Soil Mechanics Boster Quiz -3

Liquidity index for a soil with water content w, plastic limit W_P and liquid limit W_L is given by the expression

Black cotton soil is unsuitable for foundations because

liquid limit and plastic limit of a soil are 65% and 31%, respectively. The natural water content is 25%. It can be inferred that the soil is in

A constant head permeability test was run on sand sample 16 cm length and 60 cm² cross-sectional area. Porosity was 40% under a constant head of 30 cm. The discharge was found 45 cm³ in 18 second. Calculate the discharge velocity.

A saturated sample of soil has a water content of 35%. Adopting G = 2.70, what would be the approx. dry unit weight in kN/m³?

Hygroscopic water is defined

A soil has an angle of shearing of 30° and cohesion of 35 kN/m². If the specimen of this soil is subjected to a tri-axial compression test, then the value of lateral pressure in the cell for failure to occur at total stress of 300 kN/m² will be

If S is the shear strength, C is cohesion and ϕ is angel of internal friction, σ is the normal stress at failure, then coulomb’s equation for shear strength of the soil can be represented by

Soil samples A and B have void ratios of 0.5 and 0.7 respectively. If 1.5 m³ of soil sample A and 1.7 m³ of soil sample B are mixed to form sample C having a volume of 3.2 m³, which one of the following correctly represents the porosity of sample C?

The permeability of a given soil is