The ultimate bearing capacity of soil supporting a square footing of size 3 m × 3 m will not be affected if the water table is located below the base of the footing at a depth of at least:

A deposit of fine sand has porosity n and specific gravity of soil solids G. The hydraulic gradient of the deposit required to develop a boiling condition (quick sand condition) is given by:

The triaxial compression test is used to determine which property of soil?