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[B] Permeability Test
1.83
cm
2
(1)
Cross-sectional area of standpipe, a
15.80
(2)
Length of soil specimen in permeameter, L
cm
81.07
cm
2
(3)
Cross-sectional area of soil specimen, A
Trial
Head,
Head,
Time,
Temperature,
Permeability
Ratio of
Permeability
no.
h
1
h
2
t
T
at T°C,
Viscosity at T°C
at 20°C,
(cm)
(cm)
(s)
(°C)
k
T
(cm/s)
Viscosity at 20°C
k
20
(cm/s)
h
1
h
2
2.3aL
At
(1)
(2)
(3)
(4)
(5)
(6 )
log
(7)
(8)
(see Table 18-2)
2.222
10
2
2.118
10
2
1
150.0
20.0
32.3
22
0.9531
2.202
10
2
2.099
10
2
2
150.0
20.0
32.6
22
0.9531
2.264
10
2
2.158
10
2
3
150.0
20.0
31.7
22
0.9531
1
3
(2.118
2.099
2.158)
10
2
Average k
20
°
c
k
20
°
c
2.125
10
2
cm/s
280
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