Transmission Length MCQ

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• Estimate the transmission length at the ends of a pretensioned beam prestressed by 7mm diameter wires. Assume the cube strength of concrete at transfer as 42n/mm2 (adopt empirical method)?
  ক

  550mm

  খ

  610mm
• According to Ros, the transmission length of smooth round wires of 1.5-5mm diameter varies approximately from __________
  ক

  1500-600

  খ

  100-300

  গ

  200-100

  ঘ

  1100-800
• The Shear bonding is obtained by cold rolling of __________
  ক

  Square indentations

  খ

  Rectangle indentations

  গ

  Elliptical indentations

  ঘ

  Circular indentations
• The surface of drawn round wires is roughened by __________
  ক

  Pickling

  খ

  Bending

  গ

  Bonding

  ঘ

  Tensioning
• The transmission length prevailing at the time of transfer does not remain __________
  ক

  Zero

  খ

  Constant

  গ

  Without reaction

  ঘ

  With reaction
• Which one of the empirical formula is used for predicting transmission length?
  ক

  Lt = ((fcu)1/2 x 103/β)1/2

  খ

  Lt = ((fcu)1/2 x 103/β)

  গ

  Lt = (fcu)1/2 x 103

  ঘ

  Lt = (fcu)1/2
• The transmission length is predicted considering the equation parameters varying from __________
  ক

  90 to 150ϕ

  খ

  100 to 200ϕ

  গ

  80 to 160ϕ

  ঘ

  20 to 60ϕ
• The transmission length mainly depends up on how many factors?
  ক

  8

  খ

  4

  গ

  2

  ঘ

  12
• The transmission length required to attain uniform stress distribution in prestress member is acquired through __________
  ক

  Zero bond stress

  খ

  Middle bond stress

  গ

  Safe bond stress

  ঘ

  Edge bond stress