Creating demand categories

Step-by-step Guide

Categorizing demand in InfoWorks WS Pro allows you to easily visualize different demand profiles, which can be crucial for planning new developments. In this example, you will create a new demand category representing a school within a planned housing development.

1. Copy Session 5.wspt into your Database.
2. From the Model Group window, drag-and-drop BridgeNet into the workspace to open the GeoPlan.
3. In the Scenarios toolbar, expand the Select scenario drop-down.
4. Select the new scenario, Housing Development, which has a new node with allocated demand linked to the existing network.

To create a new demand category:

5. From the Model Group window, under Demand Diagram Group, select BridgeTown ADAW.
6. In the Demand Diagram window, click Add.

7. In the New Demand Category dialog box, in the Category Name field, enter the name “School”.
8. Under Factored / Direct section, select Direct, to use demand data from a live data source.
9. Ensure the Data Link is set to Manual.

Note: This setting allows you to enter category data in the Demand Diagram editor manually.

10. Click OK.

The Demand Diagram opens again with the Demand Category set to the newly created category, School.

To manually enter the data for the new demand category:

11. From your device’s file explorer, open the file txt.

Note: The data in this document represents a demand pattern for a 24-hour period.

12. From the document, select all data.
13. Copy the data.

14. In the InfoWorks WS Pro Demand Diagram, under Daily Values, select the top-left cell.
15. Paste the data into the cell.
16. Click Save.

To use the new demand category:

17. In the ribbon, select Scenario > Create scenario.

18. In the Create New Scenario dialog box, enter the name “Housing development + school”.
19. Select Copy an existing scenario.
20. In the Scenario to copy drop-down, ensure that Housing development is selected.
21. Click OK.

22. In the Tools toolbar, select Properties.
23. In the GeoPlan, select the node that represents the planned development.

24. From the Properties window, Demand section, in the Demand By Category field, click More (…).

25. In the Demand By Category dialog box, second row, expand the Demand Category drop-down and select School.
26. Under Category Type, select Direct.
27. In the Direct Demand Factor cell, enter “1” (so that it is not given a multiplier).
28. Click OK.

29. Commit the changes to both the BridgeNet network and the BridgeCon

To create a new run to simulate all three scenarios in the model:

30. From the Model Group window, right-click Run Group and select New > Run.

31. In the Schedule Hydraulic Run dialog box, name the run “Housing Development + School”.
32. Select Experimental.
33. From the Model Group window, drag the BridgeNet network into the Schedule Hydraulic Run dialog box and drop it in the Network section.
34. From the Scenarios tab, select all three scenarios.
35. Click Run.

36. In the warning dialog box, click Yes.
37. In the Model Group window, expand the file tree, if needed, to display the new run.

To open the three simulations for comparison:

38. From the Model Group window, Run Group, under Housing Development + School, drag-and-drop BridgeCon into the workspace to open the base scenario simulation.
39. Right-click the Housing Development simulation and select Open as.
40. In the Select Results dialog box, select As Alternate Results For Comparison.
41. Click OK.

42. Repeat steps 39-41 for the Housing Development + School scenario.

To graph the differences in pressure for the simulations:

43. In the Tools toolbar, select Graph.
44. On the GeoPlan, select the development node.
45. In the Select what to graph dialog box, select Pressure (psi).
46. Select Graph alternate results.
47. Click OK.