The display of these lines can be controlled in Element Symbology > Customer meter > Show attached Line Decorations set to either True of False.ĭuring a simulation, the appropriate pattern and global multipliers are applied to the demand entered or calculated using unit demands and this value is passed on to the associated node to be used in the hydraulic simulation. Once the customer meter elements have been assigned to hydraulic model elements, these assignments can be viewed as lines connecting the elements. This enables the user to use a selection set which can ignore large transmission mains with no customers. If the customers are being assigned based on nearest pipe method, in addition to specifying the Model Node Layer and Customer Data, the user must also specify the Model Pipe Data which identifies which pipes are to be considered. The "Customer Data" is usually Customer\All Elements although it can be any selection set of Customer Meter elements. In using LoadBuilder, the "Model Node Layer" will usually be Junction\All Elements but it can be any selection set of node elements that have Demand (Base) as a property.
Using LoadBuilder to assign customer meter elements to hydraulic model elements using one of LoadBuilder's allocation methods under Customer load data such as nearest node or nearest pipe (see LoadBuilder help). Using ModelBuilder if the assignment of the customer meter element to a model element is available in the data source. Picking the property "Associated Element" in the property grid or flex table for the customer meter element, then choosing "Select Associated Element" from the drop down and picking the hydraulic element to associate with the customer meter element. The demands from the customer meter element must be assigned to a hydraulic modeling element in order to be used in hydraulic calculations. The Property Grid for a Customer Meter element is shown below: The Demand Control Center is not used for Customer Meter elements because there can only be a single demand and unit demand for a customer meter. The demand data can consist of demand, unit demand, pattern (demand), pattern (unit demand), and demand distribution percentage for the start node (only for associated pipe). Manually by entering values in the element property grid, the customer meter element flex table or Demand Alternative under the Customer Meter tab. This could be done while the elements are being created or as a separate import.Įntering Demands for Customer Meter Elementsĭemand data for customer meters can be entered: Entering values in the element property grid, the customer meter element flex table or Physical Alternative under the Customer Meter tab. The association of the element with a node or pipe is shown as a dashed line.Įntering Elevations for Customer Meter Elements The customer meter element symbol is shown below. The data source should contain a label, the x-y coordinate and some demand data for the new element. Importing the customer element from an external data source using ModelBuilder (see ModelBuilder help). Note that in this case also the associated element needs to set to the connected node or pipe. When the customer meter is connected to a pipe with the lateral, a tap node is placed at the connection point of the pipe. Selecting the lateral icon from the layout ribbon, placing the customer meter in the correct position in the drawing and connecting the customer meter with the lateral to either a pipe or a node. Selecting the customer meter icon from the layout ribbon and placing the customer meter in the correct position in the drawing. Assigning customer metering element to hydraulic model elementĬustomer meter elements are not directly used in hydraulic calculations but are used to load demands to elements that are used in hydraulic calculations.Ĭustomer meter elements can be created by:. There are several main steps in using customer meter elements. Customer meter elements provide a way for users to maintain customer water demand data within WaterGEMS/CAD which provides the user access to features such as element symbology and the ability to visualize customer location and assignment of demand to node or pipe elements.
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