The intent of the sprinkler nodes is to meet the demand requested by the mechanical designer. So I have a minimum pressure of 60psi and the minimum flow rates above which are all 1500gpm for the sprinklers. Since I am only supplying that specific node with the requirements requested, I have not included an emitter coefficient. They are all currently at 0. Hopefully this answers your questions.
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Forum Post: RE: I am unable to achieve my sprinkler fire flow and I am not sure why.
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Forum Post: RE: I am unable to achieve my sprinkler fire flow and I am not sure why.
You will never get 1500 gpm out of a sprinkler (that's a hydrant demand) or a 2 in. 2500 ft pipe (that's 150 ft/s velocity). Usually the sprinkler demands are much less than 1500 gpm. I suggest you talk with an experience sprinkler designer.
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Forum Post: Vertical Bends In SUDA
I'm am trying to model vertical bends in SUDA but I have only seen a option to place horizontal bends. Is there a way to place a vertical bend at a certain location and have it show up in profile views? Right now our work around is to place a generic node at the location of where we need a bend and continue the network with another pipe. Thanks
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Wiki Page: Updating video drivers and troubleshooting video hardware issues
Product(s): WaterCAD, WaterGEMS, HAMMER, StormCAD, SewerCAD, SewerGEMS, CivilStorm, PondPack Version(s): 10.XX.XX.XX, 08.11.XX.XX Environment: N\A Area: General Problem In some cases you may experience an issue with your Haestad product that occurs regardless of the model file and is found to be related to video hardware. Symptoms including the drawing pane not rendering correctly or an error or crash occurring, where the details of the error mention key phrases such as "OpenGL", "CGLDevice", "render", "GraphicsLibrary", "GLDrawing". Example: "Feature not supported in current OpenGL version. Disable optimal image loading mode if enabled" Example: a grayed-out screen is seen as below, whenever you create a new model or open an existing model: Solution The solution in this case often involves settings or drivers related to your video hardware. Meaning, the hardware on your computer that the program uses to render the drawing pane (the model plan view, including background layers). This hardware can sometimes be a discrete, separate video "card" that is more powerful for rendering 2D and 3D, or it can be onboard video hardware such as Intel HD, which resides on the CPU itself. Updating Video Drivers To resolve such issues, the best first step is usually to update your video drivers. Drivers are what your Operating System uses to interface with the hardware. If there is an issue with the driver or a compatibility problem (particularly with OpenGL), an update can often resolve the issue. One way to help prove that the video driver is the problem is to reboot the computer in Safe Mode, which will use basic video drivers. If the problem does not occur in Safe Mode, you can be more confident that the issue is with the drivers. To check the video hardware model and driver, (Windows 7 +) right click in your desktop > Change Resolution > Advanced Settings. In the Adapter tab, you should see the video hardware model. Click Properties > Driver to check the driver date and version. To update, it is recommended that you browse to the manufacturer's website (likely either NVIDIA, AMD or Intel), find a Support or Drivers section, select the hardware model, then download and install the latest driver version. In some cases you may need to download a vendor-specific driver from the computer vendor website (such as HP or Lenovo). A reboot may be necessary after doing this. If the latest official driver does not help, you can consider looking for and installing a beta driver version, or even rolling back to an older version as a troubleshooting step. Checking Video Settings Another thing to check is the settings of your video hardware. These are highly dependent on the hardware but are usually located by right clicking on your desktop. For example you may see "NVIDIA Control Panel". Sometimes these can also be found in the System Tray in the lower right corner of your screen. Note that if you use both integrated video (such as "Intel HD") as well as a discrete video card, check your video card control panel software to ensure that your Bentley product is set to use the discrete video hardware and not the "integrated" hardware. In some cases your video hardware may still have problems rendering the drawing pane. In these cases, try toggling "Use accelerated Redraw" under Tools > Options. See Also Out of memory error when loading a background file "Object reference " error on opening or creating model related to video drivers
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Forum Post: Control Condition is undefined?
When attempting to run a base flow analysis in WaterCAD, I get message 41535, "Control condition is undefined." This is odd, since I haven't attempted to create any controls, but when I open the controls window there is a blank control there, "IF THEN ." The analysis won't run unless I delete this blank control, but when I do, I get a litany of errors, including 41891 "Pressures below the lowest physically possible..." 41355 "Disconnected demand nodes detected..." 40005 "Network unbalanced..." etc. I'm at a loss, because I've never attempted to add controls to this model, and was able to successfully run it previously. Any advice?
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Forum Post: RE: Temporary weir
Hello George, Assuming that you you want to use the weir only in the scenario with the smaller storm event, you can use scenario management to do this. You would have two physical alternatives, one for the smaller storm event and one for the larger. Once the appropriate physical alternatives are assigned to the scenarios, you can then set the weir in the scenario with the smaller storm event. Similarly, the larger storm scenario will not use the start control structure. Regards, Scott
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Forum Post: RE: Control Condition is undefined?
Hello John, If no elements have controls (such as a pump control where it turns off at a certain tank elevation), simply delete the control. This is likely added accidentally at some point. The other issues are not really related to this. It was just that you couldn't compute the model with the validation error you were getting related to the controls. The main issue is the message about disconnected demand nodes and the network unbalanced error. These will need to be resolved before you have valid results.They are also likely related. This link has information on the disconnected demand nodes issue. This message means that some condition in your model, such as a pump being off or a tank being empty, is making it so that the demands in part of your model cannot be satisfied. There should be user notifications that will help identify the cause of the issue. You could also highlight a time step in the Calculation Summary (accessed by going to File > Summary or Analysis > Summary) to see the messages that occur at that time step. By resolving this issue, you will likely help with the Network Unbalanced issue. While it may help with the negative pressure issue too, this link has more information on that. The "Pressures below the lowest physically possible..." message indicates that the pressures at some nodes are below the vapor pressure. Checking elevations and headlosses may help with the negative pressures occurring in the system. If that doesn't help, we will need to see a copy of the model files to look into this. You can use this information to send the model files. Regards, Scott
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Forum Post: RE: Temporary weir
Sorry I was not clear with the scenario I described. Often at the site the weir is not let down until the storm has already started, meaning that for the first part of the rain event there is an outlet weir, and at some point during the rain event the weir is lowered. The weir is not mechanized so during large rain events someone walks out there and manually lowers the weir once there is enough rain fall to justify it. We are interested in modeling how having the weir up for the first part of a large storm can cause pipe backups that lead to flooding. Is it possible to have the weir up for the first part of the storm, and then be lowered at some point during the simulation? George
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Forum Post: RE: Vertical Bends In SUDA
Hello Chase, That's correct - a change in slope is modeled by placing a generic node at the "bend" elevation. In the Haestad products (like StormCAD and CivilStorm), the Transition node element would be used, since it simulates an enclosed junction, rather than a vertical structure. See more: Cross section vs Transition for modeling slope or size change
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Wiki Page: Inserting an aerial image background layer in the correct location
Applies To Product(s): WaterGEMS, WaterCAD, HAMMER, StormCAD, SewerCAD, SewerGEMS, CivilStorm, PondPack Version(s): 08.11.XX.XX, 10.XX.XX.XX Area: Layout and Data Input Original Author: Jesse Dringoli, Bentley Technical Support Group Problem When inserting a raster image with spatial information (such as MrSid or .JPG/.JGW) as a background layer in the Standalone version, the spatial reference/coordinate system is not automatically detected and the image does not appear in the correct location with respect to the model elements and/or other backgrounds. How can I insert an aerial image as a background in the correct location? Solution Some image formats support associated world files , starting with the CONNECT Edition release of the Haestad products. When attaching a background image file that has an associated world file present, the image will now be spatially located automatically (ie. georeferenced). Currently the following file formats support an associated world file: bmp jpg jpeg jpe jfif tif tiff png gif The World file extension is based on the image's extension. One convention is to use the first and last letter of the image's extension and add a "w" (eg. .jpg>.jgw). Another convention is to append the image's extension with a "w" (eg. .jpg, .jpgw). When opening the file, the Image Properties dialog will automatically enter the coordinates from the World file in the editable (Drawing) fields. For a video demonstration of World file support, click here . Note also that, starting with the CONNECT Edition Update 1 release (10.01.00.XX), you can import aerial images and road maps automatically with the Bing Maps feature. See more about that here and a video here . For older versions, or if you do not have a world file for your image, you must manually enter the coordinates of the corners of the image to line it up correctly with the model, in the dialog that appears when inserting the background image. For example the below screenshots show how MicroStation can be used to find the coordinates of the corners of a JPG/JGW file, then entered in the Background Layer dialog. Poor or Blurry Image Quality If you insert an image and the quality is less than expected (blurry), try enabling the "use optimal image loading" box in the background layer properties. If you're unable to check this box, try updating your video drivers . See Also http://communities.bentley.com/products/hydraulics___hydrology/f/5925/t/95268 How to add background aerial and road map images to your model What file types are supported for background layers in the standalone platform?
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Forum Post: RE: Temporary weir
Hi George, If you're using the Explicit (SWMM) solver in SewerGEMS or CivilStorm, you can change the weir height via SWMM controls: Using SWMM Control Sets in SewerGEMS and CivilStorm Otherwise, you might be able to simulate the impact of the weir and its change in position via the "Time-Elevation curve" boundary type at the outfall.
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Forum Post: RE: Negative pressure at the Surge tower and Hydropneumatic Tank
Hello Doan, Apologies for the delay in response as it took some time to fully analyze this model. Here are my observations and comments: 1) The hydropneumatic tank (HT) becomes empty at about 5.9 seconds, which you can see by graphing the gas volume in the Transient Results Viewer. This happens because the tank is at a higher elevation than the surrounding elements, and so has a higher chance of becoming empty or experiencing negative pressure. Results are not valid in this condition and you will see a user notification indicating that a larger tank may be required. There are several other parameters that impact a HT's performance, though. 2) The gage pressure at the HT becomes negative, but the gas law calculations use absolute pressure, which is still positive (see extended node data tab of TRV, graph gas pressure at HT-2. Also see: Differences in hydropneumatic tank gas pressure results ) 3) The Surge Tank (ST) becomes empty as well, at about 7.7 seconds. An air pocket forms after this point, simulating air from the empty tank entering the pipeline. Like the HT, the ST is also at a higher elevation than the surrounding elements. 4) There is a large headloss through the opening and the pipe next to the ST, which you can view if you create a profile from a nearby pump, to the ST. This is from the reduction in diameter from 2000 mm to 600 mm. 5) The negative pressure at the surge tank occurs because the pressure at the pipe next to the tank drops to zero before the pressure inside does (due to the headloss from the orifice). You can view this by checking the differences between the "level" and "head" in the table at the bottom of the Transient Analysis Detailed Report. If you change the headloss coefficient of the ST to zero for example, this does not happen because the tank and pipe pressure reach zero at the same time, after which air inflow begins. The main point is that this happens due to the tank becoming empty and an air pocket forming, which you will want to avoid anyways. 6) Both the ST and the HT have the "treat as junction?" option set to false, and the adjacent pipe flow is positive. This means the initial conditions are not at rest because the tanks are still filling/emptying at the start of the simulation. Set this to "true" to model the tanks "floating" on the system HGL, where they are neither filling nor draining in the initial conditions. 7) With tanks for protection, it's a careful balance between volume of water in the tank to supply mass during a transient event to keep the water column moving, vs. restriction through the opening to prevent the tank from becoming empty. With the large flows going through these large pipes, it appears that it would take larger volume of storage to prevent them from becoming empty within the timeframe being analyzed. As an example, if you make the following changes, the tanks will not become empty and not drop below zero pressure, at least for about 45 seconds after the pump shutdown. HT-2: - Treat as junction: True - Volume (tank): 10 m^3 - Volume of gas (initial): 3 m^3 E-ST1: - Treat as junction: True - Diameter: 4 m - Diameter (orifice): 1 m PS-13 (pipe next to E-ST1): - Diameter: 1 m Without a downstream boundary, the tanks will eventually drain out though, as long as the pumps remain off. See more here: Negative pressures occur during a transient simulation no matter what protection is used You may want to consider how long the pumps will be off and what other options you have for surge protection strategies. For example you could try placing the tanks at different locations, or try adding other measures like a higher pump inertia/flywheel.
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Forum Post: RE: Huge Spike at Energy Grade Line
Hello Michelle, Thanks for uploading the model files, we are working on it. Will get back to you shortly.
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Forum Post: RE: Temporary weir
Hello George, Using Scenario Management as Scott suggest is a good way to test physical conditions as per your requirements. In the first scenario you can use the initial weir elevation (under normal flooding conditions). In the second scenario you can create a new physical alternative to modify the weir elevation for when your runoff increases. For the first scenario you can annotate / color code the manholes with the "Is Overflowing?" property to understand which of your manholes are overflowing. This will give you an idea how much of your network is backed up in the initial condition (prior to adjusting weir elevation) You can check the same again when the weir is manually adjusted. Hope this helps.
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Forum Post: Watergems series 6 download
Hi, can somebody give me a link where I can download Watergems series 6? Since that's the license that I have.Thanks
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Forum Post: RE: Watergems series 6 download
Hello Saide, You will not have access to download software from Bentley's website if you are a Non-SELECT user, i will contact you offline via service request and provide you the setup. Downloading Haestad / Hydraulics and Hydrology Software For that purpose please send me your contact and company details via private message, hover over my name here and click on send a private message.
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Wiki Page: Opening SewerGEMS model in SewerCAD, StormCAD, CivilStorm and vice-versa
Product(s): SewerGEMS, SewerCAD, StormCAD Version(s): CONNECT Edition, V8i Area: Data Input and Layout Problem Can I send my SewerGEMS Sanitary model to a SewerCAD user? Can I open a model originally created in SewerGEMS in SewerCAD, StormCAD or CivilStorm? Problem ID#: 36732 Solution Yes. A SewerGEMS Sanitary model is essentially a SewerCAD model. As long as the user has the latest version of SewerCAD, they should be able to open the model. For example, models saved in SewerGEMS Sanitary version 08.11.01.21 can be opened in SewerCAD 08.11.00.52. A SewerGEMS model can be opened in SewerCAD, StormCAD or CivilStorm as long as the versions are same as explained above. This is due to the fact that all the products use the same file formats to store models (i.e. .stsw and .sqlite). The converse for this is also true; a SewerCAD, StormCAD or a CivilStorm model can be opened in SewerGEMS. Note: SewerGEMS Sanitary version of SewerGEMS was separate till the SS2 version. Later on storm and sanitary of SewerGEMS are combined together into one version only. See Also Model backward / forward compatibility
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Forum Post: RE: Calculation with tidal effect
Hello Michael, [quote userid="390112" url="~/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/161749/calculation-with-tidal-effect/478293"]On your and my curves I see a negativ outflow. Is the reason the empty storm water network by t = 0? Do I have to define the water-level in the stormwater network for the calculation start?[/quote] What do you mean by negative outflow? Is the "Flow (Total Out)" field in the Outfall properties reporting negative outflow? It would be helpful if you shared a snapshot of what you are seeing. The flow in the storm-water conveyance system is generated from the runoff from your catchments.
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Forum Post: RE: Watergems series 6 download
Hello Saide, I confirmed that your company is having SELECT contract, so you can download WaterGEMS latest version as using link provided. I have sent you mail with information about who has rights to download WaterGEMS.
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Forum Post: RE: Negative sign right the numbers in results file (profile - data)
Thanks for your answer. I export the results from transient results viewer, and then data. The negative sign, as shown below, is at the right side for numbers. Also, when I copy and past these values to excel spreadsheets, the negative sign is shown in the right side of numbers. Kind Regards,
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