☰ Concrete Structure (Civil Engineering) - MCQs

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Q7.

IS : 1343-1980 limits the minimum characteristic strength of prestressed concrete for post tensioned works and pretension works as:

  • A. 25 MPa, 30 MPa respectively
  • B. 25 MPa, 35 MPa respectively
  • C. 30 MPa, 35 MPa respectively
  • D. 30 MPa, 40 MPa respectively

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Q8.

The partial factor of safety for concrete as per IS :456-2000 is :

  • A. 1.50
  • B. 1.15
  • C. 0.87
  • D. 0.446

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Q9.

Lateral ties RC column are provided to resist :

  • A. bending moment
  • B. shear
  • C. buckling of longitudinal steel bars
  • D. both bending moment and shear

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Q10.

For maximum sagging bending moments in a given of a multiple span beam:

  • A. very span as well as alternate spans are loaded
  • B. adjacent spans are loaded
  • C. spans adjoining this span are loaded
  • D. adjacent spans are unloaded and next spans are loaded

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Q11.

In post-tension prestressed concrete beam, the end block zone is the between the end of the beam and the section where :

  • A. no lateral stresses exist
  • B. only longitudinal stress exist
  • C. only shear stresses exist
  • D. the shear stresses are maximum

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Q12.

According to Whitnery's theory, the maximum depth of concrete stress block in a balanced RCC beam section of depth 'd' is :

  • A. 0.3 d
  • B. 0.43 d
  • C. 0.5 d
  • D. 0.53 d

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