A hydraulic network was initially designed and constructed to deliver water supply services to community A, B, and C. The design guidelines were: maximum head loss gradient is 2m per kilometer, mean speed is between 0.6 to 2.5 m/s, and minimum pressure head is 5m.

Using the design size of Pipe S-A, After 30 years, the roughness coefficient of all constructed pipelines decreased by 25 grades, reduction in diameter of all pipes by 300 mm, and a new community (Community D) is connected to community C using the original pipeline form S.

1. Determine the size of additional parallel pipeline (along S-A) to accommodate additional water load and original design pressure head at A is maintained.
2. Determine the appropriate size of pipe diameter in mm for pipe S-A.
3. Determine the reduced discharge capacity in MLD of the old pipe S-A.
4. Determine the appropriate size of pipe diameter in mm for pipe B-C.
5. Determine the size of additional parallel pipeline (along B-C) to accommodate additional water load and original design pressure head at C is maintained.
6. Determine the corresponding pump power requirement in kilowatts.

100m C=100 2000m A 100MLD 80m C-100 2000m B 300MLD 60m C=100 2000m C 200MLD 40m C=100 2000m D 188MLD 100m