Soil Mechanics and Foundation Engineering - Civil Engineering Questions and Answers

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Pick up the correct statement from the following:

The permeability of the coarse-grained soils may be reduced by grouting.

The process of injecting fluids (i.e. grouts) into the pores space of the soil, is called grouting.

The grouting increases the soil strength.

All the above.

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A soil sample of mass specific gravity 1.92, has a moisture content 30%. If the specific gravity of solids is 2.75, the void ratio, is

0.858

0.860

0.862

0.864

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

porosity

specific gravity

void ratio

water content.

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During seepage through a soil, direction of seepage is always

parallel to equipotential lines

perpendicular to stream lines

perpendicular to equipotential lines

none of these.

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The slip at critical angle, is generally known

δ 1-line

rupture plane

slip plane

all the above

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

porosity

plasticity

permeability

ductility.

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According to Rankine's fromula, the minimum depth of foundation

h = \( \frac { P } { W } \) [\(\frac { 1 - sinØ } { 1+sin Ø}]^2\)]

h = \( \frac { W } { P } \)\(\frac { 1 - sinØ } { 1+sin Ø}]^2\)

h = \( \frac { P } { W } \)\(\frac { 1 - sinØ } { 1+tan Ø}]^2\)

h = \( \frac { P } { W } \)\(\frac { 1 - tanØ } { 1+tan Ø}]^2\)