|Click to download the METRIC model files.|
Items can be added to the plan and connected individually, or drawn as a connected "Treatment Train" using the Add Train tool in the Build menu. The former approach, adding items individually, will be used here. The treatment train begins with the Inflow Area of the Developed Area which drains to a Bioretention SWC, from here the site runoff is conveyed to a Dry Pond.
Instead of manually delineating the Inflow Area as was done in Tutorial 1, the area can be created by importing a CAD or GIS file.
Right-click the Inflows layer, and select Load Areas from CAD.
Select the Inflow Area - Dev_m.dwg file from the Tutorial Files folder.
The CAD file contains only the Inflow Area extents polygon. Click OK to import the area.
Select the Urb-Res-Dev Template, and then click OK. Zoom back to the previous site view by using the Previous (Previous Extents) view ribbon option found under the Plan ribbon. The Inflow Area will have been created as shown below.
Under the Build ribbon, select the Add Stormwater Control option and then the GreenStreet Bio SWC. Move the pointer to the location on the site where the SWC is installed and use the left mouse button to draw the outline of the GreenStreet Bio (similar to the outline shown in the figure below). When you have finished drawing the polygon, use the right mouse button to end the drawing action.
Right-click the northern edge of Green Street Bio (where the under drain will exit the SWC and connect to adjacent MH) and select Add Connection, choose the Standard Pipe template. Then left-click the adjacent Manhole.
Right-click within the GreenStreet Bio boundary, on the north east side and select Add Connection. This time, select Bypass Trapezoidal Channel. When you connect this to the adjacent MH you will see inlet options for the manhole, either the existing inlet or a new inlet can be selected. As we are not restricting inflow into this MH from either connecting pipe, we can select the existing inlet. Press the Esc key to end drawing connections.
Right-click the GreenStreet Bio and change the outlet type for the Bypass Trapezoidal Channel outlet to Weir, as shown in the screenshot below.
To view the newly added Channel in Profile a second flow path will need to be drawn.
Right-click the Bypass Route and select Show Profile.
Now that the Treatment Train is laid out, you can review the Analysis Criteria and Rainfall set up by browsing to the Analysis ribbon and selecting Analysis Criteria.
Further information about the Analysis Criteria dialog and the Rainfall Manager can be found on the given Help topic Analysis Criteria.
Run the simulation by selecting Go under the Analysis tab.