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MCQs

Total Questions : 1549 | Page 6 of 155 pages
Question 51. A pre-stressed rectangular beam which carries two concentrated loads W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is
  1.    WL/P
  2.    WL/2P
  3.    WL/3P
  4.    WL/4P
 Discuss Question
Answer: Option C. -> WL/3P
Question 52. According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is
  1.    Half of the width of the slab
  2.    Two-third of the width of the slab
  3.    Three-fourth of the width of the slab
  4.    Four-fifth of the width of the slab
 Discuss Question
Answer: Option C. -> Three-fourth of the width of the slab
Question 53. If the permissible compressive stress for a concrete in bending is C kg/m², the modular ratio is
  1.    2800/C
  2.    2300/2C
  3.    2800/3C
  4.    2800/C²
 Discuss Question
Answer: Option C. -> 2800/3C
Question 54. In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at
  1.    Less loaded column
  2.    More loaded column
  3.    A point of the maximum shear force
  4.    A point of zero shear force
 Discuss Question
Answer: Option D. -> A point of zero shear force
Question 55. On piles, the drop must be at least
  1.    80 cm
  2.    100 cm
  3.    120 cm
  4.    140 cm
 Discuss Question
Answer: Option C. -> 120 cm
Question 56. If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least
  1.    WL/P
  2.    WL/2P
  3.    WL/3P
  4.    WL/4P
 Discuss Question
Answer: Option D. -> WL/4P
Question 57. A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm² steel. If the modular ratio (m) is 15, the depth of the neutral axis, is
  1.    20 cm
  2.    25 cm
  3.    30 cm
  4.    35 cm
 Discuss Question
Answer: Option C. -> 30 cm
Question 58. As per IS : 456, the reinforcement in a column should not be less than
  1.    0.5% and not more than 5% of cross-sectional area
  2.    0.6% and not more than 6% of cross-sectional area
  3.    0.7% and not more than 7% of cross-sectional area
  4.    0.8% and not more than 8% of cross-sectional area
 Discuss Question
Answer: Option D. -> 0.8% and not more than 8% of cross-sectional area
Question 59. If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than
  1.    4 mm
  2.    5 mm
  3.    6 mm
  4.    8 mm
 Discuss Question
Answer: Option C. -> 6 mm
Question 60. The diameter of main bars in R.C.C. columns, shall not be less than
  1.    6 mm
  2.    8 mm
  3.    10 mm
  4.    12 mm
 Discuss Question
Answer: Option D. -> 12 mm

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