11 + 50
121 East of
West Curb
9 Subgrade, 0.2 . 8.5 123.8 129.4 95.7.
Sta. 0 + 90 On
Private Street
. Between Lots 7 & 8
BENTON ENGINEERING, INC.
.... , ... ~ .' I"·' I
'project No. 72-10-30 • -3-• April 24, 1973 f~-·' <Trt-City Auto Plaza
TABLE OF TEST RESULTS (CONT.)
Depth of Maximum
Test Below Field Dry Dry
Test Approximate Existing Sur-Moistur~ Density Density Percent
No. Location face in Feet % dry wt Ib/cu ft Ib/cu ft Compaction '
10 Subgrade, 0.2 7.7 123.4 129.4 95.5
Sta. 3 + 55
on Private Street
Between Lots 7 & 8
11 Subgrade, 0* 7.6 124.3 128.6 96.7
Sta. 7 + 70
West Side
12 Subgrade, 0* 8.3 .125.3 129.4 96.8
Sta. 16 + 20
West Side
lS Subgrade, 0* 8.0 127.7 128.6 99.3
Sta.27+50
West Side
14 Base, 0* 7.7 133.0 127.5 1-04.2
Sta. 30 + 00
West Side
15 Base, 0* 5.,4 131.5 127.5 103.0,
Sta. 25 + 00
West Side
16 Base, 0* 7.3 129.8 127.5 101.7
Sta. 20 t 00
West Side
17 Base, 0* 5.3 125.8 r27.5 98.6
Sta. 15 + 00
West Side
18 Base, 0* 5.0 126.0 127.5 98.8
Sta. 10 + 00
West Side
19 Base, 0* 5.6 124.8 127.5 97.8
Sta. 5 + 00
West Side
20 Base, 0* 4.8 1,26.1 127.5 98.9
Sta.28+00
East Side
* -Indicates Test Was Taken In Upper 6 Inches Of Existing Subgrade Or.
Base Course
BENTON ENGINEERING. INC.
'; Protect No. 72 .... 10-3D • -4-• AprU 24, 1973 ~.:...~.' ~ Tri-City Auto Plaza
TABLE OF TE~T RESULTS (CONT.)
Depth of Maximum
'Test Below Field Dry Dry
Test Approx'imate Existing Sur-Iv\oisture Density Density Percent
No. Location, face in Feet % dry wt Ib/cu ft Ib/cu ft CompClction
21 Base, 0* 6.0 131.8 127.5 103.2
Sta. 23 + 00
East Side
'22 Base, 0* 5.0 131.6 127.5 103.1
Std. 18 + 00
East Side
23 Base, 0* 6.7 127.2 127.5 .. 99.9
''';f' Sta. 13 + 00
," East Side
I .,~.~"~4 ' Base, 0* 4.8 127.1 127.5 99.7
~/~;'.'~~;' Sta. 8 + 00 ' .. { .l· .~ East SIde
"::-"Q,5, ." '. Bas~, 0* 6.0 124.5 127.5 97.7
Sta. '3 + 00
East SIde
26 Base, ' <r~ 5.3 126.9 127.5 99,.5
Sta. 1 + 50 On
Private Street .
Ecst Of Plaza Del
Norte,
Sta. 19 + 39
'27 Base, 0* 5.0 124.8 127.5 97,.9
Sta. 4 + 00 On '
Private Street
East of Plaza Del
Norte, ;. ....
Sta. 19 + 39
~8 Subgrade, 0* ,7.2 124.:0 127.2 97~3
Sta. ?3 + 00
5.0 117.0 125.5 93.2 29 Subgrade" 0* "
Sla. 38 + 00 ' , '
:' 30 Subgrade, ·0* 5 .• 4 11-7.9 125~5 93.9'
: ":.' . Sta. 43 + 00
,31 Subgrade, ' 0* 10.2 119.2 128.6 92·.7
Sta. 48 + 00
32 Subgrade, 0* 6.1 121.1 128 .. 6 94.3 '
Sta. 53 + 00 ,
* -Indicates Test Was Taken In Upper 6 Inches 9f Existing
Subgracle or Base Course
BENTON ENGINEERING. INC.
.. ;c.~{£
. /ro lect No. 72-10-3D ! -5-• Apri I 24, 1973 • " > Tri-City ~uto Plaza
TABLE OF TEST RESULTS (CONT.)
~
Depth of Maximum
Test Below Field Dry Dry
Test App roxi mate Existing Sur-Moisture Density . Density P~rcent
No. Location fac~ in ·Feet % dry wt Ib/cu ft Ib/cu ft Compaction
33 Subgrade, 0* 5.0 127.0 ' 129'.4 98.2
Sta.58+00
34 ' Base, 0* 5.7 127.9 127.5 100.2
Sta. 37 +00
35 Base, 0* i.l 126.9 127.5 99.4
Sta. ,43 +00
36 Base, 0* 6.8 124.8 127.5 97.8
Sta. 49 + 00
37 Base, 0* 6.8 131.0 127.5 102.8
Sta. 55 + 00
* ... Indicates Test Was Taken In Upper 6 Inches of Existing
Subgrade or Base Course .
LJ\BORATORY TEST RESULTS
The ma~imum dry densities and optimum moisture contents of the maior fill materials as deter-
mined by the A.S. T .M. D 1557-66Tmethod, that uses 25 b.lows of a 10 pound rammer falling
from a height of 18 inches on each of 5 fayers in a 4 inch diamete'r 1)30, cubic foot ~tnp'action
cyBnder, c;Jre presented os follows: ' ., -,
$a-i1 Description
Dark brown silty fine to mediul\I sand
Red-brown clayey fine to medium sand
Brown silty fine to medium sand
Brown silty fine to medium sand
Brown slightly silty fine to medium sand
Brown slightly silty fine to medium sand
. (D. G. Bose)
BENTON ENGINEERING, INC.
Ivlaximum
Dry Density
Ib/cu ft
1.29.4
127.2
,125.5
132.6
128.6
127.5
Optimum Moh-
ture Content
% dry wt
8.4
10.8
9.2
7.8
8.8
8.5