#INFOSEWER

How to Setup RDII in InfoSewer Pro (Storms)

How to Setup RDII in InfoSewer Pro (Storms)

Using RDII or RTK or I&I Hydrographs in #INFOSEWER – InfoSewer from Innovyze also has the features to model Infiltration/Inflow from Rainfall Events into a Sanitary or Combined Sewershed. There are three parameters, R, T and K, a Sewershed Area and a fraction division that divides up the overall R to the three individual R’s

1UH has an overall R (percent of Rainfall that turns into Rainfall Dependent Infiltration Inflow)

a. R1 = Percent R1 * R / 100

b. R2 = Percent R2 * R / 100

c. R3 = R – R1 – R2

2Figure 1 shows the Rainfall for InfoSewer

3Figure 2 shows the result of using 100 Percent R1, R2 or R3 at a node

4T is in hour and T*K is the Time Base of the resulting UH

Step 1. Define the hyetograph or rainfall as a curve

Figure 1 Rainfall for RTK in InfoSewer

Step 2. Define the UH has an overall R (percent of Rainfall that turns into Rainfall Dependent Infiltration Inflow)

a. R1 = Percent R1 * R / 100

b. R2 = Percent R2 * R / 100

c. R3 = R – R1 – R2

Figure 2 Define the RTK values. Note R3 is calculated

Figure 3 Define the Rainfall and UH for Each Node

Figure 4 Setup the Storm Tab in the Run Manager

Figure 5 Check to See if there is Storm Flow in the Mass Balance Table

Figure 6 Does the Storm Flow look Reasonable in the Graph

Figure 7 Resultant UH for Nodes with only R1, R2 or R3.

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