Analysis of Well Foundation MCQ

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• According to Terzaghi and Peck, the ultimate bearing capacity can be determined by which of the following expression?
  ক

  Q f = Q p + 2πRfs Df

  খ

  Q p = πR2(Q p + 2πRfs Df)

  গ

  Q p = 2πRfs Df

  ঘ

  All of the mentioned
• When a rigid well starts moving parallel, it transforms the soil in to __________
  ক

  Active and passive states

  খ

  Rigid state

  গ

  Loose sand

  ঘ

  All of the mentioned
• Coefficient of horizontal soil reaction m, depends on _________
  ক

  Shape of the area carrying load and Nature of soil

  খ

  Skin friction

  গ

  None of the mentioned

  ঘ

  All of the mentioned
• The maximum depth of scour at the nose of pier is _______ Lacey’s value.
  ক

  Twice

  খ

  Thrice

  গ

  Half

  ঘ

  None of the mentioned
• The analysis of well foundation is done based on the assumptions of _________
  ক

  Banerjee and Gangopadhyay

  খ

  Lacey

  গ

  None of the mentioned

  ঘ

  All of the mentioned
• What are the horizontal forces that are prone to act on a well foundation?
  ক

  Wind force

  খ

  Earth pressure

  গ

  Seismic force

  ঘ

  All of the mentioned
• For piers and abutment, the minimum depth of embedment below the scour level should be taken as _________ m.
  ক

  2.0

  খ

  1.2

  গ

  3

  ঘ

  1.5
• The grip length of well is taken as _________ below the scour level in roads.
  ক

  ½ R

  খ

  1½ R

  গ

  1/3 R

  ঘ

  1 R
• For alluvial soil, the normal scour depth can be calculated by ___________ formula.
  ক

  Rankine’s formula

  খ

  Lacey’s formula

  গ

  Converse Labarre formula

  ঘ

  Terzaghi’s formula
• The selection of the depth of a well is based on which of the following criteria?
  ক

  Adequate embedded length should be provided and The well should rest on strata of adequate bearing capacity

  খ

  The perimeter of the well should be minimum

  গ

  None of the mentioned

  ঘ

  All of the mentioned