DIRECT SHEAR TEST

Objective

To determine the shearing strength of the soil using the direct shear apparatus. 

NEED AND SCOPE

In many engineering problems such as design of foundation, retaining walls, slab bridges, pipes, sheet piling, the value of the angle of internal friction and cohesion of the soil involved are required for the design. Direct shear test is used to predict these parameters quickly. The laboratory report cover the laboratory procedures for determining these values for cohesionless soils. 

Vane Shear Test

OBJECTIVE 
To find shear strength of a given soil specimen.
NEED AND SCOPE

The structural strength of soil is basically a problem of shear strength.
Vane shear test is a useful method of measuring the shear strength of clay. It is a cheaper and quicker method. The test can also be conducted in the laboratory. The laboratory vane shear test for the measurement of shear strength of cohesive soils,
is useful for soils of low shear strength (less than 0.3 kg/cm²) for which triaxial or unconfined tests can not be performed. The test gives the undrained strength of the soil. The undisturbed and remoulded strength obtained are useful for evaluating the sensitivity of soil.

PROCTOR TEST

SCOPE

This method covers the determination of the relationship between the moisture content and density of soils compacted in a mould of a given size with a 2.5 kg rammer dropped from a height of 30 cm.

APPARATUS