A unit loading consists of a unit (person, building, area) multiplied by a unit load (gal/capita/day, litres/sq m/day, cfs/acre). The units are assigned to individual nodes elements (manholes, pressure junctions) while the unit loads are created using the Unit Sanitary (Dry Weather) Loads dialog box.

Unit loads are calculated as: Load (flow Units) = Unit load (flow/number) x number of Loading units. For example: 100 gallons/capita/day x 40 people = 4000 gallons per day.

If the unit loads are not assigned to nodes but to polygons in a GIS, then it is best to use LoadBuilder to import the loads. For more information, see LoadBuilderLoadBuilder.

For more information, see "Adding Unit Sanitary (Dry Weather) Loads" and "Types of Unit Sanitary (Dry Weather) Loads" .

Unit loads correspond to a baseline load and time of day patterns can be assigned to scenarios. For more information, see "Defining Pattern Setups" .

Default unit load information is not stored with the model but with a library that can be shared between models. Default values are provided in the library called "HMI Unit Sanitary (Dry Weather) Loads.xml"