Applies To Product(s): Bentley WaterGEMS, WaterCAD, HAMMER, StormCAD, SewerCAD, SewerGEMS Version(s): 08.11.XX.XX Environment: N/A Area: Output and Reporting Subarea: Original Author: Jesse Dringoli, Bentley Technical Support Group Problem How can I find the total volume of water in my network? Solution WaterCAD, WaterGEMS and HAMMER To see the total pipe volume in WaterCAD, WaterGEMS or HAMMER, click the Report menu and choose Pressure Pipe Inventory . This will show you the total physical volume of all pipes in the model, broken down by diameter and material. Since pipes are assumed to be pressurized, this also represents the total water volume stored in your network. Note: 1) You will need to account for tank volume separately. See the "Volume Full (Calculated)" or "Volume (Calculated)" fields in your tank(s). 2) If you need to see the total volume of water that has passed through a particular element, you should instead use the Totalizing Flow Meter, accessible from right clicking on the element, or from the Analysis menu. 3) If you need to see the total volume of water demanded during a simulation, see the below related wiki solution: StormCAD, SewerCAD, SewerGEMS and CivilStorm In our storm and sewer products, in order to find the total volume of all pipes (some may refer to this as the capacity) you'll first need to find the total volume of each pipe. You can do this by creating a formula based user data extension (UDX). If you only have circular pipes, the forumula would be Pi * (diameter * 0.5)^2. For box, it would be Rise * Span. If you have a mix, you can use the "iif" function. Once done, you can add up the volume of all pipes either by copy/pasting the column from a flextable into an Excel spreadsheet, or by adding the newly created UDX field to the flextable then right clicking on the column header and choosing statistics. The directions in the article below outline how to create a formula UDX: Creating Formula Based User Data Extensions Note: 1) You will need to account for the volume of wetwells, ponds, manholes, etc separately. See the "Volume Full (Input)" for a wetwell. Manhole volume can be calculated with a user data extension as well, based on the difference between the invert and rim and the diameter. 2) For pressure pipes, the volume can be found under Report > Conduit and Pressure Pipe Inventory > Pressure Pipe Inventory. 3) If you need to see the total volume of water that has passed through a particular element, you can use the Hydraulic Reviewer, located under the Tools menu.
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Wiki Page: How to Find Total Pipe Water Volume
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Wiki Page: What are the units used for pump inertia, as seen in the Transient Analysis Output Log? (Solution 500000072196)
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 What are the units used for pump inertia, as seen in the Transient Analysis Output Log? Solution As with other results and output in the text reports, the units are based on the coordinate units of the model. Basically if your model is in SI units, the X/Y coordinates will be in meters, in which case the units will be SI in the text reports. For the case of pump inertia, the units used for SI (meters for coordinate unit) is N-m^2 and the units used for US (feet for coordinate units) are lb-ft^2. So, HAMMER will convert the input values if they are in different units. See Also Does HAMMER account for water in the pump for inertia calculations?
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Wiki Page: How can I simulate a flywheel on a pump to reduce a transient?
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: N/A Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How can I simulate a flywheel on a pump to reduce a transient? Solution A flywheel can be simulated by increasing the inertia on the transient tab in the pump definitions manager (Components > Pump Definitions). Please make sure to keep this information in mind when considering using a flywheel for protection against a transient: a) They are usually big and heavy, so the pump station needs to be designed to accommodate them b) They require extra energy each time you start the pump. As a result of the extra energy required the pump may need a larger motor See Also Does HAMMER account for water in the pump for inertia calculations?
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Wiki Page: How can I limit my users from accidentally selecting the wrong products or features?
Applies To Product(s): Bentley WaterGEMS, Bentley SewerGEMS, Bentley CivilStorm, Bentley StormCAD, Bentley PondPack, Bentley HAMMER, Bentley WaterCAD, Bentley SewerCAD Version(s): 08.11.XX.XX Environment: N\A Area: Licensing Subarea: N\A Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description My company has the SELECT Open Access program and I see many different hydraulics and hydrology products (WaterGEMS, SewerGEMS, CivilStorm, StormCAD, PondPack, HAMMER,WaterCAD, SewerCAD) listed in the Municipal License Administrator tool. How can I limit my users from selecting the wrong products or product configurations accidently? Resolution What you will need to do is create what are called, "custom activation groups". These will allow you to place your users into a group and limit what licenses they have access to. This wiki technote will explain how you can do that: http://communities.bentley.com/products/licensing/w/licensing__wiki/6467.custom-activation-groups.aspx
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Wiki Page: "Object reference…" error when opening model with background file
Applies To Product(s): Bentley CivilStorm, Bentley SewerGEMS, Bentley SewerCAD, Bentley StormCAD Version(s): 08.11.xx.xx Environment: N/A Area: N/A Subarea: Original Author: Scott Kampa, Bentley Technical Support Group Problem Description When opening a model with has existing background files, the following error message is generated: "Object reference not set to an instance of an object" Reason On rare occasions, the file that stores the background files for the model, the .DWH file, can become corrupted. When this occurs, the error message above has been known to occur. Steps to Resolve The simplest way to resolve the issue would be to delete the .DWH file. When you open and save the model, a new .DWH file will be created. You will need to add the background files back into the model. As the error message is vague, it may be related to a different issue. It you do not want to deleted the .DWH file right away, you can try the following steps first. Copy the .STSW and .STSW.MDB files (or the appropriate files for the SELECTseries 2 versions of the products) into a new folder location. Open the model from this new folder. All backup, report, and supporting files will be ignored. If the error does not occur, close the model and move the .DWH file to the same folder location. Open the model again. If the error message occurs, the issue is with the .DWH file. If it does not occur, the issue is likely with one of the report or backup files.
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Wiki Page: "Object reference…" error when validating
Product(s): Bentley SewerGEMS Version(s): 08.11.05.58 Environment: N\A Area: Output and Reporting Subarea: N\A Problem When validating, the following error message is displayed: "Object reference not set to an instance of an object" Solution This is a generic error that data that is typically a result of data that is missing or outside of an acceptable range. For one instance of this, a catch basin's gutter shape was set to . Assigning this attribute resolved the issue. Original Author: Craig Calvin
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Wiki Page: Do the interpolation schemes used by HAMMER satisfy the Courant stability condition?
Applies To Product(s): Bentley HAMMER Version(s): 08.11.xx.xx Environment: N\A Area: Modeling Subarea: N\A Original Author: Scott Kampa, Bentley Technical Support Group Problem Description Do the interpolation schemes used by HAMMER satisfy the Courant stability condition? Solution Courant stability criterion is not relevant to the method of characteristics (MOC), but rather applies to explicit finite-difference solutions of hyperbolic partial differential equations. (The Courant condition imposes a maximum time step as a function of the spatial step and wave speed.) In MOC, there is no theoretical limit on the size of the time step for the sake of stability; practical limits arise on account of accuracy concerns due to complex boundary conditions at nodes and nonlinear frictional losses.
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Wiki Page: Why don't I see any of my pipes or nodes in the drawing after I use modelbuilder to build a model?
Applies To Product(s): Bentley WaterGEMS, Bentley SewerGEMS, Bentley CivilStorm, Bentley StormCAD, Bentley PondPack, Bentley StormCAD, Bentley HAMMER, Bentley WaterCAD Version(s): 08.11.XX.XX Environment: N/A Area: Modeling Subarea: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description Why don't I see any of my elements (pipes or nodes) in the drawing after I use modelbuilder to build a model? Resolution 1) First check to and make sure that in the last step of modelbuilder you select "Yes" to build the model. 2) Click View > Zoom > Zoom Extents 3) Go to Edit > Select All and see if something highlights in the drawing pane. The default highlight color is red. If you see something, try changing your drawing style from CAD (which is the default) to GIS style, which will help you see the elements (and then you can zoom into them). This is done from the icon on the element symbology manager. If you do a search for "drawing style" in the help documention there are step by step instructions for how to do this. You can also check the below article under See Also. If there are elements far off in the distance causing Zoom Extents to zoom too far out, this could be a problem with the spatial reference of the data that was imported (or a units issue) or a problem with the location of background files. You can try turning off background files one by one to test. See more about DXF backgrounds in the link under See Also below. 4) Try going to Tools > Database Utilities > Synchronize Drawing See Also How do I change the Drawing Style? When importing a DXF as a background, it does not show up in the model, even when pressing zoom extents.
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Wiki Page: Conduit Discharge is above design discharge user notification. Capacity(Design) vs. Capacity(Full Flow).
Applies To Product(s): Bentley SewerGEMS, Bentley CivilStorm, Bentley StormCAD, Bentley SewerCAD Version(s): 08.11.XX.XX Environment: N/A Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem What does the "Conduit discharge is above design discharge" user notification mean? What is the difference between the Capacity(Design) and Capacity(Full Flow) results fields? Solution This user notification means that the flow through the conduit is greater than the theoretical (Mannings equation based) capacity that you are designing for, which is given in the Capacity(Design) field. If this is a problem then you'd resolve it by making your conduit diameter larger. The automated design feature can also be used to size the pipes so this does happen (increase the pipe diameter until the flow is less than the design capacity). If you are already doing automated design and are seeing this notification, there are a few possible causes: There are no larger sized pipes in the conduit catalog with the same shape and material, with the check box set to be available for design The conduit type is set to user defined. Automated design will only work when set to a catalog conduit You have a design constraint set to limit the section size. See Section Size tab of the Default Design Constraints dialog. You may also notice that the same value is shown in both the "Capacity (Design") and "Capacity (Full Flow)" fields. The difference between the two fields is that the Capacity (Design) can be a fraction of the full capacity if the user has elected to do a "part full design". The default design options are set to design the pipe based on 100% full. Meaning, select a pipe size at which the flow through the pipe is less than the Mannings-based flow through the pipe when the depth is equal to the rise (100% full). In some cases though you may want to design a conduit to a partially full value like 75% of the Capacity(Full Flow) of the conduit. This is done in the default design constraints manager, which can be accessed by going to Components > Default Design Constraints and clicking the check box for "Is Part Full Design?". See Also What is the difference between Capacity (Full Flow), Capacity (Design), Capacity (Excess), Capacity(Excess Full Flow)?
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Wiki Page: Troubleshooting Automated Design Results
Applies To Product(s): Bentley SewerGEMS, Bentley CivilStorm, Bentley StormCAD, Bentley SewerCAD Version(s): 08.11.XX.XX Environment: N/A Area: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem When using automated Design in the GVF Rational (StormCAD) or GVF Convex (SewerCAD) solvers, the design decisions do not appear to be correct, or appear to not be following the constraints. What are some tips for troubleshooting such issues, which typically are due to design priorities? Solution 1) Check your user notifications and see if there are any notifications that point to specific constraints or properties to check. For example, a user notification such as, "Conduit Discharge is Above Design Discharge" might lead you to go to the Gravity Pipe tab in the design constraints manager and check over all your settings. In this case you might check the "Limit Section Size?" setting. 2) Check all the design constraints in all the constraint tabs (Components > Default Design Constraints) to make sure the values are correctly entered. You might want to also do this using a flextable to check all your pipe settings at once and/or check one conduits properties in the property grid because it might be easier to focus on just one conduit at a time. 3) Check to make sure the "Design Conduit?" property is set to True for you conduits and other boolean fields for pipes are set appropriately for what you'll be designing for the conduits. Check to make sure the "Design Structure Elevation?" is set on all your node elements (manholes, catch basins, outfalls, etc...) if you're planning to have the design tool change the structure inverts or other properties. 4) In the calculation options (Analysis > Calculation Options) make sure the calculation type is set to "Design". 5) Review the below article to understand how design constraints are prioritized What is the order of the design priorities used in StormCAD (GVF-Rational solver) and SewerCAD (GVF-Convex solver)? See Also Automated design with different conduit materials and shapes Automated design only on certain elements Is there any way to only adjust the pipe size without changing the invert? Is StormCAD able to use open channels with automated design? Unable to design pipe sizes/inverts when Conduit Type set to User Defined
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Wiki Page: Designer engine experienced an unexpected error
Product(s): Bentley WaterCAD, WaterGEMS Version(s): 08.11.06.58 Environment: N\A Area: Calculations Problem When computing a Design Study in Darwin Designer, the following message appears: "Designer engine experienced an unexpected error. Please contact technical support " Solution One possible cause of this issue is bad entries in your Pre-Rehabilitation Diameter vs. Post-Rehabilitation Diameter table. To resolve this, go to the Design study > Cost/Properties tab > Rehabilitation>RehabCost Table1, click the ellipsis button next to "Function-0", then click Function0 in the list. Note that there are two rows at the bottom with zeros for both the "Pre-Rehabilitation Diameter" and "Post-Rehabilitation Diameter". Delete these (by clicking the row header and pressing the Delete key) or enter a positive value, click Close, then compute "Design Run - 1". Now it should run without error. A defect has been filed to investigate a more specific message in this case, in a future version - reference number 357579. See Also
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Forum Post: RE: Error in "Darwin Designer to optimization a pipe network" showing Designer engine experienced an unexpected error. Please contact technical support
Hello Ashutosh, Thanks for sending your model files (via private message conversation). This error appears to be due to some bad entries in your Pre-Rehabilitation Diameter vs. Post-Rehabilitation Diameter table. To resolve this, go to the Design study > Cost/Properties tab > Rehabilitation>RehabCost Table1, click the ellipsis button next to "Function-0", then click Function0 in the list. Note that there are two rows at the bottom with zeros for both the "Pre-Rehabilitation Diameter" and "Post-Rehabilitation Diameter". Delete these (by clicking the row header and pressing the Delete key) or enter a positive value, click Close, then compute "Design Run - 1". Now it should run without error. I have documented this fix in the below Support Solution: Designer engine experienced an unexpected error I have also reported this to our Development team so they can look into providing a more specific message in a future version (reference number 357579). I opened a Service Request on your behalf and linked it to this development report. That way, if/when this is addressed in a future release, you'll receive a notification.
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Wiki Page: Including multiple invert elevations in a profile
Applies To Product(s): StormCAD, SewerCAD, SewerGEMS, CivilStorm Version(s): 08.11.05.58 Environment: N/A Area: Output and Reporting Subarea: Original Author: Scott Kampa, Bentley Technical Support Group Problem Is it possible to display the invert elevations of multiple conduits coming into a node on profile plot in the storm and sewer products? In other words, can I visually see the lateral / branch pipes that connect into a profile? Solution - Structures If a node, such as a manhole, junction, or catch basin has more than two pipes/conduits connected to it, there is not way to visually display where the connections might be in a profile. However, you can annotate the Engineering Profile to include the other invert elevations. In StormCAD and SewerCAD, there are results fields in the manhole element called "Elevation (Invert in 1)," "Elevation (Invert in 2)," etc. "Elevation (Invert in 1)" is the invert elevation of the first incoming conduit for a manhole. If there is only one, the invert elevation of the upstream conduit will be listed there. "Elevation (Invert in 2)" will be the invert elevation of the second incoming conduit. In the Engineering Profile, you can annotate based on any number of results and user-defined field. If you want to display the invert elevations of multiple incoming conduits, you would need to include results for the "Elevation (Invert in 1)," "Elevation (Invert in 2)," etc., fields. Note that if some conduits only have one incoming conduit, any annotation for "Elevation (Invert in 2)" will be listed as "N/A". This additional fields are not included in SewerGEMS and CivilStorm, but if you are using the StormCAD or SewerCAD solvers in these programs, the fields will be available. Graphical representations of multiple conduits As noted above, there is currently (as of version 08.11.05.58) no way to model graphical representations of where multiple incoming conduits are located. This feature may be included in future releases of the storm and sewer products. However, this functionality is currently available in come civil products, such as Bentley InRoads Storm and Sanitary. From SewerGEMS, you could export the model to the InRoads format and create the profile there, if you need to see a graphical representation of the conduits not already in the profile. Solution - Taps and Laterals As of the V8i SELECTseries 5 release (08.11.05.58), two new element types are included: Taps and Laterals. Read more about that here . A tap can connect along the length of the conduit, without the need to split the conduit using a node such as a junction. In this case, the connection of lateral is shown in profile view at the tap location. Example: See Also Creating User-Defined Profile Settings Sanitary Profile Branches StormCAD Profile plot showing multiple inverts (ie. laterals) at a structure
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Wiki Page: Correct Service Area Layer Node ID not showing in dropdown (Solution 500000094954)
Product(s): Bentley SewerGEMS, SewerCAD, WaterCAD, WaterGEMS Version(s): 08.11.02.75 Environment: N\A Area: Layout and Data Input Subarea: N\A Problem In Loadbuilder, when I input a shapefile for the service area layer, the dropdown menu "Node ID Field" only displays some of the fields from the shapefile and does not display the field that contains the node IDs. Why? Problem ID#: 81311 Solution The Node ID field that you have might be of the type "Text", whereas Loadbuilder is expecting this field to be a numeric type field. What you'll need to do is create a Node ID field in your shapefile that is of type "Double, Long Integer, Short Integer, etc..." in order for it to show up for you. See Also
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Wiki Page: There is a formatting error in the SWMM input file ... (Solution 500000088388)
Product(s): Bentley SewerGEMS Version(s): 08.11.XX.XX Environment: N\A Area: Layout and Data Input Subarea: N\A Problem When you try to import a SWMM file you get a red user notification that says: "There is a formatting error in the SWMM input file. Check line [line number] in section [Section Name]." Problem ID#: 71537 Solution Try opening the file in EPA SWMM and resave the file with a different name. You can also open the file in SWMM and look at the properties of the referenced element to see if you can find anything that looks strange. If you see something you can then try to fix it and save the file. See Also
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Forum Post: How to determine the liquid level/volume in a hydropneumatic tank before and after a transient event? (Bentley Hammer V8I)
I want to be able to determine the volume of liquid in my hydropneumatic tank before a trip (during start up) and after a trip (to see the rate of change of volume and how fast/slow it oscillates. Is this possible? My attempts at start-up have been to initialize the volume at 0 and run an EPS to try to start the pump from 0 flow and allow tank to fill. The result is "Calculated tank volume = N/A" After the transient event I have not been able to determine liquid volume oscillations that I assume would mirror the water flow data from the transient results viewer. Any help or direction? Thanks
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Forum Post: RE: Gutter Spread in Sag Location
Could you please upload a copy of your model and specify the area in the model to look at as per your problem description of inlets. There are two options for sharing your model files on Communities. If you would like the files to be visible to other members, compress the files into a zip file and upload them as an attachment using the ‘Advanced Reply editor’ before posting. If your data is confidential, you can follow the instructions in the link below to send it to us via Bentley Sharefile. Files uploaded to Sharefile can only be viewed by Bentley. communities.bentley.com/.../7079.be-communities-secure-file-upload If you send the model, please post here so we know it is available.
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Forum Post: how to add mainline and LATERALLINE in hydrolic model
how to add mainline and LATERALLINE in hydrolic model in watergems ,,,, how to make diffrant for mainline and lateraline in hydrolic model thank you
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Forum Post: RE: how to add mainline and LATERALLINE in hydrolic model
Hello Ahmed, Are you trying to build the model, using some data source? If you have data in the form of dxf, shape file etc. you can import that using Modelbuilder. Here is the technote on importing data through Modelbuilder. http://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/2821.building-a-model-using-modelbuilder-tn About mainline and lateral lines, they both are built/imported the same way in the hydraulic model, but you can differentiate them. The main lines will have larger diameter and the laterals will have smaller diameters, you can use the element Symbology to color code the different diameters, this way you can differentiate them. Or you can create a selection set of the main line pipes and assign specific color to them. Here is information on adding color coding to elements. http://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/10112.how-do-you-add-color-coding-or-annotation-to-an-element Regards, Sushma.
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Forum Post: RE: how to add mainline and LATERALLINE in hydrolic model
Please explain when the junction is placed in the pipe ,,,,,,,,,, How long is the difference between the main lines and LATERAL LINE in the creation of the JUNCTION like this is latralline connection to meterpoint in this circle me put mark here no put junction so that watergems report here error this is roles in geometry network Mainline complex junction lateralline simple junction why watergems put error in this like this please help me ,,,,,
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