When Calculation is selected in the left panel, the right panel displays list of available calculation methods for pipe pressure drop and flow.
You can specify the calculation method used when calculating pipe pressure drop for straight segments. On the Pressure Drop tab, select a Calculation Method from the list. The details of the calculation method are displayed in a rich-text field. If third party calculation methods are available, they will display in the drop-list.
You can specify the calculation method used when converting from fixture units to flow. On the Flow tab, select a Calculation Method from the list. The details of the calculation method are displayed in a rich-text field. If third party calculation methods are available, they will display in the drop-list.