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MODEL 4800 SERIES VW EARTH PRESSURE CELLS | TEMPERATURE EFFECT ON EARTH PRESSURE AND CONCRETE STRESS CELLS | 25
Some typical values of the various parameters are:
Liquid
Oil
Mercury
Water
Glycol
50/50 Glycol/Water
Embedment Material
Plastic Clay
Soil
Sand
Compacted Ottawa Sand
Weathered Rock
Concrete
TABLE 6: Typical Values of Various Cell Parameters
C.2 EXAMPLES
For an oil-filled cell, nine inches diameter, and D = 0.060 inches, totally
embedded in:
(For contact pressure cells, multiply the values for P by two.)
Plastic Clay:
E = 3000 psi
ν = 0.3
o
P = 0.042 psi /
C
Soil, medium stiffness:
E = 10000 psi
ν = 0.3
o
P = 0.138 psi /
C
Coarse Sand:
E = 50000 psi
ν = 0.3
o
P = 0.69 psi /
C
For an oil-filled concrete stress cell, nine inches in diameter, and D=0.020 inches
totally embedded in:
Concrete:
6
E = 5 x 10
psi
ν = 0.25
o
P = 22.7 psi /
C
Completely rigid medium:
o
P = 210 psi /
C
For the same cell, filled with mercury instead of oil:
Concrete:
o
P = 5.8 psi /
C
Completely rigid medium:
o
P = 650 psi /
C
K x 10-6 / °C
700
180
170
650
400
E x 106 psi
0.003
0.001 to 0.02 [Ref 2]
0.02 to 0.06 [Ref 3]
0.2
0.04 to 0.11 [Ref 4]
5.0
6:
G x 106 psi
0.3
3.6
0.3
0.26
0.28
ν
0.25 to 0.45
0.28 to 0.35
0.25
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