It would also be helpful to explain which specific result field(s) are showing "N/A" (or all of them?) There are some results that are applicable to other solvers but not SWMM, though the core results like flow, hydraulic grade, etc should show.
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Forum Post: RE: Explicit (SWMM) N/A results
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Wiki Page: Flushing in WaterGEMS/CAD Select Series 4 +
Applies To Product(s): Bentley WaterGEMS/WaterCAD Version(s): V8i SELECTseries 4 (08.11.04.50) Environment: N/A Area: Other Subarea: N/A Original Author: Terry Foster, Bentley Technical Support Group Overview The Flushing tool has greatly been improved. The new flushing module is easy to setup, easy to run (you can run a selected event or all events), and easy to generate printer ready reports. Both conventional and unidirectional flushing can be arranged under certain area or study. In earlier builds of WaterGEMS/CAD, flushing was controlled in the flushing alternative. Flushing is now under the Analysis menu (Analysis > Flushing Manager). If a user opens a project created in an earlier build, the data in the flushing alternative will be transferred to the flushing manager. There has been a new criteria added "Target Shear Stress" along with the Target Velocity. This field can be used as a requirement to test the flushing event run. Reasons to Flush Operating hydrant to assure that the hydrant will operate properly when called on in an emergency Removing stale water Increasing disinfectant residual Removing dissolved material Removing settled solids Removing attached solids Removing bio-films Removing contaminants after a contamination event Categories Movement of dissolved matter (includes disinfectant and taste and odor) - Velocity and shear stress are inconsequential. Removal of settled and loosely attached material (includes color and turbidity) - Very small increases in shear stress are all that is required. Removal of attached material (includes bio-films and attached solids) - More substantial threshold shear stress must be met. Work Flow for Modeling Flushing Start with a calibrated model Start Flushing Manager Create Study Create Area/Set up Options Create Events Compute Study Area or Event Create Area/Set up Options To perform an analysis of a set of flushing events (i.e. a flushing area), the user must creat flushing events. Upon opening the flushing manager initially, there will be a default study, "Flushing Study" which will have one area called "Base Flushing" in the left pane. The user creates new studies or areas by right-clicking on the study node in the left pane. By right-clicking on the area a new event can be created. Identifying the Buttons Left to Right New : creates new study, area or event depending on which node is highlighted Delete : deletes the highlighted study, area or event Rename : to edit the name of the highlighted study, area or event Compute : starts analysis of highlighted study or area Flushing Browser : opens the flushing results browser Report : opens up a preview of the operator report Move Up : moves selected area or event up the list Move Down : moves selected area or event down the list Zoom : zooms to extent of selected study, area or event Highlight : highlights elements in selected study, area or event Expand/Collapse : expands or collapses selected node Options : enables user to set default colors and extent of view in conventional flushing Help : opens flushing help Within a flushing area, the user defines the representative scenario, target velocity and shear stress, pipe set, method to determine flow (emitter or flow) and auxiliary output if desired. It is a good idea to create a selection set corresponding to the pipe set before entering the flushing manager. Representative Scenario : This establishes the boundary conditions (tank levels, pump status, demands) for the area. Output Scenario: This is created automatically the first time the area is computed. Target Velocity: The velocity that should be exceeded for the flushing to be considered successful for that pipe. Target Shear Stress: The user may specify a Target Shear Stress or a Tar Velocity, or in addition to a Target Velocity. Both defaults are zero. Pipe Set: By clicking on the ellipsis button the user can select the pipes or a selection set. Nodes of Interest: Auxiliary results are saved to these. They are usful for monitoring low pressure during flushing. This is an optional field. Flushing Flows: The user can specify either emitter coefficient for the hydrant or junction being flowed or the actual flow rate. Because the flow rate depends on pressure and the user usually does not know the flow rate ahead of time, it is usually more accurate to specify an emitter coefficient. Do not specify both an emitter coefficient and a flow. Typical values are 250 gpm/psi^0.5 (20 L/s/m^0.5). Auxiliary Output: The user can save values for all elements from each event. However, in most cases the user is not interested in values far from flushing. Therefore, the user must specify conditions for element data to be saved and available for display for individual events. If the box, "Includes nodes with Pressure less than?" is checked, properties for elements with pressure less than the specified value are saved for display. If the box, "Include pipes with velocity greater than?" is checked, properties of pipes with high velocity are saved. This makes it possible to use color coding to display results of flushing without saving a great deal of unneeded values. The user then creates events within an area. It is assumed that the flushing events are conducted in the order in which they are listed. The key to order is usually to flush from clean water into un-cleaned areas. Conventional events are made up of the hydrant (or junction) to be flowed. These events have an advantage of being very easy to set up a large number of conventional events in essentially one step. The user will see the Selection dialog where individual junctions or hydrants are selected. Junctions or hydrants can be selected by polygon or they can be selected based on a selection set that has been previously defined. If not all the nodes in a polygon are to be flowed, it can be helpful to have a selection set done already. For UDF events, they must be created one at a time because the user must select flowed elements, controlled elements, and optionally the pipe run to be flushed. In this case a special form of the select dialog is opened. The events tab enables the user to get a quick view of the events that are contained in the area, and if desired, make events active or inactive for the next run. The notes tab enables the uwer to enter a text description of the area. In creating a UDF event, use the second button to select the operational elements (hydrant, junction, valve). If a hydrant or junction is selected, it is considered to be flowed. If an isolation valve or control valve is selected these are considered to be closed. If a pipe element is selected the default is that the pipe is closed. If the user selects the third button to select the pipes will be a part of the pipe run. In creating a UDF event, use the third button to add the pipe run elements. Once an event is created, if the event is expanded in the left pane, there is one row for each element that is flowed, closed, or part of a pipe run. The element label and type are properties of the element selected and the status is an editable field (unless it is a flushing element such as a hydrant) indicating if the element is open/closed, flowed, or part of a pipe run. The flow emitter or flows specified in an area tab can be overwritten by checking the Specify Local Flows check box for that element and inserting a different flow or emitter. Note fields are very important if the results of the flushing analysis are to be given to operators to locate elements to operate. The notes may included an address for a hydrant or at a location of a valve that needs to be closed. Flushing Results Browser The flushing results browser contains the results of a flushing run listed by event. The content of the browser corresponds to the current scenario. If it is not a flushing output scenario, no events would be displayed. The scenario can be switched to the flushing browser in the main drawing or by picking the button next to the output scenario selection in the right panel of the flushing manager. Before opening the browser it is helpful to set up color coding and annotations that will highlight the flushing events. Usually color coding pipes by velocity or shear stress, and junctions or hydrants by demand, will be the most useful. Conventional Results UDF Results Toolbar Buttons on Flushing Results Browser Zoom : zooms to extent of flushing event Highlight : highlights elements in flushing event. In highlighting, the pipe run color will override element symbology color coding. Reset : cancels out the selected event and displays results for representative scenario Report : opens preview of flushing browser report Help : opens flushing help Flushing Area Report (Flex Table) While the Flushing Results Browser displays flushing results on an event basis, the flushing area results flex table presents the results on a pipe basis listing whether the pipe met the flushing target and which event was the most effective in flushing that pipe. With the current scenario set to a flushing output scenario, open the flushing flex table. By default, the table will open with all pipes. If the model is large it is helpful to make a selection of elements and pick "Open on Selection" when opening the flex table. Flushing Notifications Message Text Message Category Response Pipe set not specified. Error Specify pipe set At least one flushing event element is not active during the flushing run. Warning Elements must be active to affect flushing results. Have you deleted any pipes since pipe set was created? At least one run pipe is not included in flush pipe set Information Ideally, pipes in a run should be included in pipe set. At least one run pipe is closed during the flushing run Warning Pipes in run should not be closed. At least one event contains a pipe run that is not continuous Warning Check for gaps in the pipe run. Reports The user can identify the extent of the drawing that will appear in the optional reports. Default Report Options User Defined Report Options Before opening the operator's report button, the modeler should: 1. Set up the desired background layer 2. Decide the extent of the view to display and if additional views are desired, set up those views. 3. Include detailed notes to help the operators locate the elements (e.g. an operator may not know where H-21 is located but will know "Hydrant in front of 31 Elm St.". Operator Report The operator report consists of three types of pages for each event: 1. Text description of the event indicating which elements to operate 2. Drawing of the event 3. Form which flushing operator can complete to describe results of flushing for feedback (optional). In addition to the default drawing of the event, the user can create "Secondary Views" which may for example, zoom into details of a complex intersection. To do this, right-click on Report Views in the left pane and select Add Secondary View. Draw a box around the extents of the secondary view and click Select New Report View. The view that appears when the report is open is called a Preview. With this preview, it is possible to: Change page set Print Export to a variety of file formats including .pdf and text file Transmit via email The report can be saved and it is possible to zoom and pan within the document. Example of a Conventional Report Example of a UDF Operator Report External Links Product TechNotes and FAQs Bentley Technical Support KnowledgeBase Bentley Learn Server
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Wiki Page: Why does the precipitation(cumulative) field for catchments show N/A at the 24 hour time step after computing? (Solution 500000087918)
Applies To Product(s): Bentley CivilStorm Version(s): 08.11.XX.XX Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem After running my model for the duration of the simulation I clicked on the last time step in time browser to review the results. When I looked at the precipitation(cumulative) field for the catchments I see N/A. Why? Product: CivilStorm V8i Version: 08.11.XX.XX Area: Output/Results Presentation, Problem ID#: 70798, GENERALINFORMATION See Also: Precipitation(cumulative), Cumulative precipitation, N/A in precipitation(cumulative field), catchment properties, catchment Solution The precipitation(cumulative) is reported as N/A at the 24 hour time step because by this point the catchments have reached the total cumulative precitpation that you defined in your Storm Event. See Also
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Wiki Page: Why don't my CivilStorm results for peak flow don't closely match my StormCAD results for peak flow? (Solution 500000092953)
Applies To Product(s): Bentley CivilStorm Version(s): 08.11.02.75 Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem My CivilStorm results for peak flow don't closely match my StormCAD results for peak flow. What's the reason for this? Product: CivilStorm V8i Version: 08.11.02.75 Area: Analysis/Computation, Problem ID#: 78320, PROBLEMSOLVING See Also: peak flow, StormCAD vs. CivilStorm, StormCAD vs CivilStorm, flows, modified rational method, rational method Solution The difference in the peak flows is because there is a difference between the rational method used in StormCAD (STMC) and the modified rational method being used in CivilStorm (CSD) for this model. Rational method (STMC) as you may know gets flow via the Q = CiA formula and it uses the Tc to determine the intensity. The modified rational method (CSD), however, uses the Q = CiA to find the flow, but the intensity is determined from the global storm event duration (Components > Global Storm Events). If you look up the duration list in the global storm events dialog box on your IDF curve, in the Storm Event dialog, you'll see that for the given storm you're looking at the intensity is probably not the same as the intensity that you were getting in StormCAD for the same storm event. This explains the reason that you are seeing a lesser flow at the peak in CSD vs. STMC. One option that you might want to consider using to work around this issue is the unit hydrograph method. Another thing that should be pointed out is that STMC is a peak flow steady state modeling software which models the peak flow at one moment in time, whereas CSD models flow over time. CSD therefore needs to actually develop hydrographs from them to route flow through the system. STMC is really used to design systems (using the standard straight rational method) where overflow is not intended vs. CSD is used to analyze system (using a hydrograph method) especially when you need to account for overflow volume through routing. Please contact technical support if you need any more help with this issue. See Also
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Wiki Page: What might cause a high continuity erro when using the SWMM Solver? (Solution 500000074995)
Applies To Product(s): Bentley CivilStorm Version(s): 08.11.XX.XX Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem When using the SWMM calculation engine (Engine type set to "Explicit"), what might be causing a high continuity error? High continuity error when using the SWMM calculation engine. Product: CivilStorm, SewerGEMS Version: 08.11.XX.XX Area: Analysis/Computation, Problem ID#: 51262, PROBLEMSOLVING Solution There are many things that can cause a high continuity error with the SWMM calculation engine. First, double check all your data input for errors. Next, try reducing the "routing timestep" in the calculation options. For example you may try a routing time step of 30 seconds, 10 seconds, 5 seconds or 2 seconds. See Also
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Wiki Page: In CivilStorm and SewerGEMS, why doesn't the flow into the system from a hydrograph load/inflow drop down to zero, after the end of the last ordinate in the hydrograph? (Solution 500000060654)
Applies To Product(s): Bentley CivilStorm Version(s): 08.XX.XX.XX Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem In CivilStorm and SewerGEMS, why doesn't the flow into the system from a hydrograph load/inflow drop down to zero, after the end of the last ordinate in the hydrograph? Version: 08.XX.XX.XX Problem Number: 33851 Solution For a hydrograph, if the last time in the table is less than the total simulation time, the simulation time and last flow will be appended to the hydrograph table. So, it will hold the last flow constant for the rest of the simulation. So, you should either end the hydrograph at zero or extend it to the total simulation duration. Note that pattern loads are different and will repeat the multipliers for simulation durations longer than the duration of the pattern. For example if the pattern is 24 hours and the duration is 48, then after 24 hours, it goes back to the first multiplier in that pattern and repeats. See Also
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Wiki Page: How do I find how long it takes a pipe to drain in CivilStorm? (Solution 500000084856)
Applies To Product(s): Bentley CivilStorm Version(s): 08.11.02.65 Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem I need to find how long it takes a pipe to drain in CivilStorm. How do I do that? Product: CivilStorm V8i Version: 08.11.02.65 Area: Data Input/Model Creation, Problem ID#: 65973, PROBLEMSOLVING See Also: Pipe drain time, Pipe drainage, drain time Solution Set up a pond with an inital elevation set to the elevation you need. Then you connect the pond to a pond outlet structure and connect that to a conduit. Finally, end your conduit with an free outfall. Run your EPS scenario and look at either a graph or the data table view for the pipe to see how long it takes to drain.
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Wiki Page: Is it possible to open a StormCAD V8 XM ... (Solution 500000058443)
Applies To Product(s): Bentley CivilStorm Version(s): N\A Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem Is it possible to open a StormCAD V8 XM model in CivilStorm V8 XM or SewerGEMS V8 XM? Problem Number 31554 Solution Yes. First, you need to have the latest version of CivilStorm or SewerGEMS (08.09.26.14+) Inside the program, go to File > Import > StormCAD V8 XM. Note that since HEC-22 inlets are not supported in CivilStorm, catalog inlets and percent-capture inlets will be converted to CivilStorm catchbasins with equivalent inflow-capture curves (you will be prompted to specify the increment and maximum flow of this curve.) See Also
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Wiki Page: What is the difference between a stand pipe and an inlet box? (Solution 500000059072)
Applies To Product(s): Bentley CivilStorm Version(s): N\A Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Bentley Technical Support Group Problem Problem number: 32202 What is the difference between a stand pipe and an inlet box? Solution Stand pipes and inlet boxes have intake openings that are parallel to the water surface. The structure is called a stand-pipe if it has a circular cross section and an inlet box from a rectangular cross section. Both surface openings discharge into a barrel sized large enough to prevent surcharge.
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Forum Post: RE: Pipe Geometry
In SewerCAD, StormCAD and SewerGEMS; I am still not able to find the upstream node X and Y fields and downstream node X and Y fields in a conduit flex table, I know there is 2 Row flex table and we can find the info there, but why we are not able to find that in one Row table as before? why when we copy the table to excel we have to modify; in other words "something exist before why eliminated?" is there a way to get the information as before? in one row was like that Upstream Upstream Downstream Downstream (X) (Y) (X) (Y) Regards, Mohamad.
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Forum Post: regarding sewergems
Dear Sir/madam, I wish to design a rectangular open channel section dimensions ( L X B) at suitable chainages to collect a strom water roadside using sewergems. Question -- Suppose my road is having L shape . Vertical distance of road (AB) is 200 m and horizontal distance (BC) is 500 m. Total = 700 m.Outfall at C. Can u tell me which tools & structures shall i select and type of solver for above problem . I will be highly greatful to you if give me a complete comprehensive solution to above problem in sequential steps . Thanks Parikshit
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Forum Post: RE: regarding sewergems
Hello Parikshit, Looks like you are doing storm water modeling, GVF-Rational solver is suitable for this type of calculation. You should use, channels, cross-sections & outfall for modeling. You can define the channel shape in the cross section properties. There are sample models which you can refer - C:\Program Files (x86)\Bentley\SewerGEMS8\Samples. Also you can go through Quick Start lessons (Help>Quick Start lessons) , which explains laying out elements, data input, results etc.
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Forum Post: RE: Could I trouble tech support to convert an old .wcd WaterCad file for V8i WaterGems use?
Sorry so late Sushma. Thank you! Just what we needed. Appreciate you taking time out to do this.
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Wiki Page: Updating Source File Using Model Builder [TN]
Applies To Product(s): Bentley WaterGEMS, Bentley WaterCAD, Bentley SewerGEMS, Bentley SewerCAD, Bentley StormCAD, Bentley CivilStorm, Bentley HAMMER Version(s): V8i Environment: N/A Area: N/A Subarea: N/A Original Author: Akshaya Niraula, Bentley Technical Support Group Overview It's always a huge challenge to maintain the synchronization between the source file and the Model. With the latest release of V8i, the powerful ModelBuilder got even powerfull and now we can update the source file also. This is continuation of the " Building A Model Using Model Builder " and " Updating A Model Using Model Builder " however it can be used independently. These steps can be followed in several modeling software applications like, WaterGEMS, WaterCAD, SewerGEMS etc. The procedure described below uses GeoDataBase as an original source of modeling information and WaterGEMS as a modeling software. Mantra, when updating source file, "The Hydraulic model is now source file and the GIS data is the target" Let's assume the Hydraulic model got updated. An existing pipe got tapped in two places and a new loop of 8" pipe is established. With this update the ModelBuilder should do the following to the source file: 1) Split the existing pipe in two places (Meaning, create new features in source file) 2) Update the pipe attributes (Meaning, update the pipe information in source file) Preview of Source File Symbology has been applied to the modeling elements to better illustrate the updates. Following image will show the population of the Unique ID in Pipe Table. Updating Source File Using ModelBuilder The steps described here will help to update the source file. This example updates the GeoDataBase source file however; any type of source file that was used to build the model can be updated. Before updating the source file directly it is recommended to make a back up copy of the source file that's planned to update by ModelBuilder. Open ModelBuilder Tools > ModelBuilder ModelBuilder, as shown below, will show up. Let's assume a worst case scenario that the existing link got deleted or file name /path got updated. If filename/path is the same, the existing link can be double clicked. Specify your Data Source The "Specify your Data Source" will show up. First select the Data Source type and then ‘Browse' for the source file, as shown. If the existing link on ModelBuilder is double clicked, there should not be any warning messages and/or the missing Tables. In this step, - source data can be selected - tables/ layers can be selected/ deselected - SQL query can be applied to filter the table if required - source table can be previewed When "Show Preview" box is checked, only highlighted Table will be displayed. Remember, if existing link is double clicked then the changes should be seen in the preview. If the changes are not there, start new model builder by clicking on "New" button on the first screen of ModelBuilder. Click Next. Specify Spatial and Connectivity Options Depending upon the source file (Hydraulic Model elements) this screen may look different. In this step, first provide the unit of your Source Data. If not sure try with "ft". Note: Source file does not have any Junction attributes. Click Next. Specify Element Create/Remove/Update Options Depending upon the requirement the selection of options may vary. For this particular example following options are selected. Note: For detail information, press F1 and help file will be launched. Click Next. Specify Additional Options This step is particularly important if the source file has Unique ID. In this workflow, the Unique ID is maintained in "Label" field of the model so; the "Label" is selected in "Specify key field". If Source file has different Unique field then "GIS-ID" needs be selected. If there is no unique field in the source file then select "Label". If the Unique ID field in source file name is say "WXYZ" then field "WXYZ" must be present in the Hydraulic Model. (User Data Extension from Tools menu is used to create "Custom" fields in Flex Table.) When new elements are created, Unique ID field (or WXYZ) will not be populated. As ModelBuilder will look for Unique ID under WXYZ field to update/create the new elements in source file, this Unique ID (WXYZ) must be populated with unique ID otherwise no new fields will be created. Click Next. Specify Field mappings for each Table/Feature Class If the existing link had been double clicked then everything in this step should be good. If a new button had been clicked then all the necessary elements and the fields need to be mapped. Follow the " Specify Field mappings for each Table/Feature Class " from " Create A Model Using ModelBuilder" and come back to this step. Click Next. Create Model Now? Select "No" and click on "Finish". Click Finish. Sync Out Select the link that was just updated/used and click Sync Out. Finally the screen should look like below with all the updates and new features as per the Hydraulic Model in the Source File. This concludes the updating of the source file process using ModelBuilder. See Also Updating A Model Using Model Builder Building A Model Using Model Builder Product TechNotes and FAQs Haestad Methods Product Tech Notes And FAQs WaterGEMS V8 Modeling FAQ External Links Bentley Technical Support KnowledgeBase Bentley LEARN Server Water and Wastewater Forum
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Forum Post: RE: Pipe Geometry
Mohamad, I'm not currently sure why we removed it, but if I had to guess it's probably because after some consideration we found the fields had less value to most people and the information could be found in other places, like the upstream and downstream node properties, even though it might not be quite as convenient. Can I ask what you might need this information for? Maybe there's another solution that we could find to help you. Regards, Mark
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Wiki Page: In CivilStorm or SewerGEMS, what is the ... (Solution 500000060225)
Applies To Product(s): Bentley CivilStorm Version(s): 08.09.26.17 Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem In CivilStorm or SewerGEMS, what is the difference between a suppressed or contracted weir? Solution See attached diagram. A contracted weir has its crest and side so far removed, respectively, from the bottom and sides of the weir box or approach channel in which it is set, that full contraction, or reduced area of flow, is developed. If the weir conforms to the sides of the approach channel above the crest and the channel sides extend downstream beyond the crest, thereby preventing lateral expansion of the nape, the end contractions are suppressed.
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Wiki Page: What is the purpose of the left and right overbank in the conduit properties? (Solution 500000060234)
Applies To Product(s): Bentley CivilStorm Version(s): 08.09.26.17 Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem What is the purpose of the left and right overbank in the conduit properties, when using the "overbank Channel" roughness type of an irregular channel? What is the purpose of "left bank station"/"left overbank mannings n", "right bank Station"/"right overbank mannings n" and "channel manning's n". in CivilStorm or SewerGEMS? Solution When selecting "Overbank channel" as the roughness type of an irregular channel, the user must define the roughness coefficient for the left bank of the channel, right bank of the channel and central part of the channel. The "Left bank station" is the station point that marks the end of the left bank. The left bank is measured from the first station-depth point in the irregular channel section table to the selected point. The "left overbank mannings n" is the roughness coefficient for the left river bank (the part of the channel to the left of the "left bank station".) The "right bank station" is the station point that marks the beginning of the right bank. The right bank is measured from the selected point to the last station-depth point in the irregular channel section table. The "right overbank mannings n" is the roughness coefficient for the right river bank (the part of the channel to the right of the "right bank station".) The "channel mannings n" is the roughness coefficient for the middle part of the channel, between the left and right bank stations. Basically if the water surface is below the banks, the "channel mannings n" applies but if the flow rises to a point where some of it goes over the banks on the sides of the river, part of the flow is subjected to a different roughness, based on the coefficients entered.
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Wiki Page: In SewerGEMS or CivilStorm, Why do I som... (Solution 500000061292)
Applies To Product(s): Bentley CivilStorm Version(s): all Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem In SewerGEMS or CivilStorm, Why do I sometimes have a pipe whose calculated depth is below the pipe top, yet the "capacity (flow / full flow)" is above 100% What is the meaning of Full Capacity? Solution The Full Capacity is the flow through the pipe if normal depth were equal to the top of the pipe. You can verify this by using a simple mannings equation normal depth calculator such as Bentley Flowmaster. However, in SewerGEMS and CivilStorm, water does not flow at normal flow; it computes a varied flow profile. So, the HGL slope can be changing over the length of the pipe and thus depth can be different than normal depth and this "full capacity" value may not be a good thing to refer to. Also, dynamic effects such as momentum and tailwater are accounted for. Basically, your profiles are likely not flowing at normal depth, which is why they seem to be "At odds" with the full capacity values. You may want to look at the "depth/rise" result field instead. This is the middle depth of the pipe divided by the diameter/rise, which gives you an idea of how full the pipe is at the midpoint.
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Wiki Page: How can I use CivilStorm to evaluate TSS removal efficiency in a detention pond? (Solution 500000058406)
Applies To Product(s): Bentley CivilStorm Version(s): N\A Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Gina Cavallo, Bentley Technical Support Group Problem How can I use CivilStorm to evaluate TSS removal efficiency in a detention pond? CivilStorm V8 XM Problem 31515 Solution For this type of analysis, you would need to use the SWMM 5 features that we support. So, the engine needs to be set to SWMM in the calculation options. (Analysis>Calculation Options) In the properties of the pond, there is a section called SWMM Extended Data. You can set Apply Treatment to True, and then enter a Treatment Collection for the TSS pollutant. The Treatment Collection will include an expression that the user will have to develop to compute pollutant removal. We have a little information on this in the Help, but since this feature is taken directly from SWMM 5, the SWMM User Guide should also be helpful: http://www.epa.gov/ednnrmrl/models/swmm/epaswmm5_manual.pdf
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Wiki Page: What is the purpose of the "weir end coefficient" when using a trapezoidal weir for a control structure in SewerGEMS/Civilstorm? (Solution 500000059990)
Applies To Product(s): Bentley CivilStorm Version(s): N\A Environment: N\A Area: Layout and Data Input Subarea: N\A Original Author: Jesse Dringoli, Bentley Technical Support Group Problem What is the purpose of the "weir end coefficient" when using a trapezoidal weir for a control structure in SewerGEMS/Civilstorm? Solution The weir end coefficient is the discharge coefficient for flow through the triangular ends of the trapezoidal weir. The other weir coefficient is the discharge coefficient for flow through the central portion of the weir (for flow in CFS for US units). Typical values are: 3.33 US for sharp crested transverse weirs, 2.5 - 3.3 US for broad crested rectangular weirs, 2.4 - 2.8 US for V-notch (triangular) weirs
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