Table 8.6.2 Sizes of Storage Tank Drainage PipesTank Capacity (V) in Litres (l)Diameter of Drainage Pipe(mm) V ≤ 28002800 < V ≤ 5500 5500 < V ≤ 1100011000 < V ≤ 1900019000 < V ≤ 28000 28000 <V2538506375100 Table 8.6.3 Sizes of Overflow Pipes for Storage TankMaximum Discharge (Q) of Water Supply Pipe into Storage Tank(l/min)Diameter of Overflow Pipe(mm)Q ≤ 190190 < Q ≤ 570570 <