Soil Mechanics & Foundation

81) which is more pervious? Where, Void ratio of soil ‘A’ = 0.80 and Void ratio of soil ‘B’ = 1.20

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soil B

82) A sand has e = 0.8 and another clay has e = 1.2 which is more pervious?

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sand

83) Which of the following soils has largest permeability?

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Gravel

84) Select the correct statement. The permeability is

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Directly proportional to unit weight, inversely proportional to viscosity

85) Generally, when compacted the GW type of soils will be

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pervious

86) Physical properties of a permeant which influences the permeability are

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both viscosity and unit weight

87) Due to rise in temperature, the unit weight and viscosity of the permeant fluid are reduced to 90% and 60% respectively. If other things remain constant, the coefficient of permeability

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increases by 50%

88) Units of co-efficient of permeability

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cm/ s

89) Permeability of soil varies

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as square of grain size

90) The coefficient of permeability is proportional to void ratio as

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e3/1 + e

Subject Notes

Objective Box

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