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Q1. | Rankine's theory of earth pressure assumes that the back of the wall is |

A. | plane and smooth [Wrong Answer] |

B. | plane and rough [Wrong Answer] |

C. | vertical and smooth [Correct Answer] |

D. | vertical and rough [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss it below :Ahmad Elzwai Said on 2020-09-09 01:15:54Which of the following is not a characteristic of mat foundations? Ahmad Elzwai Said on 2020-09-09 01:11:45The intensity of
active earth pressure at a depth of 10 meters in dry cohesionless sand with an
angle of internal friction of 30° and with a unit weight of 1.8 t/m !! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ For a base failure of a slope, depth factor.

Df = 1

Df < 1

Df > 1

none of these.

⇒ Number of piles required to support a column, is.

1

2

3

4

⇒ Pick up the correct statement from the following:

Failure plane carries maximum shear stress

Failure plane does not carry maximum shear stress

Failure plane carries shear stress equal to maximum shear stress

None of these.

⇒ Pick up the correct statement from the following:

The dry density reduces by addition of water after attaining optimum moisture content

The line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus

Well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils

All the above. .

⇒ Pick up the incorrect statement from the following:

The smaller the size of the pores, the higher the water can rise above the water table.

Below the water table, the pore water may be static.

The hydrostatic pressure depends on the depth below the water level.

None of these.

⇒ If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is

90°

45°

22.5°

0°

⇒ You are given a sample of soil containing coarse grains to determine its water content, you will use.

pycnometer

oven-drying method

calcium carbide method

alcohol method.

⇒ If the back fill is having a uniform surcharge of intensity

*q*per unit area, the lateral pressure will be.

q times the lateral pressure within the surface

1/q times the lateral pressure within the surface

equal to a fill of height Z equal to q/r, where r is the density of the backfill

none of these.

⇒ A cohesive soil on drying

Expands

Shrinks

Swells

Changes colour

⇒ Pick up the clay soil group which does not swell when wet from the following :

Kaolinite group

Mite group

Vermiculite group

Montrorillonite group.

⇒ If the coefficient of the active pressure

*K*is 1/3, the coefficient of passive pressure

_{a}*K*, is.

_{p}1/3

2/3

3/2

3

⇒ The consolidation time for soils.

increases with increasing compressibility

decreases with increasing permeability

is independent of the magnitude of the stress change.

All the above.

⇒ The factor which affects the compaction, is.

moisture content

compacting content

type of soil

All the above.

⇒ A soil has bulk density 2.30 g/cm

^{3}and water content 15 per cent, the dry density of the sample, is.

1.0 g/cm2

1.5 g/cm3

2.0 g/cm3

2.5 g/cm3

⇒ Isolation of machine foundation is

Undesired

Desired

Both (A) and (B)

Not predicable

⇒ Highway Research Board (HRB) classification of soils is based on

particle size composition

plasticity characteristics

both particle size composition and plasticity characteristics

none of the above

⇒ Example of spread foundation is

Cantilever footing

Inverted arch footing

Pier foundation

Roth (A) and (B)

⇒ The ratio of settlement at any time 't' to the final settlement, is known as.

co-efficient of consolidation

degree of consolidation

consolidation index

consolidation of undisturbed soil.

⇒ If the failure of a finite slope occurs through the toe, it is known as.

slope failure

face failure

base failure

toe failure.

⇒ Through a point in a loaded soil mass, there exists

*n*typical planes mutually orthogonal on which the stress is wholly normal and no shear stress acts, if

*n*is.

1

2

3

4

⇒ The angle between the directions of the failure and the major principal plane, is equal to.

90Â° + effective angle of shearing resistance

90Â° + half of the angle of shearing resistance

45Â° - half of the angle of shearing resistance

45Â° + half of the angle of shearing resistance.

⇒ The change of moisture content of soils, changes the.

value of the angle of repose

amount of compaction required

cohesive strength of soil

all the above.

⇒ Rise of water table in cohesionless soils upto ground surface reduces the net ultimate bearing capacity approximately by

25%

50%

75%

90%

⇒ The shear strength of a soil in the liquid limit state is

Zero

Very small

Reasonable

Close to saturated soil strength

⇒ For determining the ultimate bearing capacity of soil, the recommended size of a square bearing plate to be used in load plate test should be 30 to 75 cm square with a minimum thickness of.

5 mm

10 mm

20 mm

25 mm

⇒ The soil transported by wind is called

Aeolian soil

Marine soil

Alluvial soil

Lacustrine soil

⇒ A coarse-grained soil has a voids ratio 0.75, and specific gravity as 2.75. The critical gradient at which quick sand condition occurs, is.

0.25

0.50

0.75

1.00

⇒ The plasticity of fine soils may be assessed by means of.

dry strength test

toughness test

dilatancy test

all of these.

⇒ The seepage force in a soil, is.

perpendicular to the equipotential lines

proportional to the exit graident

proportional to the head loss

all the above.

⇒ The liquidity index is defined as a ratio expressed as percentage of.

plastic limit minus the natural water content, to its plasticity index

natural water content minus its plastic limit to its plasticity index

natural water content plus its plastic limit to its plasticity index

liquid limit minus the natural water content to the plasticity index.