If the soil sample has porosity of 30% and specific gravity of solids G=2.7, then its dry unit weight will be ______

Civil Engineering : Soil Mechanics - Quiz(MCQ)

18.350 kN/mÂ³

18.545 kN/mÂ³

18.535 kN/mÂ³

18.640 kN/mÂ³

Correct Answer : 18.535 kN/mÂ³

Explanation : Porosity n=30%=0.3
Specific gravity G=2.7
Voids ratio e = n / (1-n)
e=0.3/(1-0.3)=0.429
Dry unit weight γd = Gγw/(1-e)
γd=(2.7*9.81)/(11+0.429)
γd=18.535 kN/m³

Recently Updated in Soil Mechanics Questions

The property of a soil which allows it to be deformed rapidly without rupture, elastic rebound and also a volume change, is known______.

ductility

porosity

permeability

plasticity

Correct Answer : Option (D) : plasticity

During seepage through a soil, direction of seepage is always_______.

perpendicular to stream lines

parallel to equipotential lines

perpendicular to equipotential lines

None of the above

Correct Answer : Option (C) : perpendicular to equipotential lines

The ratio of the weight of water to the weight of solids in a given mass of soil, is known_______.

porosity

water content

void ratio

specific gravity

Correct Answer : Option (B) : water content

Civil Engineering MCQ's

Building Materials

Building Construction

Strength of Materials

Hydraulics

RCC Structures Design

Steel Structure Design