Hello Ken, In addition to Craig's response, what is the operating range you have specified for tank operation? Along with the "reporting time" it would be good to check the tank levels you have specified. Here is a reference article which can help you understand the tank operating range; Understanding Tank Operating Range Hope this helps.
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Forum Post: RE: WaterGems Model of Water Tank - Level Drops Faster Than Flow Out Dictates
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Wiki Page: Can StormCAD import an Autodesk (AutoCAD) storm sanitary analysis (SSA) file?
Product(s): StormCAD Version(s): 08.11.06.83 Area: Layout and Data Input Problem Description Can StormCAD import an Autodesk (AutoCAD) storm sanitary analysis (SSA) file? Background StormCAD cannot directly import an SSA file, however there are ways that you might be able to get the information from the SSA into StormCAD. Steps to Resolve Option 1 - Save the SSA file as a LandXML file, which StormCAD can import Option 2 - Export your SSA file elements to shapefiles/CAD files and build your StormCAD model using the modelbuilder tool. You can find directions for how to use modelbuilder here . See Also What files are necessary to work with the Hydraulics and Hydrology products in the AutoCAD environment?
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Forum Post: RE: Reduction in flow from reduction in peaking factor
Thank you sir.
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Forum Post: Conduit Invert(start) & Invert(Stop) showing reverse compare to its flow direction
Sir, I have created sewer model in SewerGEMS using model builder(Conduit, MH & Outfall) function. After designing network, I found many conduit start node & stop node indication was showing in reverse and same for invert start level & invert stop level is in reverse. If I will change conduit start & stop node manually from property table issue solved, But for my case network is too large then how I will solve this issue. Thanking You Rohit Vaghasiya
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Forum Post: RE: How to renumber manhole as per flow direction
Thank You Sir
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Forum Post: RE: Conduit Invert(start) & Invert(Stop) showing reverse compare to its flow direction
Hello Rohit, When building the model using Modelbuilder, start and stop nodes will be taken as per direction using which they are drawn in source file say AutoCAD drawing. E.g. if line is drawn from A to B, after importing A will be start point and B will be end point. You would need to reverse the start and stop nodes for these pipes in bulk, using Modelbuilder, as your network is too large to change it manually one by one. Please follow the steps provided in below wiki, to change pipe directions in bulk using Modelbuilder. Reversing orientation of Pipes and Conduits in Bulk
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Forum Post: RE: Conduit Invert(start) & Invert(Stop) showing reverse compare to its flow direction
Thank You Madam
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Forum Post: How to use wet well & pump combination in SewerGEMS?
Dear Sir/Madam, I am designing sewerage network using SewerGEMS. Right now I am using outfall as a pumping station instead of our Wet Well. Collected sewage flow at outfall/pumping station I need to add that flow to next higher or proposed near by Manhole (where I am discharging flow) manually. I need to do this exercise number of times frequently. So by using wet well & pump combination is it possible to reduced this manual exercise?? Because number of proposed pumping station are more in my case. Please guide me so I will use that function. Please also suggest me that what are the basic data require for using Wet Well & Pump. Thanking You Rohit Vaghasiya
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Forum Post: RE: How to use wet well & pump combination in SewerGEMS?
Hello Rohit, It is always better to model the conditions as they are on field, so if you are lifting the water from wet well into next gravity manhole using pump stations, then you should model pump , wet well & pressure pipes as well in the SewerGEMS model. So instead of outfall, you should discharge water into wet-well>pressure pipe>pump>manhole... To understand how to set up wet well, pump, manhole & pressure pipes, please have a look at sample models 3 & 4 located at C:\Program Files (x86)\Bentley\SewerGEMS\Samples. Data required for wet well is base level/elevation of wet well, initial & maximum elevation, its diameter/sizes etc. & that for the pump is pump curve / definition, pump on-off levels, pump elevation, invert level etc. Please have a look at these examples, you will understand how to input data & what is required as well.
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Wiki Page: How does the license size work for the different Haestad storm and sewer products?
Applies To Product(s): SewerGEMS, CivilStorm, StormCAD, SewerCAD Version(s): 08.11.XX.XX Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How does the licensing work for the storm and sewer products (SewerGEMS, CivilStorm, SewerCAD, StormCAD? If I own a license for SewerGEMS how many inlets do I get in my license if I used the GVF-Rational(StormCAD) solver in SewerGEMS? Solution SewerGEMS is licensed by the total number of links that you have in your model. Links are considered to be Gutters, conduits, pressure pipes and channels. The hydrology won’t compute if you exceed the licensed number of links. If you switch solvers to the GVF-Rational solver (StormCAD), the GVF-Convex solver (SewerCAD), or the Explicit (SWMM) solver SewerGEMS is still licensed by the number of links you have in your model. SewerCAD like SewerGEMS is also licensed by the number of links, which includes conduits and pressure pipes. CivilStorm like SewerCAD and SewerGEMS is also licensed by links. Gutters, conduits, and channels are all counted. Just as SewerGEMS the choice of solver you choose is irrelevant to how the product is licensed. StormCAD is licensed by the number of inlets. Only catch basins/inlets are counted towards that number. Inactive Elements Whether or not inactive elements are counted toward your license depends on your version. With the CONNECT Edition, inactive elements do not count. For V8i and below, inactive elements are counted. See: Do inactive elements count against the license count?
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Wiki Page: Modeling an Ideal Pump (Outflow matches Inflow)
Product(s): SewerGEMS, CivilStorm Version(s): As of 10.01.01.04 Area: Modeling Problem Is it possible to model an "Ideal" pump, where the outflow from the pump will match the inflow? This might be used for example for preliminary design before the pump is sized. Solution Currently it is not possible to directly model an Ideal pump, but this may be considered in a future release (Enhancement # 222975) In the meantime, the best option would be to use the Flow-Depth pump curve type. This will allow you identify the flow for a given depth in the wet well. While not the same as the ideal pump curve option available in EPA-SWMM, it may be the easiest to work with for most models. Another option would be to use the SewerCAD solver. There is an option for using pumped flows in model calculation, to reproduce the wetwell inflow into the downstream receiving gravity main. You could also try applying an inflow to a pressure node instead of using the wet well and pump. Basically, you would have a base inflow and a pattern for the change in flow. This would work best at an upstream node. Otherwise, it would take some trial and error to find the right flow pattern. If you are wanting to pass along wetwell inflow into the next-downstream gravity node, you could copy/paste the wetwell inflow hydrograph as a hydrograph load on the downstream manhole. See Also Difference between Depth vs Flow and Depth Flow (simulated Variable Speed) pump definitions
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Forum Post: RE: How to use wet well & pump combination in SewerGEMS?
Rohit, Can you tell us a bit more about why you are wanting to directly pass the wetwell inflow into the downstream receiving gravity manhole? Are you trying to assume an "ideal pump" for preliminary design, before the pump is sized? Which numerical solver are you using? In SewerGEMS you have the option of using the GVF-Convex solver, which is typically used for design, as it has an automated design capability. The automated design capability in the GVF-Convex solver does not apply to pressure pipes/pumps, but you could potentially use the "Use Pumped Loads" calculation option to directly pass the wetwell inflow into the next downstream manhole. You'd still need to connect a wetwell, pump and pressure pipes, but this might be what you're looking for. See related article from our Wiki: Modeling an Ideal Pump (Outflow matches Inflow)
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Product release (estimated) - Storm/Sewer
Estimated release date for Storm and Sewer CONNECT Edition Update 2: end of September, 2018. Subject to change. This applies to the following products: SewerGEMS SewerCAD CivilStorm StormCAD How can I find out when a new version or patch is released for a Hydraulics and Hydrology product?
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Wiki Page: Should the EPANET solver and the WaterGEMS/CAD solver give the same results for a model?
Applies To Product(s): WaterGEMS, HAMMER, WaterCAD Version(s): CONNECT Edition, V8i Area: Modeling Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Should the EPANET solver 2.00.12 (2.00.10) and the WaterGEMS/CAD solver 2.00.12 (2.00.10) give the same results for a model? Which solver is more accurate? Solution The WaterGEMS and WaterCAD’s default numerical solver has many improvements above and beyond the core EPANET solver used to calculate hydraulics. Therefore, small differences in results are expected when comparing WaterGEMS or WaterCAD results to results in the EPANET program. To assist in cases where a user may want to solve hydraulics without these improvements, the “Engine Compatibility” calculation option can be used. For example, if you’re comparing results from the 2.00.12 version of the EPANET program, you would select EPANET 2.00.12 in the Engine Compatibility from the dropdown for the engine compatibility option. This will allow WaterGEMS or WaterCAD to solve the hydraulics with the same solver used in the EPANET 2.00.12 program itself. By default, the Engine Compatibility mode will be set to “WaterGEMS 2.00.12” for new projects, which contains the aforementioned improvements beyond the base EPANET 2.0.12 numerical solver. The details of these improvements are outlined in the Help Topic “Engine Compatibility Calculation Option” that comes with the WaterGEMS and WaterCAD software. When importing an EPANET INP file, however, the Engine Compatibility will be set to EPANET 2.012, for best compatibility. Also, note that when comparing a particular timestep during an EPS, results could be even more sensitive to the calculation option. For example, if you have an unstable valve or control arrangement, the small differences in the solvers might result in a control or valve status change happening at a slightly different timestep. So large result differences for a given timestep between the two solvers could simply be due to a small delay in element status change, such as a pump being on in one case and off in the other. The status may switch back in the very next timestep, so the overall big picture results may need to be considered instead of just a single timestep, especially in models with problematic or sensitive controls, pumps or valves. In short, if you’re looking to get results comparable to the EPANET program, be sure to set the Engine Compatibility mode to EPANET. Saying which results are more or less accurate is nearly impossible to determine. The solvers used are slightly different and those slight differences can cause slightly different results to occur as you've seen. The model is not going to give you perfectly matching results to what you're seeing in the field no matter what solver you use, but either solver should be within some acceptable margin of error that is accurate enough to use it for predictions of what will happen given a certain change or given condition in your system. The output is really only as good as the input though, so if you have bad data your results are going to reflect that. Also, keep in mind that all the solvers are based on mathematical algorithms that have long been used to solve network hydraulics, so they are probably all going to give similar results. The only way you can truly know the accuracy of your model is when you have it calibrated against your field data and measure the error of deviation based on that. It really comes down to, which solver that you're comfortable using or that your client would like to use, and that is why we offer both solvers with the WaterGEMS/WaterCAD/HAMMER software. See Also What are the limitations of importing/exporting an EPANET file? What are the difference between WaterGEMS/CAD and EPANET?
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Wiki Page: How do you create an IF / THEN / ELSE statements using Formula derived user data extensions?
Applies To Product(s): WaterGEMS, SewerGEMS, CivilStorm, StormCAD, PondPack, SewerCAD, HAMMER, WaterCAD Version(s): CONNECT Edition, V8i Area: Modeling Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How do you create an if...then...else conditional statement using the Real(formula) type for a user data extension? Problem ID#: 56090 Solution The conditional if statement that can be entered using the " iif " button in the formula query manager accepts information in the following format: iif({condition},{then-return-value}, {else-return-this-value}) When you click the iif button the statement format is preset for you so you only need to enter the arguments between the commas. An example of an iif statement is below: iif( [Physical_NodeElevation; Feet] > 800,1,0) After the model is run this statement will return 1 to the user data extension field created if the physical elevation of the junction elevation is greater than 800 ft., otherwise it will return 0. NOTE: - Avoid using the equals sign, as small variations can result in inequality, which you might not see in the program interface due to decision precision or in some cases unit conversion - data is always stored in US units and then converted back to the display units, which can introduce a small error. What if I want to return a non-numeric result such as True/False or text? Since the Real(formula) field is of type real, which is a numeric field, you can only return numbers to it. Some possible workarounds: Have the formula return certain number codes, like 1 or 0 for true and false, then set up queries based on that. For example one query might be called “Good condition” and the query could be = 1 Set up Color coding based on the number codes returned by the formula UDX If you really need to see non-numeric values in the properties, set up an Excel spreadsheet and use Modelbuilder to update. First, set up your spreadsheet in Excel with empty columns for the input fields (the fields in the model), and columns with the appropriate formulas to return the desired non-numeric result. Next, create regular User Data Extensions (such as text or boolean) to store the output result of your formulas. Next, set up a connection to the spreadsheet in Modelbuilder and map the input and output columns. In the last step, choose No when asked if you'd like to build the model. The connection will then be saved to the Modelbuilder manager. Once its saved to the Modelbuilder Manager, all you need to do is click the sync out button (to send the model data columns to the spreadsheet), open the file in Excel to refresh the functions (and output columns), save the file, then click the “build model” button in Modelbuilder to import the calculated data into the regular UDX fields in the model. When something changes, it’s only a few clicks to update. Related Enhancement # 188764 (Text based fields for formula UDX) See Also Query, alert or formula UDX not working correctly with "=" (equals) Can a user data extension with an IF, THEN, ELSE (iif) statement assign a value to another field? Creating Formula-Based User Data Extensions
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Forum Post: RE: How to sort the graphs in the new version of WaterGEMS 10.01.01.04 (30/4/2018)?
Hi Yashodhan, Thanks for your response. The version we are currently using is 10.00.00.55 (22/5/2017 build), in which all graphs can be sorted using the label. The new version we are testing is 10.01.01.04. It can create folders which is flexible. But it seems the sorting function is removed.
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Forum Post: Conduit Invert(start) & Invert(Stop) showing reverse compare to its flow direction
Split from : communities.bentley.com/.../conduit-invert-start-invert-stop-showing-reverse-compare-to-its-flow-direction Can Bentley add a new function in the FlexTable called " Reverse", so we can do right click on the flow's column and press reverse after filtering the negative values?
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Forum Post: RE: Conduit Invert(start) & Invert(Stop) showing reverse compare to its flow direction
Hello Mohammad, Do you wish to "reverse" the values after filtering out the negative values? This can be done in two steps; 1. Filter out the negative flow values by running a custom query using "Filter" (something like Flow > 0). This will return all the positive values. 2. Next using the "Sort" function you can sort ascending or descending. Is my understanding correct for your query? If not kindly elaborate what you wish to accomplish.
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Forum Post: RE: Conduit Invert(start) & Invert(Stop) showing reverse compare to its flow direction
Hello Mohamad, I see that you had replied to another post about negative slope, where user wanted to reverse start and stop nodes of pipes with negative slopes. At the moment which can be done through properties of pipe one by one or using Modelbuilder. When you say reverse function in flex table, do you mean that you want to reverse start and stop nodes or something else, please elaborate, so we can take action accordingly like enhancement in the product.
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Forum Post: StormCAD
Hello, I have two queries: 1) At a Manhole three incoming conduits are there and one conduit is leaving away from the same manhole to a outfall. Total discharge incoming from these three conduits is 3.98 m3/sec however the conduit leaving from manhole to the outfall shows only 1.89 m3/sec. What is the possible reason for not getting the discharge in outlet pipe nealy same as incoming viz. 3.98 m3/sec, also there is not much elevation difference and Dia. is also same. 2) When I am exporting Engg. profile to .dxf and opening the same in AutoCAD, then the values on X & Y axis is not same as that in StormCAD. I had also checked the scale and set both to 1:1 but not getting the same Engg. Profile. What is possible reason for this.
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