Soil Shear Strength Quiz

Name the two parameter of the soil shear strength; one is cohesion, the other one is (a)  

Cohesive soil such as silt and clay has internal friction angle.

• TRUE

• FALSE

Soil generally fails in ___________________

• normal stress

• shear

• shear strength

Failure plane or failure surface is representation of shear failure.

• TRUE

• FALSE

τ = c + σ tan Φ

• is a Mohr Coulomb Criterion

• shear strength with two parameters

• c is cohesion

• Φ is internal friction angle

• all of them

Major principle stress is minor principle stress plus the surcharge

• TRUE

• FALSE

The deviator stress developed in the proving ring, through the applied pressure is equal to are____________

• σ1 + σ3

• σ1 – σ3

• σ2 – σ3

• σ2 + σ1

Why consolidation are important engineering parameters in construction?

• To predict settlement

• To strengthen soil conditions

• To reduce cost of construction

• All above

Select the incorrect statement. Effective angle of shearing resistance

• increases as the size of particles increases

• increases as the soil gradation im-proves

• is limited to a maximum value of 45 degrees

• is rarely more than 30 degrees for fine grained soil

The shear strength of a soil is ____

• is directly proportional to the angle of internal friction of the soil

• is inversely proportional to the angle of internal friction of the soil

• decreases with increase in normal stress

• decreases with decrease in normal stress