Description: Test - 4 | |

Number of Questions: 20 | |

Created by: Yashbeer Singh | |

Tags: Test - 4 Soil Mechanics Civil Engineering - CE |

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Water is flowing through the permeability apparatus as shown in the figure. The coefficient of permeability of the soil is k m/s and the porosity of the soil sample is 0.50.

The total head, elevation head and pressure head in metres of water at the point R shown in the figure are respectively

Water is flowing through the permeability apparatus as shown in the figure. The coefficient of permeability of the soil is km/s and the porosity of the soil sample is 0.50.

What are the discharge velocity and seepage velocity through the soil sample?

The ground conditions at a site are as shown in the figure. The water table at the site which was initially at a depth of 5 m below the ground level got permanently lowered to a depth of 15 m below the ground level due to pumping of water over a few years. Assume the following data:

i. unit weight of water = 10 kN/m^{3}

ii. unit weight of sand above water table = 8 kN/m^{3}

iii. unit weight of sand and clay below the water table = 20 kN/m^{3}

iv. coefficient of volume compressibility = 0.25 m^{2}/MN

What is the compression of the clay layer in mm due to the lowering of the water table?

The ground conditions at a site are as shown in the figure. The water table at the site which was initially at a depth of 5 m below the ground level got permanently lowered to a depth of 15 m below the ground level due to pumping of water over a few years. Assume the following data

i. unit weight of water = 10 kN/m^{3}

ii. unit weight of sand above water table = 8 kN/m^{3}

iii. unit weight of sand and clay below the water table = 20 kN/m^{3}

iv. coefficient of volume compressibility = 0.25 m^{2}/MN

What is the change in the effective stress in kN/m^{2} at mid-depth of the clay layer due to the lowering of the water table?

^{2} at a point 6.0 m below and 4.0 m away from the load will be

^{2}. All conditions remaining the same, settlement of a 1 m square footing will be

^{3} and the hydraulic gradient is 0.3. The resultant body force on the soil mass is

^{3}. Its effective angle friction is 35 degrees. If the desired factor of safety is 1.5, the safe angle of slope for this soil, when seepage occurs at and parallel to the surface, will be

In an undrained triaxial test on a saturated clay, the Poisson’s ratio is

_{s}) is 2.56, the void ratio of the soil is

_{1} and D_{2} are resting on the surface of the same purely cohesive soil. The ratio of their gross ultimate bearing capacities is

_{sat} is 19 kN/m^{3}. The unit weight of water is g_{w}. If now the water table rises to the surface, the effective stress at a point P on the interface will

^{3} and optimum moisture content of 12%. A contractor during the construction of core of an earth dam obtained the dry density 15.2 kN/m^{3} and water content 11%. This construction is acceptable because.

Which of the following statement is NOT true in the context of capillary pressure in soils ?

Root time method is used to determine

Negative skin friction in a soil is considered when the pile is constructed through a