Aptim Environmental & Infrastructure, LLC
6401 Congress Avenue, Suite 140
Boca Raton, Florida 33487
Phone # 1-561-391-8102
Legend for Geotechnical Data
Grain Size Scale for Sediments
Proportional Definition of Descriptive Terms
Descriptive Term
Range of Proportions
Sandy, gravelly, etc.
35 % to 50 %
Some
20 % to 35 %
Little
10 % to 20 %
Trace
1 % to 10 %
Consistency of Cohesive Soils
Description
Consistency
Index
Approximate
Undrained Shear
Strength (kPa)
Field Identification
Hard
Over 300
Indented with difficulty by thumbnail, brittle.
Very Stiff
>1
150-300
Readily indented by thumbnail, still very tough.
Stiff
0.75-1
75-150
Readily indented by thumb but penetrated only with difficulty. Cannot
be moulded in the fingers.
Firm
0.5-0.75
40-75
Can be penetrated several centimeters by thumb with moderate effort
and moulded in fingers by strong pressure.
Soft
< 0.5
20-40
Easily penetrated several centimeters by thumb, easily moulded.
Very Soft
Less than 20
Easily penetrated several centimeters by fist, exudes between fingers
when squeezed in fist.
Source:
Engineering Properties of Soils and Rocks, Fourth Edition by Fred G. Bell
USCS Classifications
Refers to the Army Corps of Engineers Unified Soils Classification System. Class types
are defined primarily by grain size, sorting and percent of material passing the #200 sieve.
Classification of materials on the core logs based on visual field examinations are identified on
the core logs under the Classification of Materials Description. Classifications based on
laboratory sieve analyses are identified on the core logs in the Legend and under Remarks.
Note:
Information is after ACOE Atlantic Division Manual # 1110-1-1 titled
Engineering and Design
Geotechnical Manual for Surface and Subsurface Investigations
LEAN CLAY, stiff, trace sand, fine grained, quartz,
trace shell fragments, trace shell hash, trace whole
shell, sand lamina @ 0.4', (1.5" x 2.0") shell hash
pocket @ 1.2', (1.0" x 1.5") whole articulated bivalve
@ 1.2', very dark gray (5Y-3/1), (CL).
LEAN CLAY, stiff, trace shell fragments, trace shell
hash, shell fragments are bivalve and gastropod
fragments up to 1.0", shell fragments increase with
depth in layer, very dark greenish gray (10Y-3/1),
(CL).
FAT CLAY, hard, trace rock fragments, trace shell
hash, rock fragments are fragments of lithified clay up
to 0.5", light olive brown (2.5Y-5/4), (CH).
FAT CLAY, hard, trace rock fragments, rock
fragments are fragments of partially lithified clay up to
0.5", (2.0" x 2.5") rock fragment pocket @ 4.3', (1.0" x
1.5") rock fragment pocket @ 6.8', color is mottled
light greenish gray (10Y-7/1) and reddish brown
(5YR-5/4), (CH).
FAT CLAY, hard, trace rock fragments, rock
fragments are fragments of lithified clay up to 0.08",
color is mottled reddish brown (5YR-5/4) and
greenish gray (10Y-6/1), (CH).
FAT CLAY, hard, trace rock fragments, rock
fragments are fragments of lithified clay up to 0.08",
color is mottled greenish gray (10Y-6/1) and reddish
brown (5YR-5/4), (CH).
FAT CLAY, hard, trace rock fragments, rock
fragments are fragments of lithified clay up to 0.08",
reddish brown (5YR-4/4), (CH).
No recovery.
End of Boring
-27.3
-28.7
-29.6
-36.8
-39.3
-41.8
-43.0
-43.7
1.3
2.7
3.6
10.8
13.3
15.8
17.0
17.7
T1
T2
T3
T4
T5
Sample #T1, Depth = 1.0'
Ave. Field Vane (tsf): 0.10
Sample #T2, Depth = 1.8'
Ave. Field Vane (tsf): 0.15
Sample #T3, Depth = 3.1'
Ave. Field Vane (tsf): 0.36
Sample #T4, Depth = 6.4'
Ave. Field Vane (tsf): 1.02
Sample #T5, Depth = 11.0'
Ave. Field Vane (tsf): 1.02
3. DRILLING AGENCY
2. BORING DESIGNATION
0
0.0 Ft.
LOCATION COORDINATES (ft)
TX GLO Region 1 Recon Geotechnical Sand Search
Jefferson, Chambers, Galveston and Brazoria Co.
15. DATE BORING
0.0
17 Ft.
WMM
10. COORDINATE SYSTEM/DATUM
11. MANUFACTURER'S DESIGNATION OF DRILL
DISTURBED
UNDISTURBED (UD)
18. SIGNATURE AND TITLE OF INSPECTOR
14. ELEVATION GROUND WATER
Texas State Plane South
COMPLETED
17.7 Ft.
STARTED
3.0 In.
X = 3,353,005 Y = 13,716,964
-26.0
VERTICAL
VERTICAL
INCLINED
0.0 Ft.
8. TOTAL DEPTH OF BORING
TXGLO1-VC-23-051
AUTO HAMMER
MANUAL HAMMER
APTIM
6. THICKNESS OF OVERBURDEN
CONTRACTOR FILE NO.
7. DEPTH DRILLED INTO ROCK
10-10-23
-26.0 Ft.
DIVISION
INSTALLATION
16. ELEVATION TOP OF BORING
17. TOTAL RECOVERY FOR BORING
NAVD88
5
APTIM SEAS VC-700 Vibracore
9. SIZE AND TYPE OF BIT
12. TOTAL SAMPLES
13. TOTAL NUMBER CORE BOXES
DEG. FROM
VERTICAL
5. DIRECTION OF BORING
BEARING
4. NAME OF DRILLER
HORIZONTAL
APTIM
DRILLING LOG
NAD 1983
1. PROJECT
10-10-23
%
REC.
Boring Designation
REMARKS
The USCS classification system defines silt as the
percent passing the No.200 (0.075 mm) sieve
SHEET 1
BOX OR
SAMPLE
CLASSIFICATION OF MATERIALS
Depths and elevations based on measured values
ELEV.
(ft)
LEGEND
DEPTH
(ft)
0
5
10
15
20
25
TXGLO1-VC-23-051
JUN 04
SAJ FORM 1836
OF 1 SHEETS
REGION1_RECON_GEOTECH.GPJ 3/25/24
O'
· ..__,, --
,.
1'
..
-----
'
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I
41
I
2'
.,,,,..
-
1
f
12'
r
!
;
i
-------
,,_
-
.
"--....-.1--
3'
'
13'
_ __,,_
______,,----
.,.,--_.
4'
""-
./
14'
1'-
--------
'
__,J
5'
1
10'
15'
---------
-
,
I
,
:
---r-
I
1
1
---
----..-::t
.,..
'
.-
-
-
l,
15'
16'
17'
18'
19'
20'
/
Texas General
Land Office
Texas GLO
---------
Region 1
Geotechnical
-
1
I
Reconnaissance
Survey
l
__.,..◄
TXGLOl-VC-2 3-051
Date Collected: 10/10/23
Top Elev. (ft NAVD88): - 26.0
Bottom Elev.(ft NAVD88): -43.0
Core Length (ft): 17.0
>
APTIM
6401 Congress Avenue, Suite 140
Boca Raton, FL 33487
(561)391-8102
CORE ID
SAMPLE DEPTH
(ft)
TORVANE
(kg/cm²)
TORVANE
(tsf)
TORVANE
(kpa)
DESCRIPTION
1
Mini Vane Shear Test Results
2.2
2.8
0.28
269.68
Very Stiff
4.8
1.5
0.15
147.10
Stiff
3.0
1.5
0.15
147.10
Stiff
4.0
5.0
0.51
490.33
Hard
5.1
1.5
0.15
147.10
Stiff
9.4
6.5
0.67
637.43
Hard
15.5
9.5
0.97
931.63
Hard
4.8
1.0
0.10
98.07
Stiff
8.1
1.5
0.15
147.10
Stiff
10.4
2.0
0.20
196.13
Very Stiff
11.7
2.0
0.20
196.13
Very Stiff
14.7
2.5
0.26
245.17
Very Stiff
1.0
1.0
0.10
98.07
Stiff
1.8
1.5
0.15
147.10
Stiff
3.1
3.5
0.36
343.23
Hard
6.4
