BS 1377 Part 6 1990
Triaxial cell permeability test
Location
Job Ref:
BH No.
Soil Description
Sample No.
Depth
Test method
BS1377: Part 6:
1990: 6 Constant head permeability test in triaxial cell
Date
Type of specimen
Undisturbed/compacted*
Method of preparation
Flow conditions
Vertical upwards/downwards*
TEST SPECIMEN
Diameter
D mm
Nominal effective stress
kPa
Area
A mm
2
Cell pressure
s
3
kPa
Length
mm
Back pressure
p
2
kPa
Density
p
Mg/m
3
Pressure difference
(
p
1
-
p
2
) kPa
Moisture Content
%
Inlet pressure
p
1
kPa
Dry Density
p
Mg/m
3
Mean effective stress
kPa
Method of saturation
s
3
=
s
3
- 1/2
(
p
1 +
p
2)
Hydraulic gradient
Final
B
value
FLOW READINGS
Clock
Elapsed
Volume change indicator
time
Time
inlet
outlet
Test temperature
0
C
reading
difference
reading
difference
Correction
t
Q
1
Q
2
factor R
t
min
mL
mL
Remarks
0
0
0
Operator
Checked
Approved
Form 6P