Applies To Product(s): Bentley WaterCAD, WaterGEMS Version(s): 08.11.04.58+ Environment: N/A Area: Modeling Subarea: Original Author: Jesse Dringoli, Bentley Technical Support Group Problem What are the assumptions behind the "Multiple Peak Demand Charge" feature? Why doesn't it appear to work in the Scenario Energy Cost tool? What do I need to enter for the peak demand charge and billing period in the Energy Pricing window if I'm using multiple peak demand charges table? Solution Multiple Peak Demand Charges are currently only supported with the Energy Management tool, not the Scenario Energy Cost tool. The Peak demand charge is typically only considered on a peak day and then is fixed for the rest of the period. The scenario energy cost tool is more oriented to the more typical day. The Energy Management tool also lets you specify which pumps are in a Power Meter, then the peak demand charge is applied on a per-power meter basis. If you're using Multiple Peak Demand Charges for energy management, the "Peak Demand Charge" and "Billing Period" in the Energy pricing manager under the "Include Peak Demand Charge?" check box are ignored. If you will also use the Scenario Energy Cost, you may still want to populate these two fields, as they are still used in the Scenario Energy Cost tool. When entering Clock Time in the multiple peak demand charge table, you can enter any contiguous time range. For example 10 PM to 2 AM or 2 AM to 1 PM, etc. Take care not enter overlapping time ranges (for example 10 PM to 2 AM and 1 AM to 6 AM). See Also Multiple Peak Demand Charge section of the Energy Cost Analysis Technote
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Wiki Page: Using multiple peak demand charges
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Wiki Page: Energy Cost Analysis in WaterGEMS V8i SELECTseries 4
Applies To Product(s): WaterGEMS, WaterCAD Version(s): V8i SelectSeries 4 or later Environment: N/A Area: N/A Subarea: N/A Original Author: Dan Iannicelli, Bentley Technical Support Group Overview This Technote will describe in detail the process for running an Energy Cost Analysis in WaterCAD v8i and WaterGEMS v8i (SELECTSeries 4). It is meant to provide a more detailed description of running the Energy Cost Analyses than the Help Documentation. Background There are two levels at which energy costs can be analyzed in WaterGEMS. The tool called "Scenario Energy Cost" calculates energy use and cost for a single scenario while "Energy Management" uses the results of multiple Energy Cost scenarios to determine energy costs at a higher level of aggregation to determine the energy cost for pump stations (not just pump-by-pump) for multiple scenarios that can occur over a billing period and determine economic costs such as net present worth of pumping energy. The Scenario Energy Cost analysis determines the energy cost by pump for all pumps selected by the user. Pricing for energy cost is set up in the Pricing button in energy costing. Price functions are assigned to individual pumps in energy costing. For users interested in a more complete energy analysis, running a single scenario may not be sufficient as block rate charges must be determined based on energy use over a complete billing cycle which may contain low, average and high water use periods which should be modeled as separate scenarios. In addition, the scenario corresponding to the setting of a peak demand charge is usually not an average day but some kind of peak condition that should be modeled in a separate scenario. In order to deal with the complexities of block rates, multiple scenarios, aggregation of pumps within a station, and performing present worth calculation, the user needs to use the Energy Management analysis. Such calculations are usually required because of complex tariffs for electric power. Because there may be other energy uses at the pump station besides pumping, the user can specify non-pumping energy costs to account four uses such as lighting, HVAC, control systems, chemical feed equipment, etc. These costs are added in on a Power Meter basis. There may also be charges on the power bill that are not associated with individual pumping operations such as taxes, discounts, lump sum surcharges, etc. These can be added in to the overall cost and are referred to as "other costs". The usual work flow for using the energy cost and energy management analyses may be followed as shown below: Develop EPS scenarios to be used in energy cost. Run scenarios. Start scenario energy cost analysis. Create price functions and optional carbon emission factors. Assign price functions to pumps. Run energy cost for each scenario of interest. If more thorough analysis is desired, close scenario energy cost analysis and start energy management. Create new energy management study. Identify which pump stations/pumps are associated with each power meter. Specify the mix of scenarios to be analyzed. Identify interest rate and number of periods if present worth calculations needed. Compute study. Review results and rerun or create new studies. In the next section we will go through a detailed step by step guide of how to use the Energy Management and Scenario Energy Cost tools. Scenario Energy Cost Analysis The Scenario Energy Cost tool can be opened by going to Analysis > Scenario Energy Cost, or by selecting the Scenario Energy Cost icon in the toolbar. This will open the Scenario Energy Cost manager as shown below. On the left side of the manager, it will display the current scenario. If you wish to analyze a different scenario, you can choose it from the Scenario pulldown. Note: The Scenario must be an EPS run. The right side of the manager is where you will set up the energy cost analysis. On the left side of the manager you will see some result fields and specific element options. You can specify which elements will be included in the analysis in the table located on the bottom left of the manager. After selecting the scenario you will be analyzing, you will need to set up the energy pricing. To do this, click in a cell in the Energy Pricing column and click the ellipsis ("...") button. This will open the Energy Pricing manager. There are four types of Energy Pricing. Time of Day Block Rate Block Rate based on Billing Demand Constant Each of these types of Energy Pricing will act differently when you run an Energy Analysis. The Time of Day Energy Pricing will calculate enerrgy cost comparing hours vs. $/kwh. Note: You can change the units for the energy pricing by right-clicking on the current units and choose "Units and Formatting." This allows you to change the units and the precision that the data is displayed. Time of Day The Time of Day Energy Pricing will calculate energy cost comparing hours vs. $/kwh. Energy Supply Rate structure based on a Time of Day Pattern. To create a new Time of Day Energy Pricing definition, click the New icon in the upper left. On the right side of the manager is where the data is entered. The energy pricing data itself is entered in the lower right of the dialog. First, change the Tariff Type to Time of Day. Then enter the “Starting Energy Price.” If the pricing changes over the course of the EPS run, you can enter that data in the table below "Starting Energy Price." If the pricing will include Peak Demand Charge, you must place a checkmark in the box beside “Include Peak Demand Charges?” When this is done, the two fields used with this will become available. Enter the value for Peak Demand Charge and Billing Period. The Billing Period is used to convert the peak demand charge, which may be calculated for the month, year, or another period of time, into a daily cost which can be added to the energy cost to obtain the Daily Cost. Block Rate Block Rate Energy Pricing will calculate energy cost based on a Block Rate Cost Structure. A Block Rate is a certain price charged for the first definite number of units used and a successively lower or higher price for each additional block used. Block rate charges must be determined based on energy use over a complete billing cycle which may contain low, average and high water use periods which should be modeled as separate scenarios. Note: Block Rate cannot work during Energy Scenario Cost Analysis because it must be determined based on Energy use for a complete billing cycle. Block Rate Energy Prices can only be calculated using the Energy Management tool. Block Rate Energy Pricing will compare Energy Use (kWh) vs. Energy Price ($/kWh) Block Rate based on Billing Demand Block Rate Energy Pricing will calculate energy cost based on a Block Rate Cost Structure. A Block Rate is a certain price charged for the first definite number of units used and a successively lower or higher price for each additional block used. Block Rate Energy Pricing will compare Energy Use per Billing Demand (kWh) vs. Energy Price ($/kWh) Note: Block Rate Energy Prices can only be calculated using the Energy Management tool. Constant Constant Energy Pricing will use a constant Energy Price ($/kWh) for the entire model simulation. If the pricing will include Peak Demand Charge, you must place a checkmark in the box beside “Include Peak Demand Charges?” When this is done, the two fields used with this will become available. Enter the value for Peak Demand Charge and Billing Period. The Billing Period is used to convert the peak demand charge, which may be calculated for the month, year, or another period of time, into a daily cost which can be added to the energy cost to obtain the Daily Cost. Click "Close" to return to the Scenario Energy Costs manager. When you click a cell in the Energy Price column, the energy price definition that was created will be available for selection. Once the energy pricing and the elements to be used in the analysis are selected, the analysis can be run. Note: You must compute the scenario before you can calculate the energy cost. Click the Compute icon in the upper left of the Energy Cost manager. Once completed, the pumps for which the calculation was run will appear in the window on the left side of the dialog. To view the results for an individual pump, select one of them from the window on the left. A Results table will appear on the right side of the manager. You can also view the available results fields as a graph by selecting the Graph tab. To select which result field to view, click the pulldown and select the field. Note: to see general results for all pumps, you can select the item “Pump Usage” in the window on the left; a new table will appear on the right side of the dialog. Multiple Peak Charges in Energy Management Starting with WaterGEMS and WaterCAD build 08.11.04.58 and higher, an additional enhancement has been added to energy aggregation. It is now possible to manage tariffs with multiple peak charges. This enhancement has been added to the Energy Cost dialog as shown below: After placing a checkmark in the box, the user can now edit the mulitple peak changes. The Peak Charge Type can either be based on Clock Time or Simulation Time. The user will include the start and end times for the peak charge and enter the value for the peak demand change. With this data entered, multiple peak charges can now be taken into account when running the Scenario Energy Cost simulation. For information and assumptions on multiple peak charges, see the below Support Solution: Using Multiple Peak Demand Charges Energy Management The Scenario Energy Cost Manager is ideal for comparing different scenarios based on energy cost. However, if you would like to do more thorough analysis of Block Rates, Multiple Scenarios, or would like to consider all Energy Use you should open Energy Management tool. The Energy Management tool will allow you to use Block Rates and compare Multiple Scenarios using a single tool. You will also be able to add other Energy Costs that are not associated with WaterGEMS(CAD) elements such as Lighting, HVAC, Taxes, etc. Below is a list of the main differences between running the Scenario Energy Cost vs. Energy Management: Scenario Energy Costs Energy Management Detailed Energy Use Results Summary of Energy Costs Single Scenario One or More Scenarios Cost by Individual Elements and System Wide Cost by Individual Elements, Power Meter, Scenario and Systemwide Pumps and VSPB’s and Tanks Pump Stations, Pumps, and VSPB’s Cost based on Unit Energy cost or Time of Day and Peak Demand charge Cost based on all types of Energy Tariffs including Block Rates and all those from Sceanrio Energy Cost Considers Pump Energy and Demand Considers All Energy Use Considers only Energy Costs Considers Pump, Non-Pump and Extraneous costs To begin an Energy Management Study click on the Energy Management icon or go to Analysis > Energy Management. Once you open the Energy Management dialog you will see the following window appear. Click the New button in the top Left Corner to create a New Energy Management study. Once you create a New Energy Management Study you will see multiple Tabs to enter data. The first Data Tab is the Options tab. Here you are able to set the Billing Period, Calculate Net Present Value, and Scenario Data. The most useful part of using the Energy Management tool is the ability to compare scenarios in the same study. As shown below you can add and compare Scenarios based on Percentage of Billing Period. The model uses the Billing Period value entered to calculate the Total cost of the study. Billing Period - Enter the total Billing Period for the Energy Study. EX. (730 days - 2 years) Calculate Net Present Value - Check to calculate the Net Present Value using the Interest Rate and Number of Years variables. Scenarios Table - Add all of the scenarios you would like to compare in a single Energy Management Study. In this example, Average Day and Peak Day scenarios are included. Include in Cost Calculation - Check Box to include or exclude the Scenario from the Management Study. Percent of Billing Period - Percentage of Billing Period entered above to use the specified scenario for the Energy Management Calculation. Compute Scenario and Energy - Dropdown where you can select whether to recompute the Hydraulic model Data as well as recompute the Scenario Energy Cost. (Note: Leaving this as "None" will save Calculation Time.) Use for Peak - Check Box to use the specified Scenario for Peak Demand Charge. Power Meters An important concept in energy management analysis is that of a "Power meter". A Power Meter is the basic unit that is billed by an electric utility. A Power Meter usually corresponds to a pump station. However, in WaterGEMS, a pump station is a collection of pumps serving a single pressure zone. Therefore, if a pump station building has a single electric service but has a set of Low, Medium and High service pumps, for WaterGEMS hydraulic calculations, it is three Pump Station elements but for energy management, it corresponds to a single Power Meter. The figure below shows how a single power meter can include multiple pumps and pump stations in a single building. Power meters are used during Energy Management. To enter data for a Power meter click on the Power meter Icon on the main toolbar inside the Energy Management dialog box. The Power Meter Dialog box looks like the following. There are Tabs to enter Pump Data, Non-Pumping Energy, and Notes. To create a New Power Meter click on the New button in the top left corner of the Power Meter window. Pumps Tab - Enter the Pumps corresponding to the specified Power Meter. Non-Pumping Energy - Enter other cost data associated with the Power Meter such as HVAC, Lighting, Control Panels, Security Systems, Temperature Control Systems, or any other Extraneous data. Notes - Enter any Notes or Instructions associated with this specified Power Meter. Once all the Power Meter data is complete you can exit the Power Meter Dialog. In the Power Meter tab, enter the applicable Energy Pricing for the Various Power Meters. Once all of the data for the Energy Management tabs has been entered you are ready to calculate the Energy Management. Click on the Calculate button on the Taskbar. Once the Calculation process is complete you will get numerous detailed results. The Results Summary section will give you detailed results about the Energy Management study. In the Results Summary you can compare results based on the entire billing period. An example is shown below: Carbon Emission Analysis Carbon Emission calculation is also included with Energy Cost analysis. You can choose the pumps to be included for analysis at the same time as you select which pumps to include with the energy cost analysis. In order for the carbon emission analysis, you need to enter a Carbon Dioxide Emission Factor to complete the analysis. To do this, click in a cell under the column header Unit Carbon Emission. This will open the Unit Carbon Emission dialog. Create a new definition by select the New icon, then enter your value for the carbon dioxide emission factor. Click “Close” to return to the Energy Cost dialog and choose the new unit carbon emission definition from the pulldown menu. When you select the Compute icon in the upper right, it will now calculate the carbon emissions from the pump. To view the results, select “Pump Usage” directly under the scenario name in the window on the left. In the table, scroll all the way to the left. The Carbon Emission results field will be the last column. See Also Product TechNotes and FAQs Haestad Methods Product Tech Notes And FAQs External Links Water and Wastewater Forum Bentley Technical Support KnowledgeBase Bentley LEARN Server Comments or Corrections? Bentley's Technical Support Group requests that you please confine any comments you have on this Wiki entry to this "Comments or Corrections?" section. THANK YOU!
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Forum Post: RE: FLOW GOING OUT OF A TANK EXCEEDS THE LOGICAL FLOW
HI JESSE I HAVN'T BEEN ABLE TO COPE WITH THE PROBLEM AT ALL, I INCREASED THE VOLUME OF THE TANK BECAUSE I CAN'T CHANGE THE DEMANDS AT THE NODES AS YOU SUGGESTED (I UNDESTOOD WHAT YOU TOLD ME), AND NOW I DON'T HAVE ANY PROBLEMS DURING THE SIMULATION (I DONT GET ANY WARNING MESSAGES) THE SYSTEM LOOKS FINE, THE FLOW TROUGH THE PIPES SEEMS LOGICAL, BUT WHAT IT DOESN'T, IS THAT WHEN I RUN THE TIME BROWSER SIMULATION FOR THE PUMP OR TANK TO FILL THE TANK DURING EPS, THE GRAPH SHOWS THAT THE PUMP FILLS THE TANK INSTANTLY (LETS SAY IN 10 MIN WITH A 32LPS FLOW PUMP) THIS ISN'T REPRESENTATIVE FOR THE REAL AND LOGICAL CONDITIONS, I THINK THE PUMP SHOUL BE PUMPING FOR MAYBE 2 HOURS EVERY 4-6 HOURS IN INTERVALS. HOW CAN I MAKE THE PUMP TO SIMULATE THIS REAL CONDITIONS? I HAVN'T BEEN ABLE TO READ A SOLUTION NEITHER IN THE FORUMS OR THE BENTLEY LINKS. THANKS ALOT FOR ALL YOUR SUPPORT
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Forum Post: RE: FLOW GOING OUT OF A TANK EXCEEDS THE LOGICAL FLOW
Carlos, Please check the answer provided by Sushma Choure in the below separate thread: http://communities.bentley.com/products/hydraulics___hydrology/f/5925/t/103827 If this does not help, please upload the most recent copy of your model and specify the steps to observe the problem (including the scenario in question and element labels). If this is a new issue unrelated to the other ones, it would be best to start a new thread.
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Forum Post: RE: FLOW GOING OUT OF A TANK EXCEEDS THE LOGICAL FLOW
THANKS, LET ME CHECK IT OUT
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Wiki Page: How can I use the customer meter element demands with Darwin Calibrator?
Applies To Product(s): Bentley WaterGEMs, Bentley WaterCAD, Bentley HAMMER Version(s): 08.11.05.61 Environment: N/A Area: Modeling Subarea: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description How can I use the customer meter element demands with Darwin Calibrator? Or How can I take demand data from customer meter elements and enter it quickly into my other node elements, such as junctions, hydrants, or tanks? Steps to Resolve With the initial release of SELECTseries 5, Darwin Calibrator and Darwin Designer only considered demands that were placed on a junction, hydrant, or tank elements. An update was made available after release, to support the use of the Customer Meter element with Calibrator and Designer. Without this patch, demands from customer meters will not be considered in Calibrator or Designer. This update will be available in the next release and in SELECTseries 5 cumulative patch sets dated after December 2014. For information on downloading cumulative patch sets, please see the below article. If further assistance is needed, please contact technical support or post to the Hydraulics and Hydrology forum. How do I download WaterGEMS, WaterCAD, HAMMER, SewerGEMS, SewerCAD, CivilStorm, StormCAD, PondPack, FlowMaster, CulvertMaster Alternative Updating your version/patch is the ideal solution, but if you would like to convert your customer meter demands to junctions, consider the below steps: 1) Download the attached Excel spreadsheet https://bentley.sharefile.com/d/sc3b67ab5c9948139 2) Open it and become familiar with it 3) Open Modelbuilder (Tools > Modelbuilder) and on step 1 choose Excel 2013/2010/2007 (12.0) as the data source type then click the next button. 4) On step two set accept the defaults because this information will not matter for what we are doing. Do the same thing for steps 3 and 4. 5) The field matching you do for step 5 will depend on what information you have entered in your customer meter element. In the screen shot below the example shows how you would go about doing the field matching for most properties of the customer meter element. If you only need to export certain information like customer meter Label and Demand (Base) you don't need to field map all the other columns. 6) On step 6 when asked if you "Would like to build a model now?" choose 'No' and hit the Finish button. 7) On the main Modelbuilder manager make sure the new sheet you created is highlighted in blue by single clicking on it and then hit the "Sync Out Button", which is the button to the left of the question mark icon (Help Button). This will export all your customer meter information to your spreadsheet. 8) Now double click on the Modelbuilder run you created to reopen the Modelbuilder Wizard. Follow the directions in this wiki that explains how to import demands from a spreadsheet to you node elements. https://communities.bentley.com/Products/Hydraulics___Hydrology/w/Hydraulics_and_Hydrology__Wiki/importing-demands-from-a-spreadsheet
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Wiki Page: When opening PondPack a System.NullReferenceException: "Object reference not set to an instance of an object." and the software closes
Applies To Product(s): Bentley PondPack Version(s): 10.00.XX.XX Environment: N/A Area: Other Subarea: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description When opening the software you get an error message that says "System.NullReferenceException: "Object reference not set to an instance of an object." and the software closes. Reason The library.config file becomes corrupt Steps to Resolve Delete the library.config files Make sure the software is closed and browse to "C:\Documents and Settings\(user name)\Application Data\Bentley\EngineeringLibraries\" (for Windows XP) or "C:\Users\(user name)\AppData\Roaming\Bentley\EngineeringLibraries" (for Windows 7). Locate the "libraries.config" and "libraries.config.bak" file and delete them Reopen the software
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Wiki Page: How can I update my GIS-ID's?
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: Layout and Data Input Subarea: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description How can I update my GIS-ID's in my model with prefixes or change the GIS-ID completely? Steps to Accomplish 1) Create an excel spread sheet with a column titled "Label" and another column titled "GIS-ID" 2) With your model file open go to Tools > Modelbuilder and create a new Modelbuilder run by clicking the icon that looks like a white sheet of paper 3) For the datasource type on step one of Modelbuilder select "Excel 2013/2010/2007 (12.0)" and choose the spread sheet location you created in step 1 above 4) Click next until you get to step 5 of modlebuilder, which is the field mapping step. Set the table type to " , GIS-IDs" and the 'Key Fields' to "Label". For example, if you were exporting your Pipe GIS-IDs your table type would be "PIpe, GIS-IDs" and If you were doing it for junctions the table type would be "Junction, GIS-IDs". In the lower part of this dialog box match the GIS-ID field from your excel spreadsheet to the GIS-ID property. Please see the screen shot below for this setup. 5) Proceed to the last screen of Modelbuilder by hitting the "Next button" and for the question that asks "Do if you want to build a model now?" choose "No" and click the "Finish" button. 6) On the Modelbuilder manager window click the sync out button (see screen shot below) to export the GIS-IDs from your model to your spreadsheet. 7) Open the spreadsheet and adjust the GIS-ID's appropriately then save and close it. 8) Open the modelbuilder window and click the "Build model" button
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Forum Post: Hammer - Inconsistent model data
I have found contradictions in the model results and also had some complications with active topology as described below. Issue #1: Negative Pressures shown in Transient Results Viewer Profiles, but not in Time Series In scenario 6-A-2 a main pipeline rupture is modeled. When viewing results negative pressures are observed in the pressure profile and at the node data properties, however this negative pressure is not displayed on the time series. Issue #2: Inactive Elements are Computing as Active Elements Pipes and nodes set to active topology in the properties table are displayed as inactive and are grayed out in the model. Conversely, pipes and nodes set to inactive have flows and are displayed as black elements in the model.
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Forum Post: RE: Hammer - Inconsistent model data
Hello Venessa, It may be useful to see a copy of the model to look into this. There are two options for sharing your model files on BE 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. http://communities.bentley.com/content/bentleysecurefilesupload.aspx If you upload the model to Sharefile, please post here so that we know that it is available. For the inactive elements issue, you may want to check the colors set being used for the model. If you are using HAMMER standalone, go to Tools > Options. In the Global tab, you can define the colors displayed in the drawing. Make sure the colors are as you expect them. Regards, Scott
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Wiki Page: How to view Force Calculation results in HAMMER
Applies To Product(s): Bentley HAMMER Version(s): 08.11.xx.xx Environment: N/A Area: Output and Reporting Subarea: Original Author: Scott Kampa, Bentley Technical Support Group Problem Description Is there way to view force calculation results in HAMMER? Steps to Accomplish By default, HAMMER does not calculate force results, but you can set up the model to run these calculations. To do this, go to Analysis > Calculation Options and double-click the active Transient Calculation Option to view the properties. In the properties, find the attribute "Calculation Transient Force?" and set this to True. Once this is done, compute the model. There a couple of different ways to view the results. First, under the Time Histories tab of the Transient Results Viewer, you can choose "Force X", "Force Y", "Force Z" "Force Magnitude", or "Force X, Y, Z and Magnitude" as the "Graph type". Select the end point where you would like to see the force results, then click "Plot". *For more information on how the forces are calculated please see this wiki technote . In addition, you can see the magnitude of the force, as well as the force in the x, y, and z directions at each node in the model by viewing the Transient Output Log (Report > Transient Analysis Reports > Transient Analysis Output Log). Search for the section "Maximum Forces at Every Node" for the data. This will list the maximum force for each node and the time that the maximum force occurred. Background Information on Force Calcultion To understand the meaning of the X/Y/Z force values (fx, fy, fz), think of the model plan view, or the top-down view. Think of the node in question as the 0,0 origin of a standard graph, with the X axis extending to the right and the Y axis extending up. The "X" force would be the force exerted from left to right. So, a negative value would mean a force exerted towards the left of the node. The "Y" force would be the force from down to up. So, a negative value for Y would mean a force exerted down. The Z force would be the force in the Z direction - perpendicular to the plane of the graph. So, a negative Z force would mean a force exerted toward the ground. These X/Y/Z values are useful when determining required bracings (thrust blocks, restraints, etc) since it gives you the force for the important 3 directions, when the total (resultant) was at it's maximum. Note: - There are two components of force at a pipe end section (pipe end point at a node): Longitudinal force and Transverse force. These two forces affect the total component forces in X, Y and Z direction. - Longitudinal force at a pipe end section is affected by the pipe cross-section area, velocity, and pressure. - Transverse force is affected by the direction of the pipe and the weight of the fluid in the pipe. - Pipe direction is affected by the pipe start and stop node coordinates (X, Y, and the elevation Z). For this reason, force calculations will work best with a scaled model. If the model is not scaled, you should be mindful of the coordinates, as a shift in the coordinates can impact the force calculations. For instance, if you manually lay out a system that is meant to have no gradient in the Y direction (i.e., a horizontal line), if there the line is not exactly horizontal, it will make the results different compared to a horizontal layout. - The weight of fluid is affected by the pipe length and pipe cross-section area. - Pipe length can be the user-defined length or scaled length. You will want to make sure the data is accurate, as length can be important in force calculations. For a vertical pipe, the start and stop node can have the same X-Y coordinates (or close to overlapping). The user only needs to get correct pipe length and node elevations to see accurate results, though the plan view appearance of the model may not be ideal. Note: HAMMER models can be exported to an i-model (File > Export > Publish i-model). This file can then be opened in MicroStation to see a 3-D representation of the system, along with results that are available in the Properties dialog. Starting with HAMMER V8i SELECTseries 5, the user can also export to a Map Mobile i-model to view the system on handheld devices or tablets. - In determining the pipe direction, only pipe start and stop node coordinates (X, Y and elevation Z) are used. The bending points in the drawing of a pipe are ignored. You will need to place junctions (or another node element) at the vertex. Additional explanation of force calculations in HAMMER is found in the Help documentation under Contents > Modeling Capabilities > Hydraulic Transient Pressure Analysis > Analysis of Transient Forces and also under Contents > Bentley HAMMER V8i Theory and Practice > Transient Forces.
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Forum Post: Disconnected Demand Nodes Detected Error - WaterCAD V8i
Hello, I am modeling a system that provides flows to a rural hospital. When I run the model using max day demands(1.5x average), all seems to be well. When I take the model down to average day demands, in the notifications tab I am greeted by the DISCONNECTED DEMAND NODES error at hour 0.00. The other messages show up as normal tank full messages. There is no indication of any demands not being met at all. I also tried color coding junctions to "Has status message" and absolutely nothing. I almost don't want to believe the error because I have tripe checked my network and everything seems to be fine. Any advice on this type of error popping up seemingly without reason? Am I just missing something that should be obvious? It just doesn't make sense that the max demands would work fine and then the average just produces such an error. Thank you for your help
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Forum Post: RE: Disconnected Demand Nodes Detected Error - WaterCAD V8i
Hi evstangelo, Please read the wiki help topic found at the link below and let us know if that helps: https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/10506.disconnected-demand-nodes-user-notification-when-computing-model Regards, Mark
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Forum Post: How to use Darwin Scheduler to optimise system for optimal tank level and pumping combinations, at specific flow rates
Hi I am trying to use Darwin Scheduler to optimise a system for optimal tank level and pumping combinations at a few specified flow rates. The system consists of a source collector tank, nine pumps in parallel (4 larger ones, 5 smaller ones), and a reservoir, i.e., the water is pumped from the source collector tank to the reservoir. I am wondering what is the best practice workflow/method to find the optimal level the tank should maintain, and the best pumping combinations, given a range of different flow rates.
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Forum Post: Water Hammer warning message
Dear Bentley: I am doing hammer analysis for sanitary forcemain and I sugessted hydropneumatic tank for protection, but I got the following warning message 48117 "With Surge Protection" "Hydropneumatic Tank" "263" "HT-1" 0.000 "The maximum and minimum pressure of gas is (0.36E+02 m H2O) and (0.15E+02 m H2O), the maximum and minimum volume of gas are (0.61E+02 m³) and (0.30E+02 m³)." Transient Engine. so kindly what is the hydrulic benfit of this message or how can read this message for hyadulic point of view? my second question How can i plot curve to show the ratio of Gas and water inside the hydropnematic tank along with time, or if there is anaimation to show it. Regards Eng. Sayed Elhagar
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Wiki Page: Haestad Methods program will not integrate with AutoCAD
Applies To Product(s): Bentley WaterGEMS, Bentley WaterCAD, Bentley SewerGEMS, Bentley SewerCAD, Bentley CivilStorm, Bentley StormCAD, Bentley HAMMER Version(s): 08.11.xx.xx Environment: N/A Area: Installation Subarea: Original Author: Scott Kampa, Bentley Technical Support Group Problem Description After installation, the Haestad Methods program will not integrate with AutoCAD. Steps to Resolve When your Haestad product is installed, it will attempt to integrate with a compatible version of AutoCAD, and you will find shortcuts to both the Standalone version as well as AutoCAD (and potentially MicroStation or ArcGIS, depending on the product). There is not a separate installation file for the AutoCAD version of the Haestad product. If you do not see the " " for AutoCAD " shortcut on your desktop or in your start menu folder, there are a couple of possible reasons for this. Option 1 You will need to make sure that the program is compatible with a given version of AutoCAD. For instance, build 08.11.05.61 of WaterGEMS, WaterCAD, and HAMMER; and build 08.11.04.054 of SewerGEMS, CivilStorm, SewerCAD, and StormCAD will only integrate with AutoCAD 2015 and AutoCAD 2014. Early versions of AutoCAD are not supported. For more information on AutoCAD version compatibility, see the Readme.PDF file, found in the program's installation folder, or the following support solution article: Option 2 You may need to run the integration tool. This can be necessary if the Haestad Methods program was installed before AutoCAD. To run the integration tool, go to Start > All Programs > Bentley > (program name) > Integration (program name) with AutoCAD. You can also try running a Repair on the program through the Control Panel. This will also rerun the integration tool. Be aware that you also need full administration rights in order to install the programs, including the integration tool. Note: You may also need an license to use the program in the AutoCAD environment. Please check the License Management Tool for available features on the product license. Option 3 This could also be related to the setup of your workstation. For instance, if you have a 64-bit workstation running the 32-bit version of Microsoft Office, the SELECTseries 3 versions of our software will install as 32-bit applications. However, AutoCAD will be installed as a 64-bit application. Because of this, the integration cannot go through. You can upgrade to the SELECTseries 4 (or later) versions of the software. (Note: as of November 2013, the SELECTSeries 4 version of our storm and sewer products is not yet available - subscribe to our H&H blog or check the latest available version on our download site). The new database format used with SELECTseries 4 and later will allow the program to be installed as a 64-bit application regardless of the version of Microsoft Office. If you cannot upgrade, some other possible workarounds: 1) Uninstall 32-bit Office and reinstall the Haestad product. 2) Upgrade to 64-bit Office and reinstall the Haestad product. 3) Install the 64-bit version on a Virtual Machine (such as Windows 7's "XP Mode") 4) Try uninstalling Microsoft Office completely (including the 32-bit Access DB engine), then reinstall the Haestad product, then reinstall Office. The conflict happens when the 64-bit MS Access database engine is installed second, so this may work. IMPORTANT: this workaround is not tested so we cannot guarantee it will work.
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Wiki Page: How do I append a prefix to element labels based on a selection set of elements?
Applies To Product(s): Bentley WaterGEMS, WaterCAD, HAMMER, StormCAD, SewerCAD, SewerGEMS, CivilStorm Version(s): 08.11.XX.XX Environment: N/A Area: Output and Reporting Subarea: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How do I append a prefix to element labels based on a selection set of elements? Steps to Accomplish StormCAD, SewerCAD, SewerGEMS or CivilStorm Select all the elements you want in your selection set on the drawing pane while holding down the control button or by using the following options found in this wiki technote With the elements in your selection set highlighted in the drawing go to View > Flextables and right click on the flextable that you are going to open the selection based on then choose "Open on Selection" Right click on the Label field in the flextable and choose the "Relabel" option 4. Change the 'Relabel Operation' to "Append" and enter either the prefix or a suffix to be appended. Click "Ok" when you are done. 5. Repeat these steps for each group of elements you need to append a label to See Also Sorting and relabeling a flextable based on upstream-downstream order
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Wiki Page: Error 2738 when installing software
Applies To Product(s): Bentley WaterGEMS, WaterCAD, HAMMER, SewerCAD, SewerGEMS, StormCAD, CivilStorm, PondPack Version(s): 08.11.xx.xx Environment: N\A Area: Installation Subarea: N\A Original Author: Scott Kampa, Bentley Technical Support Group Problem Error 2738 is generated when trying to install the water or storm/sewer products. Solution Try temporarily disabling your antivirus or antimalware software. If you cannot do this, speak with your IT group to see if they can assist with the installation of the product. If the software still cannot be installed, please contact Bentley Technical Support
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Wiki Page: How can I force a license activation on a PC that is having trouble pulling the license information?
Applies To Product(s): Bentley WaterGEMS, WaterCAD, HAMMER, StormCAD, SewerCAD, SewerGEMS, CivilStorm Version(s): 08.11.04.58 + Environment: N/A Area: Output and Reporting Subarea: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem How can I force a license activation on a PC that is having trouble pulling the license information? Steps to Accomplish 1) Open the license management tool (Start > All Programs > Bentley > Application Name > license management tool) and go through the activation steps to make sure the product is activated (Tools > Product activation Wizard) 2) Open the 32 bit application by browsing to "C:\Program Files (x86)\Bentley\ " and clicking on the executable file there, which should be titled .exe (e.g. WaterGEMS.exe, SewerCAD.exe) 3) Open the 64 bit version of the application, which can be accessed by clicking on the icon on your desktop or by browsing to "C:\Program Files (x86)\Bentley\ \x64" and clicking on the executable file there, which should be titled .exe (e.g. WaterGEMS.exe, SewerCAD.exe). Now check the help information to see if the registration took by going to Help > About (e.g. About WaterGEMS, About SewerCAD) 4) Open the 32 bit application again and check to see if the licensing information took by looking in the Help > About window.
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Wiki Page: In WaterGEMS for Microstation when I use the Save Symbology option the flow arrows are not saved in an exported DGN
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: Output and Reporting Subarea: Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description In WaterGEMS for Microstation when I use the Save Symbology option and then export the drawing to a .dwg/.dgn/.dxf file the flow arrows are not saved. Why is that? Solution The save symbology function only works to update the Microstation symbology such as color, line weight, and size. The flow arrows are decorations, which are not saved using this symbology function. The reason for that is because the Haestad handler draws the decorations at draw time, therefore, unless the user user if running a Haestad product they can't see it.
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