☰ Concrete Structure (Civil Engineering) - MCQs

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Q19.

Percentage of steel for balanced design of a singly reinforced rectangular section by limit state method depends on :

  • A. characteristic strength of concrete
  • B. yield strength of steel
  • C. modulus of elasticity of steel
  • D. all of these
    ✍ Discuss    
Q20.

The purpose of reinforcement in prestressed, concrete is to :

  • A. provide adequate bond stress
  • B. resist tensile stresses
  • C. impact initial compressive stress in concrete
  • D. all of these
    ✍ Discuss    
Q21.

In reinforced concrete, pedestal is defined as a compression member,whose effective length does not exceed its least lateral dimension by :

  • A. 12 times
  • B. 3 times
  • C. 16 times
  • D. 8 times
    ✍ Discuss    
Q22.

Select the incorrect statement :

  • A. The loss of prestress is more in pretensioning system than in posttensioning system
  • B. Pretensioning syatem has greater certainty about its durability
  • C. For heavy loads and large spans in building or bridges, post -tensioning system is cheaper than pretensioning system
  • D. none of these
    ✍ Discuss    
Q23.

Flexural shear failure in a reinforced concrete beam :

  • A. occurs under large bending moment and less shear force
  • B. results in cracks which are normally at 90 degree with the horizontal
  • C. both (a) and (b)
  • D. none of these
    ✍ Discuss    
Q24.

Flexural shear failure in a reinforced concrete beam :

  • A. occurs under large bending moment and less shear force
  • B. results in cracks which are normally at 90 degree with the horizontal
  • C. both (a) and (b)
  • D. none of these
    ✍ Discuss    
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