See Using the Network Navigator for more details. You can use predefined queries in the Network Navigator.For more information, see Sorting and Filtering FlexTable Data. The formula is as follows: Constant (0.85 for SI units, 1.32 for US units).
Filter the data in a FlexTable using a query. The Hazen-Williams Formula is frequently used in the analysis of pressure pipe systems (such as water distribution networks and sewer force mains).Create dynamic selection sets based on one or more queries.You can also use queries in the following ways: to the language of the material and minor loss engineering libraries. Predefined queries-Factory-defined queries included with WaterGEMS CONNECT that are available in all hydraulic models you create. OpenFlows WaterGEMS CONNECT Edition Update 4 (10.04.00.108) The Bentley Hydraulics.Shared queries-Queries you define that are available in all WaterGEMS CONNECT hydraulic models you create.Once the GPV head loss curve has been created, the user can place GPV elements like any other element. Because there is so much variability in the equipment that can be modeled using GPVs, there is no default library. Hydraulic Model queries-Queries you define that are available only in the WaterGEMS CONNECT hydraulic model in which you define them. The user can create a library of these curve or read them from a library.Queries can be one of the following three types: You use the Query Manager to create and store queries you use the Query Builder dialog box to construct the actual SQL expression. The final production model provides the possibility of using the model for real decision-making.A query in WaterGEMS CONNECT is a user-defined SQL expression that applies to a single element type. Phase 2 started in summer 2012, and included pressure measurement point selections, data validation and model calibration. Phase 1 was mainly about hydraulic network model build-up to the pre-calibrated state where all possible data sources were created and data are loaded into hydraulic modelling software. The model rebuild is necessary because of continuous changes in the water network (pipe renewals, new developments, demands, etc.). The goal of the project was to analyse various model building alternatives so that data reload can be easily managed by ASTV. From February 2011 to December 2012, the Tallinn Water Company, AS Tallinna Vesi (ASTV), aimed at improving the previous hydraulic model creation procedures so that the model can be operatively updated through the available geographic information system, client information system (Navision), supervisory control and data acquisition system (SCADA).
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