Hello Jesse, thank you for your Input. This clarified a few things and I now have a model yielding plausible results. However one thing remains strange. When going to Components > Common > Storm Data > Global Storm Events I can Input a duration for the Modified Rational. This Duration corresponds to the calculated storm Duration upon computing the model. However each time I open the Global Storm Events Dialog the Duration Field again shows 0.000. Although computing calculates with the value I put the last time I entered a value in this field. In the calculation summary the storm duration is not marked. The only way I found to verify the storm Duration after computation is to look at the generated catchment outflow. Is there another way to directly report the storm Duration? I also have an additional question concerning the physical model. I have a pipe Network with 2 critical Points where the water rises and causes cellar flooding in case of strong rainfall. Parallell to the stormwater pipes there is a lower, sewage conduit. So an intermediate solution is to open an Overflow to allow the surcharged storm pipe to dispose a part of the water into the sewage pipe. So basically what I Need is the pipe continuing to Transfer discharge but some of the water being evacuated out of the System by an outfall. How can I model this? If I understand it correctly an outfall always extracts all the water that flows in. So would a cross section or manhole in the existing pipe with invert Elevation at the Overflow height, very sh ort length and subsequent outfall yield realistic results for this kind of a Situation? Many thanks and best regards
↧
Forum Post: RE: Modelling Storm Event runoff using IDF in Sewer CAD
↧
Forum Post: RE: Multi Species Analysis
Hello Steven, I could not reproduce the issue you are having. Here are the steps I completed in attempt to reproduce Open: C:\Program Files (x86)\Bentley\WaterGEMS\Samples\Example9.wtg Set the current scenario to "Chlorine tracking via Multi Species Analysis with ROS2-Solver". Edited the calculation option "Y2000 - Chlorine tracking via Multi Species Analysis with ROS2-Solver" Set "Multi Species Analysis Setup" to "Monochloramine Decomposition". I imported this from the Engineering Libraries, which is identical to the one you posted. Edited the "Model Configuration" to match the one you posted. The only change I made was to the [SOURCES] to 112, to match this example model. The model computed successfully, without any user notifications. I will note that the error you are receiving "Could not solve reaction equilibrium expressions" is mentioned in the " EPANET Multi-Species Extension User's Manual " on page 112. Error 514: could not solve reaction equilibrium expressions. The nonlinear equation solver employed by EPANET-MSX could not successfully solve the system’s set of equilibrium equations at the current simulation time. Users must insure that the initial conditions set throughout the pipe network are sufficient and consistent so that a solution exists for the governing set of equilibrium equations. Do you receive any user notifications if you set the calculation options Calculation Type to "Hydraulics Only"? What product and version are you using? As Sushma requested, please provide your model files so we can provide specific suggestions.
↧
↧
Wiki Page: Error using TREX with LandXML file: "Object reference not set to an instance of an object."
Product(s): WaterGEMS, WaterCAD, HAMMER Version(s): 10.01.00.72 Area: Layout and Data Input Problem When using the TREX (Terrain Extractor) tool with a LandXML file the following error is returned. TRex Wizard: "Object reference not set to an instance of an object." A similar error has been known to occur when using ArcGIS DTM files in TRex when in the ArcGIS platform. Solution Contact Bentley Support for the latest patch set, or upgrade to a newer version when available. [Defect #: 813548] See Also Cumulative patch sets for Hydraulics and Hydrology products
↧
Forum Post: RE: Multi Species Analysis
communities.bentley.com/.../201802-Model_5F00_DFW.wtgpkg.zip Sushma, Craig, Thank you for your response. The requested file is uploaded. THere are no user notifications when using a "hydraulics Only" Calculation Type. I am using WaterCAD CONNECT Eddition Update 1. Thanks, Steven Swain
↧
Forum Post: RE: Modelling Storm Event runoff using IDF in Sewer CAD
(The previous reply has been moved here )
↧
↧
Forum Post: RE: Global storm duration and overflow modeling
Hello Loretan, Since these are separate topics, they are best handled as separate forum threads. I cannot split your reply in half, but I have split the post itself to a new thread. For any future, separate questions/topics, please create a new thread and feel free to reference the hyperlink to an existing thread if needed. Regarding the storm duration issue - I tested this in the latest version (CONNECT Edition Update 1) and was not able to reproduce. Is it possible that you are clicking the "X" in the upper-right corner to exit the global storm events dialog? (instead of the "close" button?) I noticed that doing this will not commit any changes to the model, and hence the duration will revert back to the default of zero. The problem with this theory though, is that the model would normally fail to compute if the storm duration in the global storm events dialog is zero to zero. Plus, you mentioned that the runoff hydrograph peak appears to be using the previously entered duration? (based on Q=CIA using the intensity corresponding to that duration?) Can you confirm that the scenario you are computing is using the rainfall runoff alternative corresponding to the row in the global storm events dialog that you are editing? Are you able to change it in the Rainfall Runoff alternative itself? Also, can you confirm what version you're using? You can check under File > Help > About, or Help > About (if on V8i) Another thing you can do to help narrow down this problem is to test in one of the sample files, as I have done. These are located in the Samples folder within the SewerCAD installation folder. For example I opened Sample1.stsw, imported the sample IDF table from the engineering library (in the Storm Data manager), then opened the Global Storm Events window, selected the IDF event, entered a duration, clicked "close", then reopened. If you find that the change "sticks" in the sample file, please provide a copy of the model in question so that we may attempt to reproduce on our end: Sharing Hydraulic Model Files on the Haestad Forum Regarding the reporting of the duration - this is not directly included in standard reports in SewerCAD, likely because it mainly used in CivilStorm, SewerGEMS or PondPack. In SewerCAD normally you could reference the value seen in the global storm events dialog or in the rainfall runoff alternative, so we'll want to get to the bottom of why that's not working for you. If you needed to include it in reports, you could consider using the report button in the rainfall runoff alternative. However, I would recommend considering one of the aforementioned applications instead.
↧
Forum Post: RE: Global storm duration and overflow modeling
Loretan, Regarding modeling the overflow pipe - in SewerCAD this would need to be done using a Diversion Link. You can read about modeling diversions in this article: Modeling a flow split (diversion) with the SewerCAD or StormCAD numerical solver Basically the pipe that directs overflow to the sewer would be set as a diversion by choosing "true" for "is diversion link?". You would then need to set up the table of upstream flow vs diverted flow, to model the overflow as a function of upstream flow. You could run a series of tests to see what the flow would be at the point where the HGL reaches the invert of the overflow pipe. Based on the questions you are asking, I would recommend looking into SewerGEMS. SewerGEMS would enable you to model this flow split automatically without having to set up the diversion rating table, and has better reporting for rainfall/hydrology, among other things. See the following article for a bit more background on the SewerCAD solver compared to the implicit and Explicit available in SewerGEMS: Differences between the solvers: GVF-Convex vs. GVF-Rational vs. Implicit vs. Explicit (SWMM)
↧
Forum Post: RE: How to run clash check of a SewerGEMS model in Navisworks
Hello Shuchita, If you are having civil products of Bentley like OpenRoads Designer, PowerInRoads or Navigator you can perform clash detection using it. You can export the model from SewerGEMS as i-model and then import that into Navigator and perform clash detection. Or you can export model as shapefiles and import that into civil products like ORD (openroads designer) and then perform clash detection. How to achieve that is mentioned in the below wiki. Performing clash detection
↧
Wiki Page: Does HAMMER support initially negative pressures?
Product(s): Hammer Version(s): 08.11.XX.XX, 10.XX.XX.XX Area: Modeling Problem Does HAMMER support initially negative pressures? Problem Number 29948 Solution Yes, it does, but there are two things to consider: 1) Make sure the initial conditions pressure is not negative at demand nodes. 2) Make sure the initial conditions pressure is not below the vapor pressure limit. These conditions are not supported with the transient solver. Model should be prepared for transient analysis before importing that into Hammer, e.g. error like network unbalanced or pressure below vapor pressure. See Also User Notification "Initial pressure less than vapor pressure. At the pipe end(s), the elevation(s) or head(s) are incorrect" Preparing an existing model for a transient analysis in HAMMER
↧
↧
Wiki Page: Design conduit inverts without changing conduit diameter
Product(s): SewerCAD, StormCAD, CivilStorm, SewerGEMS Version(s): 08.11.XX.XX, 10.XX.XX.XX Area: Calculations Problem Is it possible to have the automated design feature design a conduit's inverts but not the size? Can I "set" the pipe diameter and have the program design only the inverts? Problem ID#: 61071 Solution Currently (as of 10.01.00.70) it is not possible for the program to automatically design the inverts but not the size. This has been logged as a feature request for future consideration. The typical use case, which the program was designed for, is the design of a proposed system where both the sizes and the inverts are designed. Keeping the sizes the same would indicate that you may be redesigning an existing system using the existing conduits, but possibly burying them at a different depth. This is a bit of an atypical case, hence the need for a workaround. Here's what you can do to workaround this issue: 1) Open your conduit flextable and add the label column along with the diameter column and place them next to each other. 2) Sort your conduit table by ascending labels by right clicking on the label column header and choosing Sort > Sort Ascending. 4) Highlight all the records for the label and diameter columns and hit the CTRL + C to copy them 5) Open a new Excel spreadsheet and paste the information in. 6) In the conduit flextable add the conduit type, conduit class, and size fields if they're not already available. 7) Global edit the conduit type from "User Defined" to "Catalog Conduit". You do this by right clicking on the conduit type column header and choosing global edit. 8) Open the conduit catalog (Components > Conduit Catalog) and add in some conduit shapes and make a few sizes available for design by checking the box labeled "Available for design?". If you want you can just import some from the engineering library by clicking on the drop down arrow next to the book icon and choosing import from library. 9) In the conduit flextable right click on the conduit class field and choose to global edit it. Choose one of the shapes. Now right click on the size field to global edit that then choose one size for all the conduits. 10) Run the software in design mode to update all your inverts. 11) Open your conduit flextable and global edit the conduit type field to "user defined". Make sure all your conduits are still sorted by label in ascending order. 12) Copy the diameter information from the Excel spreadsheet and paste it back to the diameter field in the flextable. 13) Recompute the model. See Also Is there any way to only adjust the pipe size without changing the invert?
↧
Wiki Page: Junctions are created on top of one another after using ModelBuilder with the GIS-ID property
Product(s): WaterGEMS, WaterCAD, SewerGEMS, SewerCAD, CivilStorm, StormCAD, Hammer Version(s): 08.11.XX.XX, 10.XX.XX.XX Area: Layout and Data Input Problem After a modelbuilder run, using GIS-ID as the label, when you open and look at the manhole flextable you have twice as many junctions as there should be. That is, junctions were created directly on top of each other. Solution This could be the result of a data mismatch with your GIS-IDs. If the field your GIS-ID is set to uses a different unique identifier than what your upstream and downstream node fields are set to in your pipe field mapping then modelbuilder will create duplicate junctions because it doesn't recognize the upstream and downstream node IDs you have provided it. More simply in specifying the GIS-ID field you are telling it to use one unique identifier for the junction label (ex. 1234, 1235, 1236, etc..) but, your upstream and downstream node ID fields on your pipe mapping are using another field name that uses a different unique identifier than your GIS ID(ex. MH-1, MH-2, etc...). To resolve this issue, make sure that you GIS-ID field and your upstream and downstream node fields for you pipe reference the same unique identifiers. See Also Building a Model with ModelBuilder Junctions appear to overlay a pipe instead of connecting to it Unexpected pipe connectivity after ModelBuilder import
↧
Wiki Page: Preserving symbology in DGN file for Hydraulics and Hydrology products
Product(s): WaterCAD, WaterGEMS, Hammer, StormCAD, SewerCAD, SewerGEMS, CivilStorm, PondPack Version(s): 08.11.XX.XX,10.XX.XX.XX Area: Output and Reporting Problem In plain MicroStation, when opening or referencing a DGN file that was part of a Hydraulics and Hydrology product (such as a StormCAD for MicroStation model), the color coding and annotation does not show up (it either does not appear, or color coding/annotations that were unchecked in element symbology show up) How can I ensure that the color coding and annotation that I see in the Microstation integrated mode of my Hydraulics and Hydrology product shows up in the same way when opened or referenced in plain MicroStation or a Bentley PowerPlatform product? Problem ID#: 92117 Solution When working in the MicroStation integrated mode, the symbology is a "transient" element and does not save with the DGN file as changes are made, unless you explicitly tell it to. To do this, click the Hydraulics and Hydrology product menu (such as WaterGEMS), then click File > Save Symbology to DGN. Then, click File > Save. Now when the dgn file is opened in plain MicroStation, annotations and color coding that were checked should appear. If you have a version of WaterGEMS, WaterCAD or HAMMER below 08.11.04.50, there was a known issue with disabled symbology still showing up in the DGN (items that were unchecked in element symbology). This has been addressed in version 08.11.04.50 and in other Hydraulics and Hydrology products release after May 2013. Also, currently inactive node elements that were set to disappear in WaterGEMS/WaterCAD/HAMMER (by unchecking "display inactive topology in the Tools > Options menu) will still appears in a gray color (by default.) You can use these steps to manually remove them in plain MicroStation: Start the select tool Show tool settings details Go to the Color tab and select the "Inactive Color" (typically gray) Delete the selected elements See Also Creating a DGN file from a hydraulic model, with annotations hidden Assign elements and annotations to specific levels when a project is attached to a DGN in MicroStation
↧
Wiki Page: Error when opening a model created in an older version
Product(s): WaterGEMS, WaterCAD Version(s): 08.11.XX.XX Area: Layout and Data Input Problem Error appears when opening a model created in an older version of WaterGEMS/WaterCAD in SELECTSeries 2: Could not load file or assembly 'Haestad.Water.DataExchange, Version=4.2.0.10, Culture=neutral, PublicKeyToken=b4db808388021f6e' or one of its dependencies. This application has failed to start because the application configuration is incorrect. Reinstalling the application may fix this problem. (Exception from HRESULT: 0x800736B1) Problem ID#: 59551 Solution As a workaround, open the file in SS1 first, then save it. Then you will be able to open it in SS2. See Also Error importing old model file: "Object reference not set to an instance of an object"
↧
↧
Wiki Page: System Disconnected or Junction Disconnected user notification messages
Product(s): SewerCAD, SewerGEMs, CivilStorm, WaterCAD, Hammer, WaterGEMS Version(s): 08.11.XX.XX, 10.XX.XX.XX Area: Calculations Problem User notification, "System Disconnected or Junction Disconnected because of element ", when computing a model. Problem ID#: 58910 Solution At the time step when this user notification occurs the system is disconnected because of the element listed. This can happen if the upstream wet well becomes full or empty and the built-in altitude valve shuts the adjacent pipe. To check for this, graph percent full for the wet well. You can also, check your pump controls to make sure they're set up so that the wet well never becomes full or empty. For further information on what happens when a wet well or tank becomes full or empty please refer to this wiki . Futhermore, this user notification can be generated if a pump has been turned off by the controls or if the pump flow is zero at this time step and there are downstream demands See Also Disconnected Demand Nodes user notification when computing model User notification for nodes disconnected from an outfall, however all nodes appear to be connected
↧
Wiki Page: My results are different after having applied a demand to a model using Loadbuilder and then merging some of the junctions
Product(s): WaterCAD, WaterGEMS Version(s): 08.11.XX.XX, 10.XX.XX.XX Area: Modeling Problem I have applied a demand to a model using Loadbuilder and then merged some of the junctions. If merge the junctions first and then apply the demand with Loadbuilder, I get different results. Why is this happening? Solution When going through the Loadbuilder steps, on the first screen after choosing the shapefile, there is an item called "Use Previous Run." As a computation time saving measure, if this item is checked, it will pull in spatial data used previously and apply this to the model. If this is checked, it will not apply the demand as desired. For large models where precision might not be necessary, this would save time. By unchecking this item, the demands for the merged model and the unmerged model are the same. See Also Troubleshooting and Understanding LoadBuilder Loadbuilder error: "There are no results available for the given input parameters"
↧
Forum Post: RE: SewerGEMS how to define catchment subareas by SF/acre and not by percentage?
Maybe I should have rephrased my question. I just recently switched to SewerGEMS from PondPack for H&H modelling. How do you calculate a RCN with multiple components in a subwatershed by using areas? I don't see a way to change input from percentage of the watershed to a square foot or acreage input. My older version of PondPack had subareas entered directly as an area measurement which, by using AutoCAD, was easy to produce. Now I have to get the total area and divide the measured subareas (impervious, different HSG's, etc) to get a percentage. It adds an additional step. Is there anyway to input directly as an area measurement?
↧
Forum Post: RE: SewerGEMS how to define catchment subareas by SF/acre and not by percentage?
Hello Raymond, Currently the subarea feature in SewerGEMS can only specify areas based on a percentage of the total area. The advantage of this is that it is easier to validate that the numbers add up to 100%, compared to PondPack where you need to rely on a user notification if the total area does not add up to the area defined in the catchment properties. That said, I will discuss with my colleagues if the subarea feature can be expanded to offer the option to specify by area. In the meantime, if you have the area data in an external format such as a spreadsheet and can set up a function to compute the percentage, you could use ModelBuilder to import that data. See: Using Modelbuilder to import or export catchment Subarea data I will be in contact with you shortly regarding your question on the CN description.
↧
↧
Forum Post: RE: Global storm duration and overflow modeling
Sorry for the inconvenience. Next time I will start a separate thread. So for the storm Duration issue I figured out that the storm Duration is correctly listed in the Rainfall alternative field. This Duration is updated when entering a new value in the global storm Events Dialog and pressing Close. So actually I do have a way to reference and Report the storm Duration via the Rainfall alternative Dialog which is sufficient for what I Need right now.. It's still strange though that the global storm Events Dialog always Shows Zero for the Duration. I am using CONNECT Edition Update 1. This behavior is reproduced when opening the sample file as suggested. What files would you need in order to investigate what may be the cause of this?
↧
Forum Post: RE: Global storm duration and overflow modeling
Hi Loretan, Could you post a screenshot of the global storm events window? For the model files (you could just add the sample model that you can reproduce it in), please compress the .STSW and .SQLITE files into a zip file and attach that to your reply. See the link in my previous reply for more.
↧
Forum Post: WaterGEMS can't start because AecBase.dbx is "missing".
Hey there team, I updated my computer to Autodesk 2018 software this morning, including a fresh install of AutoCAD 2018, and AutoCAD Civil 3D 2018. After the fresh install, I find I get the following error when trying to open a model in WaterGEMS. Other Bentley programs (WaterCAD, HAMMER, etc) have the same issue. "The program can't start because AecBase.dbx is missing from your computer. Try reinstalling the program to fix this problem." To be clear, WaterGEMS and other Bentley software boots just fine, but as soon as I try to open a file I get the above error. I have never used the AutoCAD/Bentley integration tools, so I'm not totally sure what's driving this Autodesk-related error. I DO have background layers in the file that are .dxf file formats, but that is it. I uninstalled all 2018 Autodesk software (leaving my pre-existing 2016 Autodesk software in place), and the problem seemed to resolve itself. With that knowledge, I decided to uninstall all Bentley software, reinstall the 2018 Autodesk software, reinstall the Bentley software, and.... the error returned. Darn it! I browsed to C:\Program Files\Autodesk\AutoCAD 2018 and the AecBase.dbx file most certainly exists. It also exists in C:\Program Files\Autodesk\AutoCAD 2016. For now, I've gone back to Autodesk 2016 and everything is working like normal, but this isn't a permanent fix. Any ideas? Our team is upgrading to Autodesk 2018, so not upgrading Autodesk unfortunately isn't an option.
↧