Multiple Choice Questions (MCQ) On Design of R.C.C. Structuresc (Part 5)

 41. When slenderness ratio is greater than 12 then type of column is..........

a) Long column

b) Short column

Answer: a) Long column

 

 42. According to IS code Minimum area of main reinforcement in column is …… of gross area of column

a) 0.8%

b) 0.6%

c) 0.5%

d) 0.7%

Answer: a) 0.8%

 

 43. According to IS code Minimum number of bars in circular column should be..........

a) 4

b) 5

c) 6

d) 9

Answer: c) 6

 

 44. According to IS code Maximum area of main reinforcement in column is …… of gross area of column

a) 8%

b) 6%

c) 9%

d) 4%

Answer: b) 6%

 

 45. According IS Code Minimum diameter of bar used for transverse reinforcement in column is.....

a) 5 mm

b) 6 mm

c) 8 mm

d) 10 mm

Answer: b) 6 mm

 

 46. The minimum number of main steel bars provided in R.C.C. column should be.....

a) Rectangular columns is 4

b) Circular columns is 6  

c) Octagonal columns is 8          

d) All the above

Answer: d) All the above

 

 47. The diameter of longitudinal bars of a column should never be less than .....

a) 6 mm

b) 8 mm

c) 10 mm

d) 12 mm

Answer: d) 12 mm

 

 48. The spacing of transverse reinforcement of column should not exceed the least of .....

a) The least lateral dimension of the column

b) Sixteen times the diameter of the smallest longitudinal reinforcing rods in the column

c) 300 mm

d) All the above

Answer: d) All the above

 

 49. Pick up the correct statement from the following

a) Lateral reinforcement in R.C.C. columns is provided to prevent the longitudinal reinforcement from buckling     

b) Lateral reinforcement prevents the shearing of concrete on diagonal plane  

c) Lateral reinforcement stops breaking away of concrete cover due to buckling        

d) All the above

Answer: d) All the above

 

 50. Permissible minimum eccentricity of column is..........

a) 5 times least lateral dimension of column

b) 5 times smaller diameter of main bar

c) 5 % of least lateral dimension of column       

d) 5 % of smaller diameter of main bar

Answer: c) 5 % of least lateral dimension of column