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Design Of Concrete Structures: Nuclear Quiz 3

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Question 1

A beam is subject to a torque of 20 kNm. If shear force is 170 kN then amount of shear force must be taken by stirrups to ensure stability of beam.

(Design shear strength = 0.48 N/mm2) (use LSM)

Question 2

Match the following-

Type of shear failure:

P) Diagonal tension failure

Q) Flexural shear failure

R) Diagonal compression failure

Cause of failure:

1) Due large bending moment and less shear force

2) Due to large shear force

3) Due large shear force and less bending moment

Question 3

The shear resistance of rectangular beams without shear reinforcement depends upon the following factors
1). Grade of concrete
2). Percentage and grade of longitudinal compressive reinforcement
3). Percentage and grade of longitudinal tensile reinforcement
4). Axial tensile force
Which one of the following statements are CORRECT?

Question 4

The maximum shear stress (qmax) in a rectangular beam is

Question 5

Read the following statement
I. For deformed bars conforming to IS 1786, Permissible values of bond stress shall be increased by 60%
II. For bars in compression, the Permissible values of bond stress in tension shall be increased by 25%.
III.  For bars in compression, the Permissible values of bond stress in tension shall be increased by 60%
Which of the below options is correct

Question 6

The spacing of transverse reinforcement is:
(i) Least lateral dimension 
(ii) 16 x smallest dia used in longitudinal reinforcement
(iii) 50 x diameter of transverse reinforcement
(iv) 200 mm

Which is correct?

Question 7

The lap length for bars in direct tension will be?

Assume diameter of bar = 16 mm

Development length = 500 mm

Question 8

The lap length for bars in flexural tension will be? Diameter of bar = 12 mm and development length = 300 mm.

Question 9

For reinforced concrete slabs, the minimum nominal cover provided is:
(1) 25 mm
(2) diameter of bar
(3) spacing between the bars

Question 10

A column resting over an isolated rectangular footing of size 3m × 2m is designed for some value of direct compressive load and to bear such load 20 numbers of 100 mm diameter bars are needed. The number of bars that should be used in central band to encounter dominating bending effects are
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Oct 25ESE & GATE CE