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Multiple Choice Questions (MCQ) On Design of R.C.C. Structuresc (Part 3)

 21. According to the IS code 456:2000, the maximum spacing between the vertical stirrups should not be greater than  ..........

a) 0.7 d or 200 mm whichever is less

b) 0.75 d or 200 mm whichever is less

c) 0.7 d or 300 mm whichever is less

d) 0.75 d or 300 mm whichever is less

Answer: d) 0.75 d or 300 mm whichever is less

 

 22. Following is the forms of shear reinforcement used in beam  ..........

a) Vertical stirrups

b) Inclined stirrups

c) Bent up bars

d) All the above

Answer: d) All the above

 

 23. For M 20 grade concrete value of design bond stress for plain bars in tension is ..........

a) 1.6

b) 1.2

c) 1.3

d) 1.5

Answer: b) 1.2

 

 24. According to IS code, Maximum shear stress resisted by M 20 concrete is  ..........

a) 2.5 N/mm2

b) 2.8 N/mm2

c) 3.1 N/mm2

d) 3.5 N/mm2

Answer: b) 2.8 N/mm2 

 

 25. The shear reinforcement in the R.C.C. is provided to resist..........

a) Vertical shear

b) Horizontal shear

c) Diagonal compression

d) Diagonal tension

Answer: d) Diagonal tension

 

 26. The shear reinforcement in R.C.C. is provided when ..........

a) The design shear strength of concrete exceeds nominal shear stress

b) Nominal shear stress exceeds the design shear strength of concrete

c) Nominal shear stress equal to the design shear strength of concrete

d) All the above

Answer:  b) Nominal shear stress exceeds the design shear strength of concrete

 

 27. Anchorage value of 45 degree bend for 16 mm diameter bar is.........

a) 16 mm

b) 32 mm

c) 64 mm

d) 80 mm

Answer:  c) 80 mm

 

 28. According to IS 456:2000, overlapping length of bars in flexural tension should be..... 

a) Greater of two times of development length or thirty times of diameter of bar

b) Greater of development length or thirty times of diameter of bar

c) Greater of two times of development length or twenty four times of diameter of bar

d) Greater of development length or twenty four times of diameter of bar

Answer:  b) Greater of development length or thirty times of diameter of bar

 

 29. If aspect ratio is 1.2 then type of slab is..........

a) One way slab

b) Two way slab

Answer:  b) Two way slab

 

 30. If mild steel is to be used for slab reinforcement, then minimum area of reinforcement will be ..........

a) 0.12 % of gross area of slab

b) 0.15 % of gross area of slab

c) 0.18% of gross area of slab

d) 0.20% of gross area of slab

Answer:  b) 0.15 % of gross area of slab


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