HomeMy WebLinkAboutCT 76-17; CANON PARK UNIT 1, 2 AND 3; SOILS REPORT; 1977-12-07''I' 1 • (1-}1&/11. . tj~~
BENTON ENGINEERING. INC. RECEIV~jf
APPLIED SOIL MECHANICS -FOUNDATIONS
6717 CqNVOY COURT
SAN DIEGO. CALIFORNIA 92111 DEC 0 81977,
PHILIP HENKING BENTON
PRESIDENT· CIVIL ENGINEER December 7, 1977
CITY OF CARLSBAD EngineeH~neP'artrnent9t515
La Costa Lemd Company
2100 Costa Del Mar Road
Carlsbad, California 92008
Subject:
Gentlemen:
Proje,ct No. 77-1-50
Results of Field Density Tests
Taken iii Trench Backfill
Canon Park Unit Nos. 1, 2 and 3
Carlsbad Tract No. 76 .. "17
La Costa Avenue and Cadencia Sfreet
Carslbad, California
This is to report the res,ults of field density tests taken in soils placed as backfill over
certain uti! ity I ines in Cal'lon Park Unit Nos. 1, 2 and 3 in Carlsbad, California.
The fests were taken during the weekly periods indicated below:
Test Number
1 to 5, ind~sive
6
7 to 27, inclusive
28 to 34, incl-usive
35 and 36
37, 38 and 39
40 to 43, .inclusive
Week Ending
August 6, 1977
September 24, 1977
October 1, 1977
October 8, 1977
November 19, 1977
November 26, 1977
November 28, 1977 (date of last test)
The approximate location at which the tests were taken and the final test results are
presented as. follows;
Depth of
Test Below Maximum
Approx-Finished Field Dry Dry
Test imate Grade Moisture Density Density Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction
Sewer 2.0 13.8 109.5 121.6 90.3
Brava St.
Sta. 8+69
Remarks
: . • • .. Project No. 77-1-5D
La Costa Land Company -2-December 7, 1977
Depth of
Test Below Maximum
Approx .. Finished Field Dry Dry
Test imate Grade Moisture Density Density Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
2 Sewer 3.0 13. 1 100.9 118.6 85.1 85%
BravaSt. Required
Sta. 7+52
3 Sewer 2.0 12.4 " 102.4 114.6 89.4 85%
Brava St. Required
Sta. 5+80
4 Sewer 2.0 9.5 99.8 115.9 86.1 85%
Cadencia St. Required
Opp. Lot 3
5 Sewer 3.0 20.1 99.0 116.6 85.0 85%
Cadencia St. Required
Opp. Lot 6
6 Sewer 4.0 "20.6 100. 1 114.8 87.2 85%
Hataca Rd. Required
Std.. 5+00
7 Sewer 4.0 21.7 96.5 111.2 86.8 85%
Hataca Rd. Required
" St.a. 8+75
8 Sewer 2.0 .15.9 97.8 "107.8 90.7
Hataca Rd.
Sta. 8+75
9 Sewer 5.0 22.9 97.4 109.0 87.4 85%
Hataca Rd. Required
Sta 7+00
10 Sewer 3.0 15.9 98.4 109.0 90.2
Hataca Rd.
Sta. 7+00
BENTON ENGINEERING. INC.
• • Project No. 77-1-5D
La Costa Land Company -3-December 7, 1977
Depth of
Test Below Maximum
Approx-Finished Field Dry Dry
Test imate Grade Moistvre Density Density Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
11 Sewer 3.0 18.0 95. 1 111 .2 85.5 85%
Solano St. Required
Sta. 9+70
12 Sewer 1.0 18.5 101.4 111 .2 91.2
Solano St.
Sta. 9+70
13 Sewer 4.0 19. 1 96.9 111 .2 87.1 85%
Solano St. ·.Required
Sta. 6+20
14 Sewer 2.0 16.0 101.7 111 .2 9] .5
Solano St.
Sta.6+20
15 Sewer 1.0 10.1 98.8 109.0 90.7
Solano St.
Sta. 1 +00
16 Sewer 3.0 14.7 95.8 111.2 86.1 85%
Solano St. Required
Sta. 4+04
17 Sewer 1.0 13.8 105.8 114.2 92.6
Solano Sf.
Sta. 4+02
18 Water 1.0 16.0 105. 1 114.2 92.0
Solano St.
Sta. 3+25
19 Woter 1.0 22.6 101. 1 111 .2 91.0
Solano St.
Sta.8+15
20 Water 1.0 19.5 87.1 111.3 78.3 Reworked
Pueblo St.
Sta 11 +00
BENTON ENGINEERING. INC.
• e
Project No. 77-1-:-5D
. La Costa Land Company -4-December 7, 1977
Depth of
Test Below Maximum
Approx-Finished Field Dry Dry
Test imate Grade Moisture Density Density Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
21 Water 1.0 17.4 91 • 1 ' 110.4 82.5 Rew'orked
Rona Ct.
Sta. 0+50
22 Sewer 1.0 14.6 83.5 110.4 75.6 Reworked
Rona Ct.
Sta. 0+70
23 Sewer 3.0 23.2 93.5 109.2 85.6 85%
Cielo PI. Required
Sta. 0+70
24 Sewer 1.0 14.7 93.0 109.2 85.2. Reworked
Cielo PI.
Sta. 0+70
25 Sewer 3.0 13.1 103.6 118.1 87.7 85%
Carlino St. Required
Sta. 1:0+85
26 Sewer 1.0 12.4 114.4 121.6 94.1
Carlino St.
Sta. 10+85
27 Water 1.0 12.7 113.7 121.6 93.5
Carlino St.
Sta. 9+90
28 Sewer 1.0 22.0 98.5 109.2 90.2 Check on
Cielo PI. # 24
Sta. 0+70
29 Sewer 2.0 14.4 90.8 114.7 79.2 Reworked
Ouinta St.
Opp. Lot 60
30 Sewer 2.0 10.5 89.0 118.9 74.8 Reworked
Del Rey Ave.
Opp. Lot 38
BENTON ENGINEERING. INC.
e e
,. Project No. 77-1-50
La Costa Land Company -5-December 7, 1977
Depth of
Test Below Maximum
Approx-Finished Field Dry Dry
Test imate Grode Moisture Density Density Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
31 Sewer 2.0 10.7 101.,3 118.9 85.3 85%
Del Rey Ave.
Required
Opp. Lot 128
32 Sewer 2.0 22.6 97.1 109.0 89.0 Reworked
Easement
Between
Lots 172-173
33 Sewer 4.0 26.0 93.9 109.0 86.1 Reworked
Easement
Between
Lpts 172-173
34 Sewer 4.0 15.3 112.8 121.6 92.8
E-asement
Between
Lots 172-173
"35 Sewer 2.0 11.7 103.3 114.7 90.1 Check on
# 29
Ouinta St.
Opp. Lot 60
36 Sewer 2.0 18.6 100.2 109.7 91.3
Del Rey Ave.
Opp. Lot 56
37 Sewer 5.0 19.0 100.-8 109.0 92.5
Easement
Between
Lots 172-173
38 Sewer 4.0 19.2 103.9 109.0 95.3 Check on
# 33
Easement
Between
Lots 172-173
BENTON ENGINEERING. INC.
• Project No. 77-1-5D
La Costa Land Company
Depth of
Test Below
Approx-Finished
Test imate Grade
No. Location in Feet
39 Sewer 2.0
Easement
Between
Lots 172-173
40 . Water 1.0
Pueblo St.
Sta. 11+00
41 Water 1.0
Rona Ct.
Sta. 0+50
42 Sewer 1.0
Rana Ct.
Sta. 0+70
43 Sewer 2.0
DelRey Ave.
Opp. Lot 38
•
-6-December 7, 1977
Maximum
Field Dry Dry
Moisture Density Density Percent
% dry wt Ib/cu ft Ib/cu ft Compaction
18.2 104.7 114.1 91.8
18.6 101.4 111.9 90.6
9.8 103.6 110.4 93.8
16.2 100.6 110.4 91.1
14.7 110.2 121.6 90.6
LABORATORY TEST RESULTS
The maximum dry densities and optimum moisture contents of the major fi II materials as
determined by the A.S. T .M. D 1557-70 methoc;l that uses 25 blows of a 10 pound rammer
falling from a height of 18 inches on each of 5 layers in a 4 inch diameter 1/30 cubic foot
compaction cyl inder, are presented as follows:
Maximum Optimum Mois-
Dry Density ture Content
Soil Description Ib/cu ft % dry wt
Red brown silty clay 111.9 15.3
Brown gray silty clay .109.0 17.8
Light yellow brown silty very fine to tine 109.2 16.8
sand with clay binder and chunks of
silty clay
Yellow brown very fine to fine sandy clay 110.4 15.5
Gray brown fine sandy clay 110.9 14.3
BENTON ENGINEERING. INC.
Remarks
Check on
# 32
Check on
# 20
Check on
# 21
Check on
# 22
Check on
# 30
, .. Project No. 77-1-5D
La Costa Land Company
Soil Description
OHve green silty cloy
•
-7-
Light gray brown clayey very fine to fine sand
Gray with red brown and white sil'ty cloy
Light brown and gray silty cloy
Light yellow brown fine sandy cloy .
Light gray clayey silt with streaks of red brown
and yellow
Light gray brown fine sandy cloy
Respectfull y submittedr
BENTON ~NGINEERING, INC.
ByR.C~
R.C. Remer
Reviewed by ~~< ~
S. H. Shu, Civil Engineer
R.C .E. No. 19913
Dish: (2) Addressee
(1) Addressee
Attn: Mr. Burton C. Kromer
(2) City of Carlsbad
Engineering Deportment
(1) Rick Engine,ering Company, Carisbad
Maximum
Dey Density
Ib/cu ft
111 .2
114.2
114.7
118.6
121.6
111.3
118.1
BENTON ENGINEERING. INC.
December 7, 1977
Optimum fv\ois-
ture Content
.% dry wt
15.0
14.4
15.3
14.0
11.5
16.0
14. 1