cross-sectional area of longitudinal reinforcement

QUESTION : What should be the range of cross-sectional area of longitudinal reinforcement in reinforced concrete column as per IS 456:2000?

A) 0.8% to 6% of the cross-sectional area of the column
B) 1% to 4% of the cross-sectional area of the column
C) 1.5% to 8% of the cross-sectional area of the column
D) 2% to 5% of the cross-sectional area of the column

Explanation:

According to IS 456:2000, Clause 26.5.2.1, the cross-sectional area of longitudinal reinforcement in a column shall not be less than 0.8 percent and not more than 6 percent of the gross cross-sectional area of the column.

Therefore, option A is the correct option.

Option B is incorrect as the minimum limit is given as 1% instead of 0.8%.

Option C is incorrect as the maximum limit is given as 8% instead of 6%.

Option D is incorrect as both the minimum and maximum limits are wrong.

So the range should be between 0.8% to 6% of the gross cross-sectional area of the reinforced concrete column as per IS 456:2000.