Tilake,

Yes, sanitary sewer models are commonly modeled in SWMM. You can best answer you own question about the format of the pumps and RDII? or I/I in by looking at the Extran.doc file for the pump input types (H1 lines) and the Runoff.doc file for the method of modeling RDII in SWMM.

The RDII method uses the F4 and H5 lines to characterize the infiltration or defect flows to a Runoff Sewershed. The flows are simulated with three unit hydrographs with nine parameters. The parameters are the r1, r2 and r3 values; the t1, t2, and t3 parameters and the k1, k2, and k3 values for the three unit hydrograph. The r values are the fraction of flow from a storm event that eventually infiltrates into the laterals, manholes or broken pipes of the sanitary network. The t values indicate the time base of the unit hydrographs and the k values the shape of the unit hydrograph.

The pumps defined on the H1 line may be pumps rated by wet well volume, depth at the wet well, dynamic head across the pump or elevation at the wet well with pump on and pump off elevations. I hope this helps you.

Best Regards,

Robert Dickinson
DickinsonRE@CDM.COM