HomeMy WebLinkAbout1077; Park Drive Sewer Line Trench Backfill Compaction; Park Drive Sewer Line Trench Backfill Compaction; 1980-10-27TRI CI'QENGINEERS.1 iu ^^
A CALIFORNIA CORPORATION
335 OLIVE AVENUE • VISTA, CALIFORNIA 92083
(714) 758-2220
October 27, 1980
WP - 2004
Hadley Bacon
City of Carlsbad
Engineering Department
1200 Elm Avenue
Carlsbad, CA 92008
SUBJECT: Compaction of Sewer Line trench Backfill on Park Drive,
Carlsbad, CA 92008
Dear Mr. Bacon:
As you requested we have tested the compaction of sewer line trench
backfill on Park Drive, Carlsbad, Ca.
On October 27, 1980, our field engineer tested the in-place density
of trench backfill at 2 points designated by you. Testing was in
accordance with the methods prescribed by ASTM D1556-74. Appendix
A summarizes the results of our field testing.
Representative samples of the soil encountered were taken to our
laboratory and moisture-density curves established in accordance
with ASTM D1557-70, Method A. Results of our laboratory analysis
are as follows:
SOIL
TYPE
I
II
DESCRIPTION
Silty Sand with Clay
Coarse Marine Sand
MAXIMUM DRY
DENSITY (PCF)
127.4
125.4
OPTIMUM MOISTURE
CONTENT (%)
9.0
10.5
We appreciate this opportunity to be of service to you. Should any
clarification be necessary or any questions arise please do not hesitate
to call us.
Very truly yours,
TRI CITY ENGINEERS
Alexander W. Urquhart
Civil Engineer
P. E. No. C30958
AWU/WRL/da
Enclosure
±>AKK. DRIVE
!
TEST
40.
1
2
3
•IELD C
TEST
DATE
0/27/80
0/27/80
0/27/80
:NSITY TEST RESULTS:
LOCATION
Park and Hillside
Park and Whitey ' s Lane
Park and Adams Street
VERTICAL
LOCATION
-3.5 ft
-3.5 ft
NO TEST T
•
FIELD
MOIST
(*)
11.4
8.7
&KEN _
FIELD
DENSITY
(PCF)
109.9
102.4
BACKHOE :
SOIL
TYPE
I
II
AILURI
ELATIVE
OMPACT.
(X)
86.3
81.7
REMARKS
90X Reoulred
—
A CALIFORNIA CORPORATION
335 OLIVE AVENUE • VISTA, CALIFORNIA 92083 £- C ' ^ / /
(714) 758-2220
November 6, 1980
WP - 2004
DECEIVED
Hadley Bacon _
City of Carlsbad ] u '980
Engineering Department
1200 Elm Avenue CITY (Jh
Carlsbad, CA 92008 Engineering
SUBJECT: Compaction of Sewer Line Trench Backfill on Park Drive,
Carlsbad, CA 92008.
Dear Mr. Bacon:
As you requested, we have re-tested the compaction of sewer line
trench backfill on Park Drive, Carlsbad, CA.
On October 31, November 4, 5 and 6, 1980, our field engineer tested
the in-place density of trench backfill at locations designated by
you. Testing was in accordance with the methods prescribed by
ASTM D1556-74. Appendix A summarizes the results of our field
testing.
Representative samples of the soil encountered were taken to our
laboratory and moisture-density curves established in accordance with
ASTM D1557-70, Method A. Results of our laboratory analysis are as
follows:
SOIL
TYPE
I
II
III
DESCRIPTION
Silty Sand with Clay
Coarse Marine Sand
Silty Sand
MAXIMUM
DENSITY
127.
125.
128.
DRY
CPCF)
4
4
4
OPTIMUM MOISTURE
CONTENT (%)
9.0
10.5
8.5
We appreciate this opportunity to be of service to you. Should any
clarification be necessary or any questions arise please do not
hesitate to call.
Very truly,
TRI CITY ENGINEERS
Alexander W. Urquhe
Civil Engineer
AWU/WRL/lb P. E. No. C30958
Enclosure
PROJECT: wp - 2004 PARK DRIVE
-»yo»-•
o»•«-H•<
mSB
0
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FTFI n n
FEST
10.
1
2
3
4
5
6
7
8
TEST
DATE
0/31/80
10/31/80
10/31/80
11/4/80
11/4/80
11/5/80
11/6/80
11/6/80
m
* M S I T • TEST RESULTS*
LOCATION
Park and Hillside
Park and Whitey1 s Lane
Park and Adams Street
Park and Whitey 's Lane
Park and Adams Street
Park and Adams Street
Park _and Mams Street
Park and Adams Street
VERTICAL
LOCATION
-3.5'
-3,5'
-3.5'
-3.Q1
-3,0'
-3.0'
-3.0'
-3.0'
*
FIELD
MOIST
(*)
10.6
12.9
10.4
7r2
9.5
7.2
7.7
5.9
FIELD
DENSITY
(PCF)
116.9
103.5
108.1
118.4
110.4
109.2
_112.9
118^4
SOIL
TYPE
I
II
I
II
I
I
I
I
ELATIVE
OMPACT.m
91.8
82.5
84.8
95.2
86,7
85.7
88.6
93.1
REMARKS
90X Required
—
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