Running a Hydrant Curve Analysis

Step-by-step:

A fire hydrant rating curve shows the relationship between residual pressure and the available flow for any hydrant. Hydrant curves are often required by fire departments responsible for ensuring that a specific hydrant can adequately control a potential fire demand and maintain minimum pressure.

1. Open the appropriate .aprx file in ArcGIS Pro.
2. From the ribbon, InfoWater Pro tab, Project panel, click Initialize.

To set up and run a hydrant curve:

3. On the ribbon, InfoWater Pro tab, Analysis panel, click Run.
4. In the Run Manager, click the Hydrant Curve
5. To set the start time for this simulation:
   1. Click Select Time.
   2. In the Select Time popup, click and drag the slider to set the time to 10:00 hrs.
   3. Click OK.
6. In the Target Junction ID field, enter “J1198” as the identifier of the hydrant to be tested. Or, click Browse beside the field to select the junction directly from the map.
   
7. Set the Normal Hydrant Flow to the hydrant’s fireflow demand.
8. Click Run.

The Hydrant Curve graph opens automatically in the Report Manager.

9. If you are prompted to switch to the most recent output data, click Yes.
10. View the graph.

Any breaks in the curve are caused by a change in operation at the specified flow rate.

11. When you are finished reviewing the curve, close the Report Manager.