SWMM56

Note:    Tributary   Area  to a  Node  in  SWMM  5 or  InfoSWMM Here are the steps you neeed to take to calculate the  tributary   area  of a  node  in  InfoSWMM : Step 1:   Use the DB Editor to get the total  area  in your model using the Data Statistics Tool. Step 2:   Use the Process options in  InfoSWMM  to ONLY simulate surface runoff and flow routing. Step 3.  Copy the  Node  name and Total Inflow Volume from the Juntion Summary Output Table to Excel Step 4:   Find the  Total Wet Weather Flow  during the simulation from the Wet Weather Inflow Row in the Flow Continuity Table. Dry Weather Inflow   0.000  0.000 Wet Weather Inflow  0.782    0.255 Step 5.  Make a new column in Excel to calculate the  tributary   area . The  Tributary   Area  of a  Node  = Total Inflow Volume /  Total Wet Weather Flow  * Total Subcatchment  Area  from Step 1. You will now have the  tributary   area  for each  node .  You can verify this number = the total  tributary   area  at the outfalls should equa

Subject:  How to  Set   Up  an  InfoSWMM   2D   Simulation   Polygon  and  Mesh Step 1:  Create the  2D  Database Step 2:  Verify the Creation of the  2D  Database Step 3:  Create the background  Simulation   Polygon  for the  2D   simulation Step 4:  Create the  Mesh  on the  2D   Simulation   Polygon Step 5:  Run the combination 1D and  2D  network Step 6:  Simulating the network uses  up  to the number of cores on your computer for the  2D  flow. Step 7:   2D  plot of the flooded  mesh  points.

Subject:   Drainage   Wells  or a  Vertical   Exfiltration   Trench  in InfoSWMM Note, this is just one way to model an  Exfiltration   Trench .  The source for the image below is  Rice Creek Watershed .  You can make a storage node to simulate the  trench  with the following characteristics: ·          Functional or Shape Curve to describe the shape of the  trench , ·          Infiltration parameters to simulate the infiltration flow out of the bottom or sides of the  trench , Step 1:   Define the shape and geometrical characteristics of the Infiltration  Trench Step 2:  Define the soil infiltration characteristics of the  trench Step 3:   Run the simulation.  The Storage Volume Summary tells you the volume infiltrated and the average outflow. Step 4:   Output Manager will also show the infiltration  outflow, the depth and the volume of the infiltration/storage node. Step 4:     Infiltration losses out the side and bottom of the orifice.

Subject:   How to make  Multiple   Storm   Events  in  InfoSWMM  and How to  Use   them  in the  Scenario   Manager Step 1.   Make a new Time Series to hold the data points for your new Rainfall Time Series in the Operation Tab of the Attribute Browser.   Step 2.   Populate the Rainfall Distribution with a SCS Type II Hyetograph with a 1 inch rainfall total   Step 3.   Now Clone the created Rainfall Distribution and make 10, 25, 50 and 100 year  storm   events  each with 1 inches of rainfall in a cumulative distribution.   Step 4 .  Now  use  the  Block Edit  command and convert each of the newly created hyetographs to 4, 7, 10, 15 and 20 inch cumulative rainfall totals from the original 1 inch rainfall total (for example). Step 5 .  Now create a Raingage for each of the newly created hyetograph time series using the DB Editor under the Raingage Table in Hydrologic Data Step 6 .  Link the Time Series to the new Raingages and define the type (cumulative), units (inches) and hyetograph i

Weirs in InfoSWMM  and SWMM5 Subject:  Weirs in InfoSWMM  Figure 1 shows the relationship between the weir input data and the upstream and  downstream nodes. ·          Height, ·            Crest and ·         Node Invert Elevation  There are four types of weirs and if the weir becomes submerged downstream the Villemonte weir submergence correction is applied (Figure 2).  You can have flow reversal across the weir unless you use a Flap Gate for the weir (Figure 3).  Figure 1:   Definition of Weir Terms Figure 2:  Villemonte Weir Submergence Correction Figure 3:   Flow Reversal in a Weir

Note:   A  Basic   InfoSewer   Wet   Well ,   Pump  and   Force   Main   System

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