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  1. Select the Snap option in the Plan ribbon. This precisely attaches paths to drawings depicted from the CAD data.


  2. Go to the Build ribbon and select Add Network. Select the Default MH template we have just created from the drop down.


  3. Start by left-clicking near the house and continue to connect the manholes downstream, as seen in the following image. Continue to click on each manhole position upstream as seen in the following image. Finish the path by pressing the Esc key.


  4. The default font size makes the view difficult to distinguish so it is useful to change the labels to make it easier to read. Right-click on the Plan and open the Display Settings form to change this. Select the Plan tab and enter 4 m as the Text Height then close the form.
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  5. Click the Connections button in the Build ribbon, or double-click on Connections in the Tree View, and rename “Pipe(x)” to “Px" as shown below. Click OK.



  6. To rename the manholes, select the Tables button from the Build ribbon. Select the Junctions tab in the Tables dialog and turn on all the tick boxes. Enter the new names below  Click OK to apply the changes.



  7. Plan colours can be changed for better visibility. Right-click on the Plan view and select Display Settings. It is also possible to lock layers when you are happy with their location.


  8. Next, we will add the other part of the branch line. Using the Add Network button on the Build ribbon, add in a branch line from the top right downwards adding on to MH8. Click the Inlet icon at the bottom of the popup. This will connect the new branch line to the existing inlet rather than creating a new inlet. 

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  1. Our catchment areas can be defined. We could click Build > Add Inflow > Catchment Area and trace them using the Snap tool as before. However, these Area areas are already part of the CAD drawing as polygons so for speed we will load this layer.

  2. You may have already noticed that many import options are duplicated on the Import Ribbon and the right-click menus in the Tree View. Right-click on the CAD Data layer and select Import Inflows.


  3. Locate the same CAD file as previously and then click Next.
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  4. Click Deselect All then turn on the Areas layer and click Next again.
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  5. You can leave the default Catchment Area template selected and click Finish.
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  6. The areas will automatically be assigned to the upstream of each branch. To move the icon, Click with the left mouse button and hold down the Shift key on the keyboard to drag it separately to the area Outline. The Catchment Areas can be renamed if needed. 

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It is useful to see how the network will sit in conjunction to the landscape around it. Right-click on the Train Flow Path that was automatically created and select Show Profile.


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This allows us to navigate a Flow Path and see where the pipe and manhole locations are. It is quite clear that the design is not optimised as there are some pipes that will be flowing upstream. We can use the Network Design Wizard to size pipes and design the network to our default specifications.

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