WA9601-LR 98091889/18/1998 14:83 214-36~84
21~-361-020~
SHIMEK,JACOBS~'Z4KLE
PAGE 81/86
SHIMEK, JACOBS & FINKLEA, L.L.P.
CONSULTING ENGINEERS
R333 Douglas Avenue, #820
Dallas, Texas 75225-5816
Fax (214) 361-0204
Phone (214) 361-7900
FAX TRANSMISSION COVER SHEET
Fax Number: (972) 304-3570
From: Pau I Car line
Number of Pages Transmitted (including this one)
Date: September ! 8, 1998
To: Mr. Larry Davis
Test reports for the Sandy Lake Road water line density testing follow. If you have any questions, please
contact us.
Co; Mr. Kenneth M. Griffin, P,E.
89/18/1998 14:83
214-3Gl-B284
SHIMEK,JACOBS&FINKLE
PAGE 82/86
HENLEY
dOHNSTON
& ASSOCIATES, INC.
16 September 1998
Landrr ark
166~ !- armon Road
Fort Worth, Texas 76177
Attention: Mr. Joe Swinnea
Fie:
Density Tests
Water Line Backfill
Sandy Lake Road
Coppell, Texas
HJA 6949
Deer IV r. Swinnea:
In accordance with our recent discussions, we have completed post-construction density
testing of backfill along the Sandy Lake Road water line, from approximately Station
774-87 to Station 95+46, in CoppelT, Texas. A truck-mounted gagtechnical drilling rig
was used to push Shelby Tube samplers into the soil to about 3-foot depth over the
water lane and about B-foot depth in bore pits. Samples were taken at about 1-foot
intervals. At two locations, Station 77+87 and Station 92+90, bulk samples were
obtained by eugerin9 to about 3-foot depth.
All She by Tube samples obtained from the borings were extruded from the sampler in
the fiekc and encased in polyethylene plastic to prevent changes in moisture content and
to pres=.rve in situ physical properties. The samples were labeled as to appropriate
boring ~uml~er and depth, and placed in core boxes for transport to the laboratory.
All soii samples were classified in the laboratory in accordance with the Unified Soil
Classification System. Moisture Content and Unit Dry Weight were determined for each
Shelby Tube sample. The sample at 0 t~ l-foot del~th in Boring No. 3 (Station 85+86)
was so dry that it crumDled when unwrapped in the laboratory and only a moisture
content test cou(d be performed for this sample, The above test data are summarized
on Plates I and 2. Standard Proctor Compaction tests (ASTM D 698) were performed
on eacl, bulk sample, The results of these tests are presented on Rate 2. Each Shelby
Tube s~.m ple was matched to one of the compactlon tests and dry density of the sample
compared to the maximum dry density determined by the appropriate compaction test.
These comparisons are tabulated for each sample as percent of maximum dry density
on Plates I and 2.
c,,h.,~hone (214l 94Z-3808
ZOO 'a
943,7645
8888-6£~-lI8:13~
·
235 Morgan Ave..
Dallas, Texas 75203,I088
)t~IVI~(]NVI 6S:~I (0H,L)86,LI-'d3S
8~/18/1S98 14:83 214-3Gl-B284 SHIMEK,JACOBS&FINKLE PAGE 83/06
This method of testing can vary from results provided by on-site field density check tests
during construction, but does provide a basis for determining if the material was placed
consls-.entiy and generally in accordance with specifications. The sample taken and
tested by this method is smaller than the volume of material typically included in the
moistu-e and density measurements by nuclear methods. Small inclusions in the
physical sample could cause variations that might be "averaged" in the larger sampling
sample may pro~de a '~igh" density and a "low" moisture content; A
void, or inclusion of organic ma~er, may provide · "low" densi~ and "high" moisture
conten:, Pushing a sample tube into the soil and e~racting the sample ~om the tube
will disturb the soil, even though the sample is considered "undisturbed" for geotechnic~l
testing purposes.
Some variations in density are noted in the samples obtained for this investigation. We
unders:and that the samples obtained in Boring No. 8 were in soil that had not been
excava:ed for the water line installation. It should be noted that the upper two feet of
material at this location had high densities compared to the maximum dry density; below
two feet, the density drops off considerably. We would expect that in the natural state
the upper materials may have reI~.tively high densities partially because of the relatively
dry cot ditions at the time of the sampling and partially because construction equipment
may h&ve run over this location many times during construction of the water line. We
would anticipate that, in normal moisture conditions, natural soils near the surface will
typically have cien~ities near 85 to 90 percent of the maximum dry density determtneci
by a St-~ndard Proctor Compaction test.
The Ol~timum Moisture Content for both Proctor samples is about 13.5 percent. In
Boring xlos. 1 and 2 below about 3 to 4*foot depth, the moisture contents are very low,
ranginc~ from about 3.5 to 7 percentage points bek~w Optimum Moisture Content. The
upper 2 to 3 feet of soil in Boring Nos. 3 and 4 also is very dry with moisture contents
about zlL to 7.5 percentage points below Optimum and the upper 1 foot of Boring No, 9
is very ow in moisture content. Two high moisture content areas were noted - about 1
to 3 feet in Boring No. 2 and about 1 to 3 feet in Borir~g No. 5.
We do 'lot know what the specifications require for this project; the above comments
are genera] observations from the clara obtained from this investigation.
HENLEY
JOHNSTON
ASSOCFATES,|NC,
ge~cte~ co~s~tan~s
£00 'c]
8888-6£~-L]8;33£
89/18/1998 14:83 214-3G1-8284 SHIMEK,JACOBS&FINKLE PAGE 84/85
Landmark
Mr. Joa Swinnea
16 September 1998
Page 3
We trust that this provides the information you need at this time, Plea, se call us if you
have ~'~y questions or when we can be of further assistance to you,
Sincerely.
John W. Johnston, P.E,
Executive Vice President
Henley-Johnston & Associates, Inc.
JWJ
Encls.
~.00 'd
k
HENLEY
JOHNSTON
& ASSOCIATES, INC,
89/18/1998 14:83 214-3G1-8284 SHIMEK,JACOBS&FINKLE PAGE 85/8G
WATER LtNE IN SANDY LAKE. ROAD
COPPELt,, TEXAS
SUMMARY OF LABORATORY TESTS
BORHG
NUMEEFI
B-1
B-1
8-1
B,1
8-1
STATION
NUMBER
82+79
DEPTH MC DUW PROCTOR % MAXIMUM
(ft) (%) (pcP) DRY DENSITY
_ 'l~',
0,0-1.0 10.~a 111.5 001 97,0
1,0-2,0 15.4 114.4 001 99,6
2,0-3,0 15,5 115.5 001 100+
3 .O-4.0 13.0 113.S 001 98.9
4.0-?S .0 6,5 101.5 002 89.0
5.0-6,0 7,3 119,8 002 100 ,f,
~00 'a
B-2
B-2
8-2
B-3
8-3
B-4
8-4
B-4
B-4
8-4
8-4
5-5
B-5
83+3S
854-86
87~89
89+43
0.0-1,0 16.9 106,7 002 93.6
"1.0 -2.0 21,0 109.1 002 95.7
2.0-3 ,o 21,0 104,7 002 91.8
3,0-4.0 9,8 112.4 002 98,6
4,Q-S.0 7,9 109,3 002 95.9
5,0-6.0 7,9 104,1 002 91,3
0.0-1.0
1.0-2,0 7,0 101,0 002 88,6
2.0-C~ .0 14,7 109.6 002 96, 1
0.0-I ,0 8,5 115.4 002 100,,'-
1.0 -;Z ,O 9,3 101,1 002 88.7
2.0,3.0 10,~ 110,0 002 96.5
3.0,4,0 11.8 107,7 002 94,5
4.0-5.0 10.9 103.9 001 90,3
5.0-6.0 11.4 113,8 o0'1 99,0
0.0-1.0 17,4 104.2
1,0-2,0 22.7 98.6
2.0 -3,0 19.9 108.2
3,0-4,0 17,1 104,0
4.0-5,0 15,7 108,4
5,0-6,0 18,8 t07,1
8888-6£~-~[8:q31
002 9"i .4
002 86,5
002 94.9
002 91 .~
002 95,1
002 93,9
HENLEY
JOHNSTON
& ASSOCIATES, INC,
t,,tl~l!rt~frtn9 ~.OlCI,Jr~'e cortSUl~(4t~£~
PLATE 1
)i~{VI, tQNVq GO: i,l (fill,L) 86 ,L l - 'd3S
89/18/1998 14:83
214-361-8284
SHIMEK,JACOBS&FINKLE
PAGE 86/86
WATER LINE IN SANDY LAKE ROAD
COPPEt,L, TEXAS
SUMMARY OF LABORATORY TESTS
NBUO~N& STATION DEPTH MC DUVV
NUMBER (ft) (%) (pct)
B,6 94+68 Q.0-1 .Q 13,5 119.6
8-6 1.0-2.0 12.1 111.1
B-6 2,0*3,0 15.8 107.6
8-6 3,0-4 .O 15.3 106.8
8-6 4,0~5.0 14,6 1 ~8.4
Et-6 6,0-6.0 16,0 110.0
PROCTOR % MAXIMUM
DRY DENSITY
o02 100+
002 97,$
002 94.4
002 93.7
002 95.7
002 96,5
B-7 95+48 0,0-1 ,O 12,3 11
8-7 1.0-2.0 12.0 111,1
B-7 ~,0-3.0 11,6 103.9
B-7 3,0.4.0 13,2 105,0
B-7 4.0o5,0 11 o3 102.7
B -7 5.0-6,0 17.0 105,6
002 100+
002 97.5
002 91,1
002 92.1
002 90.1
002 92,6
8-8 92-~-90 0.0-1.0 11,9 120.6
B-8 1,0-2.0 15,8 114,3
8-8 2,0-3,0 17.6 106,1
002 100+
002 100+
002 93.1
B-9 77+87 0.0-I ,0 8.S 120,9
B-9 1.0-2,0 13.6 112.1
B-g 2,0-3,0 11.1 102,9
SUMMAInLY OF STANDARD PRO.~TOR DENSITY' TESTS
Brown snd recl~ish brown sandy ~lay with some 9ravel
Optimum Moisture Content: 13.7 %
Maximum Dry Density: 115,0 pcf
002
Brown clay with some weathered limestone fragments
Optimum Moisture Content: 13,5 %
Maximum Dry Density: 114,0 pcf
* Unable to trim sample.
001 100+
0ol 97,5
001 89,5
9OO'd
8888-6£P-Z[8:13~
HENLEY
JOHNSTON
& ASSOCIATES, INC,
~tng~'tLAt'rin.q 9eO.IC~.~,~¢~' Con,Yul~t$
P~TE 2