HomeMy WebLinkAbout; Alga Glens; Soils Report Interim; 1974-11-25BENTON ENGINEERING, INC.
APPLIED 6011 MECHANICS - FO”NDATIONS
6717 CONVOY COURT
SAN DIEGO. C*LIFORNI* 9211,
PHlLlP HENKINO BENTON *“lsIDI*T. ClYlL l!NOINll”
La Costa Land Company
Costa De1 Mar Road
Cc&bad, California 92008
November 25, 1974 TELEPHONE ,714, ~Io~-,OSS
Subject: Project No. 69-4-140
County Permit L-6352
Interim Report on
Compacted Filled Ground
Alga Glens
North of Alga Road
And Almaden Lane
La Costa Area
Carlsbad, California
Gentlemen:
RECEIVED
NOV 27 1974
CITY OF CARLSBAD Bulldlng Department
This is to report the resulk of tests and observations made in order to inspect the compaction of
filled ground placed on an area north of Alga Road near Alicante Road in the La Costa area of
Ccalsbad, California. Filled ground had previously been placed on this area and the results of
task taken during these earlier grading periods were included in our report on Project No.
66-3-37D, dated December 76, 1966 and the previous repork submitted under this Pro/ect No.
69-4-14D, dated May 27, 1969, October 27, 1970, and August 18, 1972. The tesk presented
in this report, Nos. 7 to 66, inclusive, were taken during the period between December 14, 1972
cmd April 78, 1974.
The approximate areas and depths of filled ground placed under our inspection in accordance
with the approved speciRcations are shown on the attached Drawing No. 18, entitled “Location
of Compacted Filled Ground.” The grading plan used for the placement of filled ground was
pmpared by Rick Engineering Company.
The approximate locations at which the tests were taken we shown on Drawing No. lB, and the
final test results cre presented on pages 3 and 4, under the “Table of Test Results.” The laboratory
determinations of the maximum dry densities and optimum moisture contents of the malor fill
materials are presented on page 5, under the “Laboratory Test Resulk.” Some of the maximum dry
densities shown in the “Table of Test Resulk” were combinations of these. The tests were taken
during.the weekly periods indicated on the following page:
Project No. 69-4-14D
La Costa Land Company, Alga Glens
-2- November 25, 1974
Test Number Week Ending
1 to 5, inclusive
6,7cmd8
9 to 25, inclusive
26 to 34, inclusive
35 to 44, Inclusive
45 to 53, Inclusive
54
55
56 to 60, inclusive
61, 62 and 63
‘64, 65 and 66
December 16, 1972
February 24, 1973
April 7, 1973
April 14, 1973
April 21, 1973
May 19, 1973
August 18, 1973
August 25, 1973
September 1, 1973
September 8, 1973
April 20, 1974
The final resulk of tesk and observations Indicate that the compacted filled ground has been
placed at 90 percent of maximum dry density or greater.
Additional grading remains to be done on this site in order to bring the area to the elevations
propased for the final site development.
Respectfully submitted,
BENTON ENGINEERING, INC.
Reviewed by La; &w ‘-
RCR/PHB/pk
Dirtr: (3) Addressee
(1) Addressee
Attention: Mr. Burton L. Kramer
(2) City of Carlsbad, Engineering Department
(1) Rick Engineering Company, Cc&bad
BENTON ENOINEERING. INC.
Project No. 69-4-14D -3- November25, 1974
LaCosta Alga Glens
Test
No.
~.,~ 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
; 23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Depth *
of Fill
at Test
in Feet
Field DV DV
Moisture Density Density
46 dry wt lb/w ft Ib/cu ft
Percent
Compaction
2.0 20.5 105.1 116.4 90.3
2.0 19.6 105.6 116.4 90.7
2.0 14.0 705.2 116.4 90.4
2.0 19.1 104.9 116.4 90.0
2.0 19.4 104.0 114.9 90.4
2.0 18.1 109.5 119.5 91.6
2.0 20.0 100.7 111.3 90.4
2.0 19.2 105.2 116.4 90.4
4.0 19.7 103.4 111.6 92.7
4.0 23.6 101.3 111.6 91.0
2.0 18.9 105.3 115.5 91.1
2.0 18.7 108.8 117.0 92.9
2.0 25.0 102.4 113.4 90.3
2.0 21.1 103.0 114.0 90.2
2.0 13.8 103.3 114.0 90.6
2.0 22.0 9a.4 115.5 85.1
2.0 17.0 105.6 117.0 90.2
4.0 15.4 lT3.0 123.6 91.5
4.0 14.3 101.8 112.5 90.5
4.0 16.2 110.8 122.1 90.7
6.0 18.1 109.6 121.0 98.6
6.0 18.8 113.0 123.6 91.4
4.0 14.7 109.0 121.0 90.0
4.0 18.2 94.0 112.5 83.6
4.0 12.2 109.8 121.0 90.7
8.0 17.4 110.1 122.3 90.0
8.0 17.0 104.8 115.5 90.8
6.0 13.7 114.1 120.3 94.7
4.0 17.9 103.1 114.0 90.4
6.0 15.5 98.2 112.5 87.2
6.0 16.6 108.6 119.9 90.5
6.0 13.9 111.9 119.9 93.4
6.0 16.6 103.6 111.6 92.9
6.0 17.3 108.3 119.9 90.5
2.0 15.3 105.6 111.6 90.6
4.0 14.7 111.6 119.9 93.1
6.0 16.2 104.4 116.2 90.0
4.0 18.5 90.4 112.5 80.2
TABLEOFTEST RESULTS
Remarks
Revmrked
Checkon 816
Reworked
Check on 124
Reworked
Checkon#30
Reworked
* Indicates depth of fill placed between December 14, 1972 and April 18, 1974
mENTON ENGINEERING. INC.