SSC JE Civil Engineering 25-Sep-2019 Shift 1 Solved Paper

As we know that,
The pitch of lateral ties (d) is the 16 times the smallest diameter of longitudinal reinforcement bar to be tied;
So, (d) = 16 × 20 = 320mm.
But, it should be less than or equal to 300mm.
Hence, option (a) is correct.