100
100
90
90
80
80
70
70
60
60
50
50
40
40
30
30
20
20
10
10
0
0
100
10
1
0.1
0.01
0.001
100
10
1
0.1
0.01
0.001
Grain Size (mm)
Grain Size (mm)
% +3"
% Gravel
% Sand
% Silt
% Clay
% +3"
% Gravel
% Sand
% Silt
% Clay
0.0
2.4
86.5
6.2
4.9
0.0
1.5
86.8
6.3
5.4
LL
PI
D85
D60
D50
D30
D15
D10
Cc
Cu
LL
PI
D85
D60
D50
D30
D15
D10
Cc
Cu
0.387 0.245 0.219 0.175 0.101 0.0643 1.95
3.8
0.376 0.244 0.216 0.168 0.125 0.0167 6.99
14.6
Material Description
USCS
AASHTO
Material Description
USCS
AASHTO
Poorly Graded Sand with Silt
SP-SM
A24
Pentagon Trail
SP-SM
A24
Pentagon Trail Station, Slash Sect., Inside Rut
b. Gradation curve.
c. Plan.
Elevation
m
ft
110
33
105
32
31
100
30
29
95
28
90
0
50
100
150
200
250
300
350
400
450
Station
d. Profile.
Figure A3 (cont'd). Pentagonal loop trail.
32
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