GI and Triaxial Method MCQ

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• What is the lateral pressure applied to the soil in the triaxial test?
  ক

  1.4 kg/mm2

  খ

  1.4 kg/cm3

  গ

  1.4 kg/cm2

  ঘ

  1.4 kg/mm3
• The parameters a, b, c and d for the group index computation are obtained as 23, 28, 10 and 12 respectively. The CVPD is found to be 450. Find the thickness of the surface and base of the pavement for the above details.
  ক

  29 cm

  খ

  39 cm

  গ

  30 cm

  ঘ

  20 cm
• Find the group index of the soil having the following details using the graphical method. Percentage passing 0.074 mm sieve = 55% Liquid limit = 45% Plastic limit = 31%
  ক

  6

  খ

  7

  গ

  5

  ঘ

  8
• The GI value can be calculated using group index charts.
  ক

  True

  খ

  False
• Find the group index of the soil having the following details: Percentage passing 0.074 mm sieve = 45% Liquid limit = 40% Plastic limit = 33%
  ক

  5

  খ

  1

  গ

  0

  ঘ

  2
• What indicates that the traffic is light traffic in case of group index design chart?
  ক

  CVPD < 20

  খ

  CVPD < 50

  গ

  AADT < 20

  ঘ

  AADT < 50
• The triaxial method is based on which equation?
  ক

  Boussinesq’s stress

  খ

  Boussinesq’s displacement

  গ

  Burmister’s stress

  ঘ

  Burmister’s displacement
• A higher value of the group index indicates a strong subgrade.
  ক

  True

  খ

  False
• What term is added to the modified triaxial equation in order to incorporate the elasticity of the pavement?
  ক

  Elasticity factor

  খ

  Stiffness factor

  গ

  Elasticity ratio

  ঘ

  Stiffness ratio
• The group index of the soil is found to be 5 and the traffic condition expected is medium traffic. What would be the combined thickness to be provided on the pavement for bearing the loads to ensure smooth conduct of traffic.
  ক

  24 cm

  খ

  38 cm

  গ

  34 cm

  ঘ

  28 cm
• Traffic coefficient is the factor that has been added to the triaxial equation to obtain the modified triaxial equation.
  ক

  True

  খ

  False
• A soil sample is subjected to sieve analysis and the following data is obtained: Percentage passing 0.074 mm sieve = 64% Liquid limit = 53% Plastic limit = 36%
  ক

  13

  খ

  11

  গ

  12

  ঘ

  10
• What data is required for computing thickness of pavement by group index method?
  ক

  Traffic volume and group index

  খ

  Traffic rate and group index

  গ

  Traffic intensity and group index

  ঘ

  Traffic index and group index
• Using the design charts for the group index, only the complete pavement thickness can be read.
  ক

  True

  খ

  False
• The triaxial compression test is used to determine the ______ of various materials.
  ক

  Shear strength

  খ

  Modulus of elasticity

  গ

  Moisture content

  ঘ

  Compressive stress
• What test can be carried out to obtain the group index?
  ক

  Specific gravity

  খ

  Density

  গ

  Sieve analysis

  ঘ

  Particle index
• Who proposed the triaxial method of design for flexible pavements?
  ক

  L. A Barber and E. S Palmer

  খ

  F. M Hveem and R. M Carmany

  গ

  L. A Palmer and E. S Barber

  ঘ

  F. M Carmany and R. M Hveem
• What is the range of values of group index for a good soil?
  ক

  0 to 1

  খ

  2 to 4

  গ

  5 to 9

  ঘ

  10 to 20