Applies To Product(s): StormCAD Version(s): V8i, CONNECT Edition Area: Modeling Original Author: Mark Pachlhofer, Bentley Technical Support Group Problem Description Can I use a low impact development (LID) area in StormCAD? Solution StormCAD's GVF-Rational solver is a peak flow, steady state model. Analysis of Low Impact Development controls only make sense with an unsteady simulation, with the element of time is involved. The reason why LID controls are available in the StormCAD product interface is because StormCAD uses the same schema (underlying database structure) as SewerCAD, SewerGEMS and CivilStorm. These other products have additional capabilities, such as LID. The LID element layout tool is purposely semi-hidden in the "Other storm" section of the layout toolbar in the CONNECT Edition. If you're interested in analyzing the impact of LID controls, CivilStorm or SewerGEMS have this capability. These products feature two dynamic numerical solvers. StormCAD is best for using the standard rational design to size pipes or analyze a system for worst-case peak flow conditions. See Also Low Impact Development (LID)
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Wiki Page: Can I use a low impact development (LID) controls in StormCAD?
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Wiki Page: Low Impact Development (LID)
Applies To Product(s): CivilStorm, SewerCAD, SewerGEMS Version(s): V8i, CONNECT Edition Area: Modeling Original Author: Terry Foster, Bentley Technical Support Group Compatibility Low Impact Development controls can be modeled in Bentley CivilStorm, SewerGEMS and SewerCAD. StormCAD and the GVF-Rational solver are peak flow (steady state) only. See more here: Can I use a low impact development (LID) controls in StormCAD? Overview Low-Impact Development (LID) is a term used in the US and Canada to describe a more eco-friendly land planning and design approach to stormwater management. In the United Kingdom, this approach is referred to sustainable urban drainage systems (SUDS), and in Australia, it's called water-sensitive urban design (WSUD). The US terminology is used in this software and its documentation. LID controls help developed watersheds or sites to retain or enhance pre-development hydrologic characteristics through the use of techniques that conserve natural systems and hydrologic functions. Some of the goals of LID are to: Protect natural systems such as drainage ways, vegetation, and soils Decentralize stormwater management, shifting it to small-scale practices at the source location Preserve open space Minimize land disturbance and impervious area Disconnect impervious surfaces Increase flow path lengths and travel times Customize site design to the needs of a particular site, instead of simply relying on traditionally accepted practices A number of government agencies, universities, and other groups publish educational information, research and design guidance for implementing LID and LID controls. Places to start include: U.S. Environmental Protection Agency's Low Impact Development website and fact sheet on Low Impact Development (LID) and Other Green Design Strategies Low Impact Development Center Low Impact Development (LID) Urban Design Tools Website Low Impact Development Types Bio-retention cells (rain gardens, green roofs) Rain barrels Porous pavements Vegetative swales Infiltration trenches Summary of LID Control Layers LID control is represented by a combination of vertical layers, which may include (in top to bottom order): Surface Soil Pavement Storage (with optional underdrain except at rain barrels) Defining Low Impact Development Control Controls are defined in the LID Controls editor Defined per unit area Basic design can be reused in multiple locations Model performs moisture balance How much water moves between layers How much water is stored within each layer In a project, you would go to Components > Low Impact Development Controls. This is where you would enter the different LID Controls for the project. After these are set up, you can export them to the Engineering Libraries for use in other projects. Note: The underdrain is only required on a rain barrel control. If using a rain barrel, you will notice that it has a Drain Delay. The drain delay is the number of dry weather hours that must elapse before the drain line in a rain barrel is opened (the line is assumed to be closed once rainfall begins). After entering the Low Impact Development (LID) Controls, you will add the catchments and LID elements to the network. Note: Every LID element is associated with a "Parent" catchment that contributes flow to the LID. The parent catchment outflow hydrograph reflects LID Control(s). The parent catchment may be associated with multiple LID controls acting in parallel. A parent catchment may include a non-LID area. The catchment must have an outflow node, which can be another catchment (useful for modeling LID controls in series). Low Impact Development Element Properties Occupies Full Catchment? : If set to True, the LID Control will occupy the full area of the LID Control's parent catchment. Occupied Full Catchment?: If set to False, the properties will change and prompt for three additional fields. Area of Each Unit (ft^2): Specify the surface area occupied by the LID. Percent Impervious Area Treated (%): The percentage of the impervious portion of the sub-catchment's non-LID area whose runoff is treated by the LID practice. Send Outflow to Pervious Area?: If the outflow from the LID Control is returned onto the sub-catchment's pervious area rather than going to the sub-catchment's outlet, set this to True. An example where this might apply is a rain barrel whose contents are used to irrigate a lawn area. This field is ignored if the LID Control property Occupies Full Catchment? is set to True. Top Width of Overland Flow Surface of Each Unit (ft): This is a parameter that is only applied to LID processes such as Porous Pavement and Vegetative Swales that use overland flow to convey surface runoff. Bio-retention Cells and Infiltration Trenches simply spill any excess captured runoff over their berms. Percent Initially Saturated (%): This is the degree to which the unit's soil is initially filled with water in a Bio-retention Cell. Zero saturation corresponds to the wilting point moisture content. One hundred saturation has the moisture content equal to the porosity. The storage zone beneath the soil zone of the cell is assumed to be completely dry. For other types of LID Controls, this corresponds to the degree to which their storage zone is initially filled with water. Number of Replicate Units: This is the number of equal size LID units. (Please visit the site to view this video) See Also
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Forum Post: Sewergems - Highly conservative pipe size
why is the pipe size based on automated design too high than required. I had fixed the slope for the pipe network. So with this fixed slope where a pipe size of 700 dia would be adequate, the design shows 900 dia. I am using this software for the first time and please let me know if any parameters need to changed.
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Forum Post: RE: Sewergems - Highly conservative pipe size
Hello Sudheer, Could you please let us know which solver you are using in SewerGEMS? Are you designing with GVF Convex solver or GVF-Rational solver? The results depend upon the design constraints specified by you, you mentioned that you had fixed the slope for the pipes, does that mean you had given minimum and maximum slope constraints or its something else? Could you please clarify here? If you are using GVF-Rational solver then please read the below mentioned wiki about over-sizing pipes in rational solver.
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Forum Post: RE: Sewergems - Highly conservative pipe size
Hi Sushma, Im using GVF-Rational solver. Option-1 mentioned in the wiki is tried, but no change in results. Shall I share the file?
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Wiki Page: How to open an existing project in the AutoCAD platform
Product(s): WaterGEMS, WaterCAD, HAMMER, SewerGEMS, CivilStorm, SewerCAD, StormCAD Version(s): 10.00.XX.XX, 08.11.XX.XX Area: Layout and Data Input Problem How do you open an existing project (from the standalone version for example) in the AutoCAD platform? [Problem ID#: 61067] Solution 1. Open the AutoCAD platform (eg. "WaterCAD for AutoCAD..." shortcut, for WaterCAD). A blank drawing should open. 2. Select the menu item corresponding to the product you're using (eg. "WaterCAD" menu for WaterCAD). 3. Select Import > Hydraulic Model (or Project on older versions) > Import > [Product Name] Database. 4. Browse to and open the model with extension .SQLITE or .MDB. If the existing model was created in a much older version, such as WaterCAD 5.0, it may need to be upgraded to a more recent version of Standalone first, before the MDB or SQLITE file will be available. If you were previously working on a hydraulic model in the AutoCAD platform, you would instead open the related DWG (or DXF) file and the hydraulic model will automatically open (if it is in the same folder with the same base file name). Note: Any changes made to the model in the AutoCAD platform will be reflected in the standalone version when you save the model. See Also What files are necessary to work with a WaterCAD for AutoCAD drawing?
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Blog Post: Converting a Haestad hydraulics model file to a GIS Database
This article uses WaterGEMS as an example, but the same steps could apply to HAMMER and SewerGEMS. Most workflows that I have encountered involve a user taking GIS information and building a hydraulic model. Some users may want to work from the opposite direction with an already constructed Haestad product hydraulic model and build a GIS database. This is probably not as common a situation, but may happen if a user is more familiar with the hydraulic modeling software than using GIS software and there is currently no GIS information available. There are a few ways to build a geodatabase file from a Haestad product hydraulic model. The first way assumes the user knows a little about ArcMap and how to use it while being familiar with Bentley’s ModelBuilder tool. The first step is to open WaterGEMS for ArcMap and load the model file. Then open the geotable for all the elements in your model and add all the fields that should be included in the geodatabase being built. Next use the geoprocessing tool called “Feature class to Geodatabase (multiple)”, which is used to construct the geodatabase from all the elements in the hydraulic model. The next steps must be done in WaterGEMS f or ArcMap because it has the ModelBuilder data source option of a geodatabase file. Start ModelBuilder and choose the database that was created in the above steps. In step 3 of ModelBuilder, make sure all the boxes are checked. Proceed through step 4 and in step 5, the field mapping step, select the fields that are going to be maintained in sync with the geodatabase for future maintenance of the GIS data. Use the model “Label” field as your 'Key field' for step 5. Make certain that each label is unique. After setting up the mappings, syncing the data in and out to the model requires the user to click the “Build Model” or “Sync Out” icons in the ModelBuilder window. The other way to build a GIS geodatabase is to convert your model elements to shapefiles. This can be done using WaterGEMS standalone or one of the other platform products and is accomplished by opening each flextable, editing the flextable to include all the columns that are needed in the shapefile (geodatabase), clicking on the icon in the upper left hand corner of the table. This needs to be done for each table in the model that contains elements. Then rename the columns if necessary and click the “Ok” button. Once the flextables are converted a GIS system can be used to construct a geodatabase from the shapefiles.
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Wiki Page: Modeling an Inverted Siphon
Applies To Product(s): SewerGEMS, CivilStorm, StormCAD, SewerCAD Version(s): V8i, CONNECT Edition Area: Modeling Original Author: Scott Kampa, Bentley Technical Support Group Problem How to you model an inverted siphon? (sometimes known as an inverse siphon) Problem ID#: 82436 Solution An inverted siphon consists of two or more gravity pipes (depending on changes of slope) that will be surcharged. To model this create conduits sloping downward and upward connected at a central junction, such as a junction chamber, bolted manhole or a transition. The central nodes/structures on the siphon (which may not be exist in the actual system) are used to model the change in slope. They need to be bolted or extend above the ground so the hydraulic grade line can be above the top of the pipe (surcharge condition) If you do not have a vertical structure extending above the HGL then it is best to use a bolted manhole ("Bolted Cover" = "True") or a transition node element. The calculation engines are robust enough to handle adverse slopes. You can apply any bend losses to the central node as a standard headloss. If you feel that friction losses are the predominant loss you can assume no headloss at the central junction. If the siphon has multiple barrels in parallel, such that one takes the low flow and others come on line as flow increases, then it may be necessary to create a different physical alternative for each possible number of pipes and replace the siphon by the equivalent pipe size in each alternative. Example Model Note: the above model is for example purposes only. It can be opened in version 08.11.05.58 and above.
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Forum Post: Fire Flow with a Selection Set / PRV / Contours
Hello, When I run my Fire Flow across all nodes it runs fine and gives me values across all columns in the flextables. But when I use a selection set of nodes I want to specifically see in my Fire Flow analysis it produces only few nodes with values and the rest as "N/A". I did not change any of the Alternative constraints or Scenario options from the entire system run. What could be causing this issue to happen? Also, is there a resource that could help me understand how to use PRV's in WaterCAD? I want to be able to control the PRV's HGL but in the flextables they appear to be calculated values? I have a system with existing PRV's and I essentially want to be able to adjust the reduced pressure into the next pressure zones. How does WaterCAD know what pressure zone to shift to in the PRV? Is there anyway to display contours in the plan view of WaterCAD? If so is there an easy way to print off the plan view so I can easily talk about the model with people that arent standing by my computer? Thanks! John
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Forum Post: Active Demand Adjustments based on a query
Hi ! I have a demand adjustment problem. Because I often add new nodes and pipes, I associated Active Demand Adjustments with selection sets based on a query (User defined : East or West). With that query, every nodes follows automatically with my selection set(EAST or WEST) as I create them. BUT, Every new node created after I associated in my Active Demand Adjusment did not follow. My demand is not multiplied as if the node wasn't included in my selection. But when I select my query 'East' I can see my node selected. Is it possible to ''Refresh'' my data so that the Active Demand Adjustements reads my query with every new node ? Or I have to create a selection set and associate it to my Active Demand Adjustments everytime I add something new?
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Wiki Page: WaterGEMS For ArcGIS [FAQ]
Product(s): WaterGEMS, HAMMER Version(s): 08.11.XX.XX and 10.00.00.XX Area: Modeling Create/Open/Save Models How do I create a new WaterGEMS model inside ArcMap? How do I open an existing WaterGEMS model inside ArcMap for the first time? How do I open a WaterGEMS model that is already associated with an ArcGIS MXD file? How do I save my model files when working in the ArcMap environment? Installation, Compatibility, Integration Which versions of WaterGEMS support which versions of ArcGIS? I've integrated WaterGEMS with ArcGIS and I have the correct versions, but I don't see the WaterGEMS menu. Why? When working in ArcGIS mode, why are the tools in the WaterGEMS layout toolbar grayed out? What is the difference between using the "WaterGEMS for ArcMap" shortcut versus opening ArcMap normally? Data Conversion (ie. import/export) Preparing GIS data for use in the hydraulics and hydrology products How can I convert my GIS data to a water or storm-sewer model inside ArcMap? What is the best procedure to use when creating a shapefile or feature class to help ensure that when I create a model from it using modelbuilder I won't run into problems with pipe or junction connectivity? General What are some operations that I should NOT be performing in WaterGEMs for ArcMap? How do I use and display Active Topology for elements on the ArcGIS/ArcMap Platform? Why a double clicking on element doesn't show the properties for the element inside ArcMap? Geodatabase (.mdb), Geotable, and ArcMap Document File (.mxd) How does the geodatabase (.mdb) file function in WaterGEMS for ArcMap? What is a Geotable? Can I add a field to a WaterGEMS layer without corrupting the feature class or geodatabase? After working on a project in ArcGIS mode and saving an .mxd, why does the WaterGEMS model not appear when reopening the .mxd? Licensing Why is my license listed as "Not Available" under the extensions (Customize > Extensions) in ArcMap? If I'm working in ArcMap without a WaterGEMS model open, am I still using a WaterGEMS license? Element Symbology How do I color code my elements in WaterGEMS for ArcMap? How do I color code different properties on the same layer in WaterGEMS for ArcMap? How do I automatically get my layers in WaterGEMS for ArcMap to populate the WaterGEMS symbology that's in standalone or in the WaterGEMS/CAD for AutoCAD version? How can I enable the flow arrows and active topology colors when working in ArcGIS mode? How do I remove a color coding from a WaterGEMS layer? In WaterGEMS for ArcMap I do not see a dashed line connecting the customer meters to the associated element like I do in WaterGEMS standalone. Why is this? Why aren't all the WaterGEMS properties available when color coding or annotating in ArcGIS? See Also Haestad Product TechNotes And FAQs WaterGEMS and WaterCAD TechNotes and FAQs
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Wiki Page: Using Google Earth, Bing Maps, or other inactive data sources as a background layer
Product(s): WaterGEMS, SewerGEMS, CivilStorm, StormCAD, PondPack, SewerCAD, HAMMER, WaterCAD Version(s): 08.11.XX.XX, 10.00.XX.XX Area: Data Input Problem Can inactive web map sources be used as background layers? Solution Currently, this can only be done on the platform products such as Microstation, ArcMap, or AutoCAD. To use an interactive map as a background layer in ArcMap go to File > "Add Data" > "Add Data from ArcGIS Online" and sign in to the website if necessary. See Also How do I import a Google Earth image so it lines up with my model? How do I create a .KMZ Google Earth file out of my model? [Help Topic] Using a Google Earth View as a Background Layer to Draw a Model
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Forum Post: How to Import Sub-model to Water-gems??
Whenever I am going to import sub-model in watergems despite relabeling of Target and submodel elements. Can someone give me the reason i am getting the error message.
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Forum Post: RE: How to Import Sub-model to Water-gems??
complete target model become in active, only sub-model imported run. besides some of the pumps lost its definition in target model.
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Forum Post: RE: Sewergems - Understanding the SWMM Engine -Non Convergence error
Hi Scott How can I determine which elements have not converged?
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Forum Post: RE: How to Import Sub-model to Water-gems??
Hello Anan, If the submodel has the common scenarios and alternatives names with the target scenario, then it will override the different properties in the target model. So the user notifications shows that these scenarios and alternatives have been changed/ overridden during this Submodel import process. Please go through the below mentioned wiki about import/export of submodels, which explains the rules of submodel import/export process, you will find it helpful.
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Forum Post: RE: Fire Flow with a Selection Set / PRV / Contours
Hello John, There can be several reasons behind why some nodes show values as N/A, please see below wiki on understanding fire flow results for that. Look at the section "fire flow results not available". 2. About modeling PRV's using in WaterCAD and understanding how do they work, please see below mentioned wiki on PRV's , pressure zone manager and District meter areas. https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/22957.how-does-the-pressure-reducing-valve-prv-work https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/11913.using-the-pressure-zone-manager https://communities.bentley.com/products/hydraulics___hydrology/w/hydraulics_and_hydrology__wiki/25763.modeling-a-district-metered-area-dma 3. You can create contours in the plan view of WaterCAD. For that please go to View>Contours>Create contours for the required field and then take a print of that through File>print option.
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Forum Post: RE: How to Import Sub-model to Water-gems??
If the target model elements are becoming inactive, that's an indication that you're looking at a scenario that uses an Active Topology alternative that did not exist in the target model. The "lost" pump definitions indicate a mis-match with the physical alternative. The article that Sushma linked to should help explain this a bit more.
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Wiki Page: Hydraulic grade discontinuity at steep pipes or across nodes (frontwater analysis)
Applies To Product(s): StormCAD, CivilStorm, SewerGEMS Version(s): 10.00.xx.xx08.11.xx,xx Area: Calculations Original Author: Terry Foster, Bentley Technical Support Group Why do I see a jump in the hydraulic grade in the profile? Typically, the StormCAD solver uses a backwater analysis. This type of analysis starts at the network outlet under free discharge, submerged, or tailwater control, and proceeds in the upstream direction. Steep pipes, pipes with a profile description classified as S1, S2, S3, or some composite of these slopes, tend to interrupt the backwater analysis, and reset the hydraulic control to critical depth at the upstream end of the steep pipe. At this point StormCAD performs a frontwater analysis for the steep profile, with the backwater analysis recommencing from the upstream structure. An example of a steep pipe where frontwater analysis will take place: StormCAD will perform a frontwater analysis in a steep pipe operating under supercritical flow, since these pipes are typically entrance controlled. The hydraulic control is at the upstream end of the conduit and the gradually varied flow analysis will proceed in a downstream direction until either the normal depth is achieved, a hydraulic jump occurs, or the end of the pipe is reached. Even though outlet control rarely occurs in supercritical flow situations, the frontwater analysis is still performed for purposes of determining exit velocity. In a case such as this, the software will use inlet control at the upstream end of the steep pipe. A steep pipe with inlet control is able to transport a greater discharge than the inlet accepts. Since the control section is just inside the pipe at its entrance, the flow profile passes through critical depth at this location. The downstream pipe has no affect on the steep pipe.The flow in the steep pipe will approach normal depth as it moves along. There may be pressure flow at the downstream end of the pipe. This may cause a hydraulic jump just inside the end of the pipe. This will provide a transition between the supercritical and pressure flow. StormCAD analyzes one pipe at a time as there could be headloss in the transition or there could be a slope change from one pipe to another. If a user has two steeps pipes running continuously with the same characteristics, it would be better to make them one pipe. Since the program's algorithm is fundamentally based on backwater analysis, a continuous frontwater analysis is not performed through two or more consecutive steep pipes.This is a performance trade-off that has little impact in evaluating performance of the collection system in most situations. The assumption of critical depth at the upstream end results in a conservative depth in all cases, and is exactly correct at the point of the steep run furthest upstream. Discontinuity across a node structure If the conditions warrant, a hydraulic jump can form in the middle of the pipe, which causes a slightly different situation because the backwater analysis continues through the node where the hydraulic jump occurs (see segments B and C and node Y below). In the screen shot below a frontwater analysis is performed in all the arrows that start at the left and go to the right (>>>) and a backwater analysis is done for all arrows that start at the right and go to the left (<<<). When a hydraulic jump occurs, the location of the jump is essentially where the backwater analysis (which starts at the downstream node) stops. In the example below, a frontwater analysis would be performed at segment B and halt where the hydraulic jump occurs. A backwater analysis is performed from structure Y to the right side of the hydraulic jump, which can be see as segment C. Essentially, it's like StormCAD is treating this one pipe as two separate sections in order to create this profile because a frontwater analysis is done in part of the pipe and a backwater analysis is done in the other part. When you have conditions occur like this there is no "discontinuity" across structure Y and you will see entrance loss and headloss drawn as you would normally expect. This is because segment C starts at critical depth (at the downstream side of node Y) and moves to the left and segment D starts at critical depth and moves to the right, so we can draw a continuous profile line at the structure (critical depth - critical depth = continuous profile). If we have a situation that occurs just upstream of this pipe where we see segment A, structure X, and segment B we'll see a discontinuous profile drawn at the structure (X). This occurs because segment A starts at critical depth on the left and approaches normal depth on the right and segment B starts at critical depth on the left and also approaches normal depth at the right side (approaching normal depth - critical depth = discontinuous profile). The profile at the structure is discontinuous and is drawn as you see at structure X. If you'd like to further examine an area like structure X to see how changing the slope slightly might effect where the hydraulic jump would occur what you might try is this: 1) Note the Invert (Stop) elevation for the pipe containing segment A 2) Change the "Set Invert to stop?" property for pipe that contains segment A to "False" 3) Drop the invert by 1/10 and compute the model. What you're looking for is to see how much change in slope it takes to start seeing the hydraulic jump just upstream of structure X. Sometimes changing the stop invert by just 1/10 will be enough to see the change from the pipe having an S2 profile description to a composite S1/S2 profile description where you will see the jump occur. 4) Repeat 3 until you see the jump and note the change in the stop invert from the original value. Doing this might provide you with a better understanding and feel for what is happening in that pipe and across the structure Other considerations: Rapidly Varied Flow (Hydraulic jumps) Rapidly varied flow is turbulent flow resulting from the abrupt and pronounced curvature of flow streamlines into or out of a hydraulic control structure. Examples of rapidly varied flow include hydraulic jumps, bends, and bridge contractions. The hydraulic phenomenon that occurs when the flow passes rapidly from supercritical to subcritical flow is called a hydraulic jump. The most common occurrence of this within a gravity flow network occurs when there is a steep pipe charging into a particularly high tailwater. Free Outfall StormCAD allows you to define the tailwater condition at the outlet as either Free Outfall, Crown Elevation or User-Specified. In a pipe with a hydraulically steep slope, the Free Outfall condition will yield a starting depth equal to normal depth in the pipe. For a pipe with a hydraulically mild slope, the Free Outfall condition will yield a starting depth equal to critical depth. If an outlet has multiple incoming pipes, the Free Outfall condition yields a starting elevation equal to the lowest of the individual computed elevations. The Crown condition should be used when the pipe discharges to an outlet where the water surface elevation is equal to the elevation of the top of the pipe. Structure Flooding If you have flooding at manholes in SewerCAD or at inlets in StormCAD (the elevation of water is above the structure rim elevation), the backwater analysis will continue by resetting the hydraulic grade to the structure rim elevation or ground elevation, whichever is higher. However, if a structure is defined with a bolted cover, the hydraulic grade is not reset to the rim elevation. In actual flooding situations, flows may be diverted away from the junction structure and out of the system, or attenuated due to surcharged storage. In this program, even though the governing downstream boundary for the next conduit is artificially lowered to prevent the propagation of an incorrect backwater, the peak discharges at the structure are conserved and are not reduced by the occurrence of flooding at a junction. See Also What is the difference between the Hydraulic Grade and Energy Grade 'Structure Loss' calculation option?
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Wiki Page: Results show as "N/A" when clicking a node in the Fire Flow Results Browser
Applies To Product(s): WaterGEMS, WaterCAD Version(s): V8i, CONNECT Edition Area: Output/Results Presentation Original Author: Jesse Dringoli, Bentley Technical Support Group Problem When clicking any node in the fire flow results browser all results (such as flextables) become "N/A". Problem ID#: 49383, Internal Reference Number: 41905 Solution This can be caused if the fire flow alternative has not been configured to save auxiliary results. Set the "fire flow auxiliary results type" to either "All Nodes" or "Failed Nodes" depending on what you need to review in your model. Then configure the other options if necessary. If you have a lot of nodes that you're running a fire flow for you may want to consider saving your output files to a different location than where you model files are saved because one output file will be generated for each node that you are processing in the fire flow. Initially, you can restore the fire flow results browser by clicking the "Reset to standard steady state results" button or changing the active scenario and then changing it back to the scenario you're studying. Note the fire flow results browser is only used to see results in other elements during individual fire flow runs. The fire flow flextable should be sufficient if you only need summary results for the fire flow run. See Also Understanding Automated Fire Flow Results What is the Fire flow results browser used for? Find if pump operates off of the pump curve during an automated fire flow scenario
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