Sols - Détermination de la perméabilité - Type Lefranc
1.1 Décrit la façon de déterminer le coefficient de perméabilité d'un sol,
autour d'une cavité pratiquée sous l'extrémité d'un tubage.
1.2 L'essai consiste à provoquer un écoulement par gravité, dans le sol, à
partir d'une cavité de forme définie, appelée lanterne, remplie d'un matériau
perméable. L'essai peut être effectué lorsque la cavité est…
Soils - Determination of the Density of Soil in Place Using a Flexible Membrane
(Water Volume)
Prescribes the method to be used to determine the in-place density of soils.
This operating procedure is particularly suitable for soils containing
particles with a diameter of 80 mm or more.
Soils - Determination of Minimum and Maximum Densities of Cohesionless Soils -
Vibrating Table Test
Determines the testing methods that shall be used to determine minimum and
maximum densities of cohesionless soils in the laboratory by pouring the loose
material and by densification of the material using vibration respectively.
These two densities are used to calculate the relative density index.
Soils - Determination of Permeability at the End of a Casing
Describes the method used to determine the coefficient of permeability of a
soil at the end of a casing.
The test consists in injecting water using gravity, into a soil through the
lower opening of a drilling casing. This opening is located below the local
piezometric level. Two test methods are described in the standard:
a) the constant head method;
b) the variable falling head…
Soils - Determination of Permeability by the Lefranc Method
1.1 Describes the method used to determine the coefficient of permeability of
a soil around a cavity opened under the end of a casing.
1.2 The test consists in causing gravity flow in the soil from a cavity of a
given shape, known as the lantern, filled with a permeable material. The test
must be carried out when the cavity is located below the local piezometric
level.
1.3 Three…
