8/2/2019 PRACTICAL 2 Constant Head Permeability Test
1/2
PRACTICAL 2 Constant Head Permeability Test
2.
Permeability
( )
3.
Viscosity
The average temperature was 24.27C, rounding up to 24.5C and
using table 5
shows as 0.8995
8/2/2019 PRACTICAL 2 Constant Head Permeability Test
2/2
4.
Dry Density (g/cm^3)
5.
Sieve Analysis Permeability = 0.576e-3
Constant Head Permeability = 94.4e-3
In the sieve practical the material was poorly graded uniform
sand (SP), which
would have a high permeability as sand contains that structural
property. In the
example of Constant head the material was compacted and put
through a
vacuum to expel air. This compacting would lower the
permeability, as there is
less space to pass through.
6.
Some applications of the coefficient of permeability would be
for dams where
factors such as water seepage could hinder the structural
integrity. Thecoefficient can be used to calculate retaining walls
and can even be used to help
