Have you ever wanted to add sanitary loads to a sewer model based on individual property data? Perhaps you have loading data provided for customers, or properties, based on metering, number of occupants or fixture units. The new Property Connection node element was introduced in the CONNECT Edition of the storm and sewer products (SewerGEMS, SewerCAD, SewerCAD, StormCAD). This new element allows you to input loading data as fixed loads, units loads, and pattern loads. The elements and their corresponding loads can be quickly imported with the ModelBuilder tool. Once the Property connections are imported, the LoadBuilder tool can be used to assign the property connections to the nearest element by creating taps and laterals. To learn more, watch this short video and check out the additional sources in the "See Also" section below. This video covers the following: Importing Property Connection elements and loading data with ModelBuilder. Assign property connection elements to the nearest element by creating taps and laterals. Applicable products/versions: SewerGEMS, SewerCAD, StormCAD, and CivilStorm CONNECT Edition (10.00.00.40) or later. (Please visit the site to view this video) This video is part of a growing library of useful information designed to provide effective tips and information about time-saving product features within Bentley’s Hydraulics and Hydrology products. Be sure to check back frequently to view the latest video. Better yet, subscribe to this blog by turning Notifications On. Craig Calvin Technical Support Engineer Bentley Systems, Inc. See Also Property Connections Using LoadBuilder to assign Property Connections to the nearest element and create taps and laterals Building A Model Using ModelBuilder [TN] Troubleshooting and Understanding LoadBuilder What's new in SewerGEMS CONNECT Edition What's new in CivilStorm CONNECT Edition What's new in StormCAD CONNECT Edition What's new in SewerCAD CONNECT Edition Help topic "Property Connections"
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Blog Post: Introducing individual Property Connections to your model
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Forum Post: RE: PDD and demand driven analysis difference
Thanks for uploading the file. I or someone else will get back to you after we have taken a look. Regards, Wayne Hartell
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Forum Post: Hammer Errors when using Extended CAV
Hello, I am getting this error: "There is a data error affecting a diameter change or air valve. Change flow(s) in adjacent pipe(s) to preclude initial pocket formation." and/or other generic errors when I use the Extended CAV option for one of my scenarios. Shutdown under "normal" conditions works out just fine under extended CAV, but the client wanted to model an emergency shutdown under max flow with the tank at the end of the line empty. If I run with concentrated CAV method, there are no errors and no surging. However, the one time I got through the simulation without errors, there were extreme surges and air pockets in the millions of gallons. The client requested running extended CAV, however, it is not working for me. I can upload my model so that it can be checked out, but I will need a proper explanation as to why the extended CAV option causes such errors and extreme surges. thanks
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Forum Post: RE: Hammer Errors when using Extended CAV
Hello Kathryn, This may happen in some cases where extreme results are reached, such as very large air or vapor pocket formation. Check the surge tank configuration for errors. If using the surge tank with a turbine, or in other cases where it should operate at "line" pressure, consider choosing setting the property field "Treat as junction?" to "True" to allow the initial equilibrium HGL to be computed for the tank. The above information was taken from the following article: http://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/20163.there-is-a-data-error-affecting-a-diameter-change-or-air-valve-change-flow-s-in-adjacent-pipe-s-to-preclude-initial-pocket-formation-when-computing-a-hammer-simulation-with-a-surge-tank-solution-500000080431 If that doesn't help then please provide your model files (.wtg, and .SQLite). There are two options for sharing your model on Communities, whichever you choose please be sure to zip your files first. The first option is to attach the zip file containing your model to your reply on the forum using the Advanced Reply Editor (you'll find the link below and to the right of the reply box). If your data is confidential please use the instructions in the link below to send it via Bentley Sharefile. Files uploaded to Sharefile can only be viewed by Bentley employees. Please be sure to reply on this thread with the name of the file after it has been uploaded. http://communities.bentley.com/help/w/be_communities_help/7079.be-communities-secure-file-upload
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Wiki Page: How do pumps work in the hydraulics and hydrology products?
Applies To Product(s): Bentley WaterGEMS, Bentley SewerGEMS, Bentley CivilStorm, Bentley SewerCAD, Bentley StormCAD, Bentley HAMMER, Bentley WaterCAD Version(s): 08.11.XX.XX Environment: N/A Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How do pumps work in the hydraulics and hydrology products? Solution WaterCAD/WaterGEMS/SewerCAD Pressure solver Pumps add enough head and the corresponding flow rate, which is defined on your pump definition curve, to overcome the losses and elevation differences between your upstream and downstream boundary conditions. Boundary conditions are tanks, pumps, reservoirs, and valves in the Water products and manholes, catch basins, outfalls, and wet wells, headwalls/endwalls in the SewerCAD. The pump operating point is where the pump curve intersects the system head curve. For more details on this please refer to this wiki . In the case of a closed system with only downstream fixed demands in WaterCAD and WaterGEMS, the operating point will be based on the demands. Essentially, it operates at the point where the pump characteristic curve intersects with the system head curve. You can read more about this in the book Advanced Water Distribution Modeling and Management Implicit SewerGEMS solver In SewerGEMS with the Implicit numerical solver, the downstream boundary is considered to be the crown of the pressure pipe where it meets the receiving gravity node, or any intermediate high point. GVF - Rational StormCAD solver When using StormCAD or the GVF-Rational solver pumps are now supported as ideal flow pumps as of Select Series 3 [08.11.03.77]), meaning that flow in will equal flow out and the pump curve is not used in the calculations. This solver does not support parallel pumping or pump controls. GVF - Convex SewerCAD solver When using the GVF Convex solver pumps will work the same as the pressure solver for pressure situations and will work the same as the implicit solver for gravity situations. When running a steady state the solver doesn't support pump controls. See Also A pump exceeds the maximum operating point user notification System Head Curves in WaterGEMS and WaterCAD
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Wiki Page: SewerGEMS TechNotes and FAQs
Key: CS – Client Server Article FAQ – Frequently Asked Questions TB – Technical Bulletin TN – TechNote VID – SELECTsupport Video The following TechNotes and FAQs are provided as a reference by Bentley's Technical Support Group. Calculations SewerCAD (GVF Convex Solver) vs. SewerGEMS/CivilStorm (Implicit and Explicit Dynamic solvers) vs. StormCAD (GVF Rational Solver)? Validation or Certification documents for Hydraulics and Hydrology products Conversion How to export a selection set to shapefiles How to export model elements to shapefiles Submodel Importing and Exporting FlexTables Customizing FlexTables for viewing and reporting data -- Moving, adding, and removing columns How to filter a FlexTable by Query, Selection Set, or by selecting from drawing pane for reporting, global edits, etc. New Flextable features in 08.11.06.58+ (Water products) and 08.11.05.113+ (Storm/Sewer products) General Can I restore a backup file of my model project? Can StormCAD use the HDS-5 calculations that CulvertMaster uses to compute culvert hydraulics? Creating User-Defined Profile Settings Property grid, Element FlexTable, or other dialog will not open Running a Long Term Continuous Simulation Transferring Custom Inlets Catalogs,Storm Data, Conduit Catalogs, or Flow-Headloss Curves from One Computer to Another Understanding the Modified Rational Method Why do I keep getting prompted to compact the database when I open my model? What does this mean? Help and Documentation Hydraulics and Hydrology Video Series Tips for finding answers to Haestad product questions Input Active Topology Management Are minor losses from pipe bends automatically considered? Building A Model Using ModelBuilder [TN] Element label editing and automatic numbering How can I export my GIS-ID's to a shapefile? Importing a CAD Drawing Using Modelbuilder Inserting or laying out pipe bends Modifying and adding entries to Engineering Libraries My controls aren't being followed. What's going on? Pump Station and Pump Combination Curves Scenario and Alternative Management Setting Boolean (True/False) Fields using Model Builder Should I use the inside diameter or outside diameter for the "diameter" field for my pipes? Troubleshooting and Understanding Loadbuilder Updating A Model Using Model Builder Updating Source File Using Model Builder What is the asterisk column in the Alternative Editor Dialog Box used for? What is the difference between a Simple Control and a Logical Control? What is the difference between simple and logical controls? When importing a submodel, why do my new elements turn inactive and old elements change their attributes to the defaults in the new scenarios? Why are there 2 entries for the same alternative in the dropdown menu in the properties of a scenario? One with an "i" and one without it. Changing symbol size, text height, or line width for elements in a model Installation Cumulative patch set frequently asked questions Downloading Haestad / Hydraulics and Hydrology Software Generating a log file for installation problem troubleshooting How can I find out when a new version or patch is available? Performing a silent installation for Bentley's Water and Storm/Sewer products What is an i-model and why does it show as a prerequisite? How do I publish an i-model? What is the installation order for the WaterCAD, WaterGEMS, SewerCAD, SewerGEMS, CivilStorm, StormCAD, CulvertMaster, FlowMaster, or PondPack files? General SewerGEMS For ArcGIS FAQ ProjectWise Integration Licensing Hydraulics and Hydrology Product Licensing (Activation) FAQs and Troubleshooting [TN] Modeling Modeling Force Mains with Air Valves in SewerCAD (GVF Convex Solver) [TN] Headwalls Output and Reporting Changing drawing style for better viewing of element symbols and annotations Changing the default property values when creating model How can I find the total volume of water through a certain element? How can I remove or display pipe flow arrows? How do you add color coding or annotation to an element? Troubleshooting negative pressures at pumps, junctions, & other node elements Using Fit To Page Printing In The Standalone Platform [TN] When importing a DXF as a background, it does not show up in the model, even when pressing zoom extents. Why aren't known flows adding up? Why do I see residual mouse trails (visual artifacts) left behind when moving things in the drawing pane? Why do I sometimes see a negative flow through a pipe? Tools Creating formula-based User Data Extensions Loadbuilder - Flow Monitoring Distribution Using The Network Navigator [TN] Waterobjects.NET Troubleshooting Troubleshooting unstable model results using the Explicit SWMM Solver Troubleshooting unstable model results using the implicit solver Why do hand calculations for Rational Method flow in U.S. Customary units differ from the values presented in the software? Why does flow or velocity sometimes decrease when moving downstream? Why does the hydraulic grade line at my outfall start at higher elevation than the user defined tailwater I entered? Why does the profile for the system appear to be at odds with the results for the capacity? (For example, the profile does not show a conduit as being full, but the capacity results indicate that it is.) Why is it that no matter how large the inlet on grade is the gutter spread always remains the same? Why is the HGL reset to rim elevation for flooded structures? Why do I see zero overflow for a manhole during a timestep when the HGL is above the rim? Version Compatibility Can a model be saved down or back to an older version? How can I find my registration / license information and version / build number for my Hydraulics and Hydrology products? How can I find out what version a model was created in? Platform Compatibility What’s New What's new in SewerGEMS V8i SELECTseries 2? What's new in SewerGEMS V8i SELECTseries 3? What's New in SewerGEMS V8i SELECTSeries 4 What's New in SewerGEMS V8i SELECTseries 5? What’s new in StormCAD, SewerCAD, SewerGEMS and CivilStorm V8i SELECTseries 5 with CONNECT Integration? What's new in SewerGEMS CONNECT Edition See Also Product TechNotes and FAQs External Links Haestad Methods Water Solutions on Bentley Website Advanced Water Distribution Modeling and Management online textbook Support page on Bentley website
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Wiki Page: User notification: "Transition from CONCENTRATED to EXTENDED"
Applies To Product(s): Bentley HAMMER Version(s): 08.11.xx.xx Environment: N\A Area: Output and Reporting Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem In HAMMER, what does this user notification mean? "Transition from CONCENTRATED to EXTENDED" or "Transition from EXTENDED TO CONCENTRATED" Solution This is related to the Extended CAV option for air valves. When using the "Extended CAV" calculation option, the program will automatically switch between the regular (concentrated/elastic) and Extended (rigid) based on the percentage of the adjacent pipe volume that the air pocket occupies. This is mainly because the Extended mode is more suited for sufficiently large volume of air entering and the flow regime evolves from hydraulic transients to mass oscillations. You will see notifications indicating when this occurs. You can see the specific timestep under Reports > Transient Analysis Reports > Transient analysis output log. See Also User Notification "Concentrated CAV model must be used..." Modeling Reference - Air Valves [TN] Does the Extended CAV option apply to vapor pockets in the system or only air?
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Wiki Page: Using LoadBuilder to assign Property Connections to the nearest element while creating taps and/or laterals
Product(s): SewerGEMS Version(s): 10.00.00.40 and later Environment: N\A Area: Modeling Introduction LoadBuilder can be used to assign isolated Property Connection elements to the nearest element by creating a tap and lateral connection. Isolated Property Connections are those elements that are not connected to any lateral element. Laterals are automatically placed between the source element and the hydraulic network when using LoadBuilder and selecting Property Connection Load Data as the Available LoadBuilder Method. When this data source is used, it is assumed that that load data is already available in the Property Connection. Steps 1. Run the LoadBuilder tool from the Tools tab. 2. Click the New icon 3. Select Property Connection Load Data as the Available LoadBuilder Method and click Next. 4. Optional: Create a selection set containing the links elements (ie. Channel or conduit) that can have taps associated with them. 5. Optional: Create a selection set containing the Property Connection elements that are to be assigned with Loadbuilder. 6. Enter all fields on the Property Connection Nearest Link page and then click Next. Link Layer In standalone, when the […] button for Link Layer is clicked, the following dialog displays to select all elements of a particular type or a selection set containing conduits and/or channels. In ArcMap, when the […] button for Link Layer is selected, the following dialog displays and allows you to select the available Feature Class layer. Link ID Field Specify the source database field that contains the identifying label data. In standalone, MicroStation and AutoCAD platforms, this field is always “ElementID”. In ArcMap, multiple choice are given based on the columns available in the selected FeatureClass Layer. Property Connection Layer In standalone, when the […] button for Property Connection Layer is clicked, the following dialog displays to select all Property Connection Elements or available selection sets of Property Connection type. In ArcMap, when the […] button for Property Connection Layer is selected, the following dialog displays and allows you to select the available Feature Class layer. Property Connection ID Field Specify the source database field that contains the identifying label data. In standalone, MicroStation and AutoCAD platforms, this field is always “ElementID”. In ArcMap, multiple choice are given based on the columns available in the selected FeatureClass Layer. If Next is pressed without entering one of these fields, then one of the following errors will display. Link layer not provided Link ID Field not provided Property Connection Layer not provided Property Connection ID Field not provided If the selected Property Connection Layer doesn't contain any isolated Property Connection elements, then the following message will display. "There are no results available for the given input parameters. Please verify your data and try again." 7. The Results Preview page contains a list of the nearest elements for each Property Connection. A lateral will be created to connect elements listed in the Property Connection column with the corresponding assigned elements in the Nearest Element column. Based on the geometric location of a Property Connection, the Nearest Element that it is assigned to could be a link (conduit/channel) or node (catch basin, manhole, transition, cross section or headwall) element type. 8. On the last page of the LoadBuilder wizard, enter a name for the LoadBuilder run and click Finish. 9. Review and close the summary dialog. Close the Load Manager. 10. Model Synchronization After a successful Property Connection nearest link run, one or more lateral and/or tap elements will be created. Therefore, a drawing needs to be synchronized to display them. Once the Summary Report and Load Manager are closed, the following dialog will display asking if you want to synchronize the drawing: If you click Yes, a drawing will be synchronized and new elements will be display. Otherwise, the drawing will remain out-of-sync. Active Topology An element's active topology state is considered when using LoadBuilder with Property Connection load data. LoadBuilder will not assign a property connection to an inactive element. A Property Connection will only be assigned to a link if both of its nodes are active. Properties of newly created Lateral and Tap elements Newly created Lateral and tap elements will have a default values from the active lateral and tap prototypes respectively. If a tap element is created, it will have a reference link (dashed line) connecting it to the nearest pipe. See the following article to remove the dashed line. The dashed line can be turned off by setting the tap property "Show Associated Link Decorations" to False. Property Connection Assignment The nearest element the Property Connection is assigned to will vary for different use cases. When is a tap node created on the nearest link element? If the Property Connection element is perpendicular to the nearest link, and the perpendicular intersection is not within 10ft of a valid node. If the Property Connection makes a perpendicular intersection with the nearest link within 10 feet of, or beyond the node, but the nearest node is invalid (eg. outfall). When is the nearest node used? If the Property Connection element is not perpendicular to the nearest link and the nearest node is valid (eg. manhole). If the Property Connection element is perpendicular to the nearest link, and the perpendicular intersection is not within 10ft of a valid node. A Property Connection element will be assigned to the nearest node if one of the following are true: The Property Connection element is close to (within 10ft) the valid node element (ie. manhole, catch basin, transition, cross section, headwall). This 10ft is a fixed distance and can’t be modified. If the Property Connection element is closer to an applicable node (ie. Manhole, catch basin, transition) then the lateral will be created from the property connection element to the node. See Also Wiki: Property Connections Blog [VID]: Introducing individual Property Connections to your model Original Author: Craig Calvin
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Wiki Page: Building A Model Using ModelBuilder [TN]
Applies To Product(s): WaterCAD, WaterGEMS, SewerGEMS, SewerCAD, StormCAD, PondPack, CivilStorm Version(s): V8i Environment: N/A Area: Modeling Original Author: Akshaya Niraula, Bentley Technical Support Group Overview A powerful tool in the Bentley Municipal product line is the ModelBuilder. Using ModelBuilder, a hydraulic model can be created, as well as updated, from multiple types of files that you already have generated (e.g. .SHP, .DXF, .XLS, .MDB, .GDB etc...). In the V8i product generation, ModelBuilder is also capable of updating the source GIS file (.SHP). The steps provided here will help you to first to create the model, then update it, and finally update the source file. These steps can be followed for all Storm-Sewer and Water line of hydraulics and hydrology (Haestad )products. The procedure example below uses a Geodatabase as the source of modeling information and WaterGEMS as the modeling software. Please note that the geodatabase option as data source type will only be available in WaterGEMS, HAMMER, and SewerGEMS for ArcMap. **Note: Helping to achieve proper network connectivity using modelbuilder starts when a shapefile or feature class is created in ArcMap. When creating the file you should make sure to turn on all your snapping options, so the elements are actually connected in ArcMap and there aren't connectivity gaps. You should also make sure that you are laying out the elements in the correct order according to WaterGEMS connectivity rules. This means that every pipe needs to have some type of node element attached at either end. Node elements include junctions, tanks, valves, reservoirs, and pumps. If possible it's also advised to create a new pipe between each node element. For example,instead of laying out all your pipes first when creating your shapefile (feature class) you would create things in the following manner: i) Create a node element ii) Create the line element representing the pipe iii) Create the end node element for the line iv) Repeat steps 1-3 until finished. Preview of Source File As mentioned previously, this example source file is a Geodatabase (.GDB). The .GDB contains four modeling elements (or hydraulic features). 1) Well 2) Tank 3) Pump 4) Pipes The modeling attributes for each of the features are shown in picture below. Build the Model Using ModelBuilder The first step, in general, is to build the model. The procedure assumes that you have created a blank model in ArcMAP and that most of the WaterGEMS menus are active. If a WaterGEMS menu is not active you'll need to start an editing session to activate that menu. You can find information on using WaterGEMS for ArcGIS in this wiki. Open ModelBuilder To open ModelBuilder choose Tools > ModelBuilder (Tools menu of Hydraulic Modeling Product) The ModelBuilder dialog, as shown below, will show up. Click on the New button (highlighted by the red box). Specify your Data Source The "Specify your Data Source" dialog will show up. First, select the Data Source type, and then ‘Browse' for the source file, as shown. You can select more than one shapefile at a time by holding down the CTRL button. In this step: Source data can be selected. Tables/ layers can be selected/ deselected SQL query can be applied to filter the table if required Source table can be previewed When the "Show Preview" box is checked, only the highlighted Table will be displayed. You can select the other tables by left clicking on them to see a preview of their information. The "WHERE" statement applies only for the selected layer (in this case, "PIPE []"). Different "WHERE" statements can be specified for different layers. The WEHERE statement are SQL type clauses that allow you to filter data from the table, which allows you to only import specific records. Below is an example: Notice the other two pipe attributes are not shown in the preview. For more information on the WHERE statement and the expected syntax, see the Help topic "Specifying a SQL WHERE clause in ModelBuilder". In this example, the "WHERE" statement will not be used. (If it were used, only two pipes would be created.) Click Next. Specify Spatial and Connectivity Options Depending on the source file, your screen may look different from the example screen capture below. Provide the unit of your Source Data under "Specify the Coordinate Unit of your data source. If you are not sure of your units, try "ft." Checking the box next to "Create nodes if none found at pipe endpoint" will create a pressure junction at any pipe endpoint that (a) doesn't have a connected node, and (b) is not within the specified tolerance of an existing node. This field is only active when the "Establish connectivity using spatial data" box is checked. (This option is not available if the connection is bringing in only point type geometric data, for example, Well or Wet-Well.) Check the box for "Establish connectivity using spatial data" and provide a value for 'Tolerance'. Pipes will be connected to the closest node within the specified tolerance. The unit associated with the tolerance is dictated by the Specify the Coordinate Unit of your data source field. Click Next. Specify Element Create/Remove/Update Options Depending on your requirements the selection of options may vary. For this example, the options are selected as shown. After you select the appropriate options, Click Next. Specify Additional Options This step is particularly important if the GIS source file has a Unique ID. In this workflow, there is a unique ID, so GIS-ID has been selected. If there is no unique ID, you can select Label, and it will work similarly. For more information on these options please search for them in the programs help menu. If you plan to use the Sync Out feature (update the source file based on model updates), then maintaining a Unique ID is highly preferred. The Help file explains each option in detail. When you have finished selecting additional options, click Next. Specify Field mappings for each Table/Feature Class In this step, data source tables are mapped to the desired modeling element types, and data source fields are mapped to the desired model input properties. The screen below shows steps for mapping Pipe element types and Diameter fields. In this case, the "LABEL" is the field that holds the Unique ID. So, the "Key Field" is set to "LABEL". If there is no unique ID, then select from the drop down, which allows the program to create its own unique label. Select the Table. Select the Table Type. Select the Key Fields. Select the source field. From the Property (of hydraulic model), select the corrosponding field (6). If needed, select the unit--"in" in this case (not shown). To map the material, see 7-9 below. Do NOT map the Unique ID field or field. Finally, the screen should look like: Similarly, the remaining tables can be mapped. The following screen shows the "Pump" mapping structure. The screen below represents the "Tanks" mapping structure. In the same way, "Wells" can be mapped. After mapping all the elements and fields, click Next. Create Model Now? Select "Yes" and click on "Finish". ModelBuilder Summary Close the Summary after reviewing. Click "Yes" in the next screen (below). Finally, the screen should look like below. Notice the existing features are turned off, and new layers of the WaterGEMS are checked. This concludes the model building process using ModelBuilder. Note: After running ModelBuilder, ModelBuilder creates an xml file which holds all the configuration information. This link will be used to update the model again; otherwise, all the fields need to be mapped again. The link that was used to build the model can be seen in the image below. See Also Updating A Model Using Model Builder Introducing individual Property Connections to your model Updating Source File Using Model Builder Setting Boolean (True/False) Fields using Model Builder Import a CAD (DXF) flle using Model Builder Product TechNotes and FAQs Haestad Methods Product Tech Notes And FAQs WaterGEMS V8 Modeling FAQ Hydraulics and Hydrology Forum External Links Bentley SELECTservices Bentley LEARN Server
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Wiki Page: Property Connections
Product(s): SewerGEMS,CivilStorm,SewerCAD,StormCAD Version(s): 10.00.00.40 and later Environment: N\A Area: Layout and Data Input Introduction Property connection elements are used to load sewer models based on data at the level of individual properties. This is useful when you have loading data provided for customers/properties based on metering, number of occupants/fixture units, or simply flow per property. Layout and Connections A Property Connection can be placed manually in a model by selecting Layout, then either Property Connection or Lateral. Property connections can be connected to a downstream gravity network using lateral links. Laterals connect to tap elements and most gravity nodes such as manholes, transitions, and catch basins. Taps can connect to channels and manholes. Property connections cannot be connected to pressure elements. Laterals can only make a single connection to a tap or other hydraulic element. There cannot be any hydraulic elements on the upstream side of a Property Connection. However, a Property Connection can be the Outflow Element for a catchment. Create Property Connection elements and assign loads Option 1: A Property Connection can be placed manually in a model by selecting Layout, then either Property Connection or Lateral. The load data for each Property Connection can then be entered in the properties grid or FlexTable. Option 2: Create Property Connection elements via ModelBuilder, with the loading data attached to the data source. Then use LoadBuilder to assign the property connection flows to the nearest element. Assigning Property Connections to the Nearest Link LoadBuilder can be used to assign isolated Property Connection elements to the nearest element by creating a tap and lateral connection. Isolated Property Connections are those elements that are not connected to any lateral element. Laterals are automatically placed between the source element and the hydraulic network when using LoadBuilder and selecting Property Connection Load Data as the Available LoadBuilder Method. When this data source is used, it is assumed that that load data is already available in the Property Connection. For steps detailing this process, see the following article: (coming soon) Calculations Elevation of the ground and the lateral invert can be placed in the attributes of the Property Connection element but are not used in the hydraulic calculations. It is not possible to construct a profile through a lateral link and up to a Property Connection. Property connections are used for sanitary loading in the Implicit, Explicit and GVF Convex solvers, but not the GVF Rational solver. Property connections support hydrograph, pattern, and unit loads. They can also directly accept runoff as the outlet of a catchment. For the GVF Rational Solver, flow through a Property Connection must come from a Catchment. (Property Connection designated as the Outflow Element.) Query The query "Property Connections not connected to Nearest Link" is included in the Network Review Predefined Queries (version 10.00.00.40 and later). See Also Using LoadBuilder to assign Property Connections to the nearest element and create taps and laterals Introducing individual Property Connections to your model [VID] Help Article "Property Connections" Original Author: Craig Calvin
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Wiki Page: Troubleshooting and Understanding Loadbuilder
Product(s): WaterGEMS, WaterCAD, SewerGEMS ,SewerCAD Version(s): 08.11.XX.XX and later Environment: N\A Area: Modeling Loadbuilder Technote [TN] Below you will find a list of wiki articles for Loadbuilder in one place. You can either scan this page for your error or use the CTRL + F function to open the "Find" tool in your browser to search the page based on a keyword. General Information How do each of the Loadbuilder methods work? Distributing a lump sum demand over a large area Distributing loads based on areas of different population type How do you consider only a selection set of elements with Loadbuilder? LoadBuilder applying demands or loads to inactive elements Flow monitoring distribution with Loadbuilder How does the unit line LoadBuilder method work? Applying demands to inactive elements Selecting junctions or hydrant as the nearest node in Loadbuilder methods for assigning customer elements Viewing a demand or load allocation after a Loadbuilder run Using Unit Loads and Extreme Flow Factors after a Loadbuilder run Modeling a District Metered Area (DMA) Introducing individual Property Connections to your model [VID] Troubleshooting Error message: "A polygon with inner or outer rings was found. Polygons with multiple rings are not supported by this version of LoadBuilder" After running Loadbuilder I get a message that says, "The layer could not be opened." LoadBuilder Error: A very high number of Usage Types were found Index was outside the bounds of the array error in the Thiessen polygon tool or Loadbuilder Unable to use multipoint shapefile as a background or in Loadbuilder Program crashes when using Loadbuilder in the 64 bit version Not seeing new demands or customer meter assignment after running Loadbuilder Loadbuilder brings in loads of zero There are not results available for the given input parameters Correct service area layer node ID field is not showing in the dropdown Loadbuilder methods using a service area layer produce an error "# Id(s) don not match any id of the model..." (Where "#" equals some number) The total consumption allocated to nodes from Loadbuilder is less than the total flow in the flow boundary polygon layer Original Author: Mark Pachlhofer
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Wiki Page: How do I perform a clean uninstall and reinstall of the Hydraulic and Hydrology products?
Applies To Product(s): Bentley WaterGEMS, Bentley SewerGEMS, Bentley CivilStorm, Bentley StormCAD, Bentley PondPack, Bentley SewerCAD, Bentley HAMMER, Bentley WaterCAD Version(s): 08.11.XX.XX Environment: Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group How To How do I perform a clean uninstall and reinstall of the Hydraulics and Hydrology products? Solution - Windows 7+ These steps assume you're using Windows 7, 8 or 10. 1) Uninstall the application using the Windows uninstall procedure from the control panel > Programs and Features 2) After it's done browse to and delete the following folders, if they still exist. Note : " " is your Windows user account (typically firstname lastname) " " is the name of the program of interest. C:\Users\ \AppData\Local\Bentley\ C:\Users\ \AppData\Roaming\Bentley\ C:\Program Files (x86)\Bentley\ C:\ProgramData\Bentley\ C:\Users\ \Documents\Bentley\ Note: Please make sure there are no model files that are needed in this location 3) Download a new copy of the installer file using these directions . This will help assure that the copy of the installer package you have is not bad. If that doesn't resolve the issue or you are having Licensing Issue with the software please try the instructions below under "Licensing Cleanup". Solution - Windows XP or 2000 These steps assume you are using Windows XP or Windows 2000 1) Uninstall the application using the Windows uninstall procedure from the control panel > Add/Remove programs 2) After it's done browse to and delete the following folders, if they still exist. Note : " " is your Windows user account (typically firstname lastname) " " is the name of the program of interest. C:Documents and Settings\ \Local Settings\Application Data\Bentley\ C:\Documents and Settings\ \Application Data\Bentley\ C:\Documents and Settings\All Users\Application Data\Bentley\ C:\Program Files\Bentley\ C:\Users\ \Documents\Bentley\ Note: Please make sure there are no model files that are needed in this location 3) Download a new copy of the installer file using these directions . This will help assure that the copy of the installer package you have is not bad. Licensing Cleanup If the above doesn't resolve the issue or you are having Licensing Issue with the software please try the instructions below. Please note that any changes made to the registry are permanent, so it's advisable that you speak to your IT professional when trying the steps below or make sure to back up your registry before hand. Also, be sure that you have your activation key handy, or copy it somewhere, from the License Management Tool > Tools > Options. 4) Open the registry by going to your start button and typing in "regedit" without the quotation marks into the search bar and then hit enter. You will need to have administrative permissions to write to the registry. 5) Browse to and delete the following registry locations if they exist: HKEY_CURRENT_USER\Software\Bentley\Municipal Products Group HKEY_CURRENT_USER\Software\Bentley\Licensing HKEY_LOCAL_MACHINE\SOFTWARE\Bentley\Municipal Products Group HKEY_LOCAL_MACHINE\SOFTWARE\Bentley\Licensing HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Bentley\Municipal Products Group HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Bentley\Licensing 6) Close the registry, re-enter the license information in the License Management Tool and Municipal License Administrator, then try to open the software. See Also Hydraulics and Hydrology Product Licensing (Activation) FAQs and Troubleshooting [TN]
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Forum Post: RE: Hammer Errors when using Extended CAV
I have uploaded my model to the server. The scenario in question is scenario 03A. Again, runs fine in concentrated CAV, but frequent general errors in extended CAV.
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Forum Post: Problem using LicensingFacade.dll WO.NET
Hello, I am currently working in the same project described in this two threads that my teacher did when she was working in her masters degree thesis and wasn't able to finish it for time reasons: http://communities.bentley.com/products/hydraulics___hydrology/f/5925/t/100796#pi20068filter=all&pi20068scroll=false http://communities.bentley.com/products/hydraulics___hydrology/f/5925/t/100798 Basically what the program tries to do is to run an optimization model and then analyze the results in HAMMER. Right now I'm experiencing an issue with the LicensingFacade.dll, but everytime I use it this error appears "The Specified module could not be found (Exception from 0x8007007E)". I tried doing what the note in the WO.NET programming guide says: "Note: standard procedure if you receive errors or warnings, or are unable to obtain a license for unknown reasons, is to first run the License Management Tool. Use Tools-Options to double-check the SELECT Server Settings. Then use Tools-Send Logs Now." But the problem still persist. I am using the Student license that my university provides me, so I can't access the Bentley Developer Network community where I have read this kind of threads are handled. Also, can it be an issue that I'm working with the same WaterObjects.NET that my teacher used 2 years ago? If so, what can I do to get a newer version? I'll be gratefull with any kind of help, It's been weeks since I'm stuck with this problem. Juan Sebastian.
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Forum Post: RE: Hammer Errors when using Extended CAV
Thanks for sending the files. Is your client aware of the limitations of the Extended CAV feature as documented in the below article? Assumptions and limitations of tracking air or vapor pockets in HAMMER When using the Extended CAV option, HAMMER can track the air-liquid interface at air valves, but only to the extent of the two adjacent pipes. In your model, each air valve has a short, one foot pipe on each side. I'm guessing that this was done in order to satisfy the requirement whereby the air valve must be at a higher elevation then the two adjacent nodes, in order to use the Extended CAV option. The junctions on the other side of the one-foot pipes next to each air valve are at a slightly lower elevation. Based on my investigation into your model, I believe that the instability is introduced because of this - when air is first admitted into the air valve, the air-liquid interface very quickly reaches the end of the adjacent one-foot pipes and stops, initiating a transition between extended to concentrated. This likely happens at a number of your many air valves, all within a short period of time, causing instability. The instability eventually reaches the point where the calculations fail. If you observe the timestep at which the error occurs, you can adjust the simulation duration to be slightly less, then run again. You'll then be able to observe these chaotic conditions start to form just before the model run "crashes". As a test, I started adjusting the pipes on either side, keeping the total pipeline length the same, by moving the junctions on either side of the air valve further away from it. This results in longer pipes on either side of the air valve, to allow the Extended CAV option to "work" for a longer period, while still satisfying the requirement mentioned above about the elevations and also while keeping the total pipeline length the same. As an illustration, this: Becomes this: As I started doing this, the model was able to progress further and further before the crash occurred. Eventually it was able to compute the entire 200 seconds without error. Though, an animation of the profile in the Transient Results Viewer showed me that things were still quite unstable near the other air valves that I hadn't gotten to yet (just not bad enough to "crash" the model). I then tried a rough approach, changing all the pipes adjacent to the air valves to scaled length, the manually dragging the junctions away, lengthening the pipes further. Once I completed this with all air valves, the results were much better, but there was still instability. Transitions between Extended and Concentrated approaches still seemed to occur rapidly in places, likely unavoidable with the nature of the extended CAV approach and with this many air valves. Based on user notifications about the adjacent pipe being drained, I lengthened some of the "hills" further and seemed to get even "better" results. I'll send you a separate private message with a copy of my example model - illustrative purposes only. Based on my observations, I would suggest passing along the information about the limitations of the Extended CAV option to the client and explore specifics on why they want to use it. If it must be used, consider if it needs to be on all air valves, and lengthen the "hill" if possible (per illustrations above).
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Forum Post: RE: PDD and demand driven analysis difference
Hello Shahram, In the scenario where PDD is applied, the base demands are reduced per your PDD function. As an example, J-644 has a base demand of 69 L/s. In the PDD scenario, the calculated pressure is 38.3 m, which is below the Reference Pressure of 60 m which you have set in the PDD alternative. So, the calculated demand is less: 55.2 L/s. With the reduced total demand, the total flow from all the pumps will be less, so they'll be able to operate at lower speeds to maintain the same traget HGL when compared to the fixed demand scenario. Eight pumps are able to achieve the target HGL within the maximum relative speed factor. With the higher demand in the fixed demand scenario, two more pumps need to turn on to maintain the same target HGL while staying within the maximum relative speed factor. When using variable speed pumps in parallel, the program will automatically calculate how many "lag" pumps need to turn on in order to meet the target. You can read more about this in the Help topics regarding Variable Speed Pumps and APEX. As an example, if you increase the reference pressure from 60 to 80 m, the total demand will be even less and only seven pumps will be needed to achieve the same target HGL. Note: I see that you're using an older version of WaterCAD/WaterGEMS - in the latest release, you may need to adjust the piping around your pump station per the bottom part of this article You may also want to read this article for information on how the variable speed pump battery element can be used to replace all the individual pumps.
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Forum Post: RE: PDD and demand driven analysis difference
I would like to thank you for posting your answer to my question. I need some further information that would answer my question in full Would you mind defining for me why the calculated demand is different from the base demand? (for instance 55.2 and 69 L/s in j-644 )
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Forum Post: RE: Problem using LicensingFacade.dll WO.NET
Juan Sebastian, Copy the "Bentley.liclib.dll" file from the installation folder into the output folder of your sample. If you're building on the x86 platform copy the file from the root of the install folder (i.e. %ProgramFiles%\Bentley\WaterGEMS), but if you're building on the 64 bit platform copy it from the x64 folder (i.e. %ProgramFiles%\Bentley\WaterGEMS\x64). *Note that some systems will take you to “C:\Program Files” with the “%ProgramFIles%” variable. The hydraulics and hydrology products are installed to “C:\Program Files (x86)”, however, which is where the Bentley\WaterGEMS folder would be located. Regards, Mark
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Forum Post: RE: PDD and demand driven analysis difference
Shahram, When using PDD, demand will vary with pressure, based on the PDD function that you have set up. Lower pressure = lower demand, higher pressure = higher demand. So in the example case, since the calculated pressure is lower than the reference pressure, the demand is lower than the base demand (following the PDD function you entered). You can read more about how PDD works in the related Help topics and in this article: communities.bentley.com/.../2671.setting-up-pressure-dependent-demand-tn
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Wiki Page: "There is a data error affecting a diameter change or air valve." or "Invalid data" when computing transient simulation
Applies To Product(s): Bentley HAMMER Version(s): 08.11.xx.xx Environment: N\A Area: Modeling Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem When computing a transient simulation, the following error appears: "There is a data error affecting a diameter change or air valve. Change flow(s) in adjacent pipe(s) to preclude initial pocket formation." or: "Invalid Data reached" Solution This may happen in some cases where extreme results are reached, such as very large air or vapor pocket formation, or extremely unstable conditions. If using a surge tank, check the surge tank configuration for errors. If using the surge tank with a turbine, or in other cases where it should operate at "line" pressure, consider choosing setting the property field "Treat as junction?" to "True" to allow the initial equilibrium HGL to be computed for the tank. If the notification refers to a pipe near an air valve, check the air valve parameters and adjacent pipes. If you have the "Extended CAV" transient calculation option set to "true", be sure to understand the limitations explained here: Assumptions and limitations of tracking air or vapor pockets in HAMMER In this case, if the pipes adjacent to the air valve are very short, instability can occur when the pipe is drained, which will trigger a transition in the air valve calculation method. Consider if the Extended CAV option is required (given the assumptions and limitations) or adjust the model such that the pipes adjacent to the air valve are longer.
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