RDII or Tri Triangular Unit Hydrograph in InfoSewer
Subject: RDII or Tri Triangular Unit Hydrograph in InfoSewer The RDII method in InfoSewer is similar to the RDII or RTK method in InfoSWMM with some differences. The RTK data for triangles 1, 2 and 3 are defined in the Unit Hydrograph but instead of individual R values, the overall R is set and the Percent R1, R2 and R3 are defined based on the total R. R3 is calculated internally as 100 – R1 – R2. Each loading manhole with RDII flow has a total area, a hyetograph and a Unit Hydrograph . The hyetograph has to be set at multiples of the unit hydrograph , so you can define the time or X columns with integers and then use the Block Edit command to change X to minutes by multiplying by the Unit Hydrograph ...