Applies To Product(s): Bentley SewerCAD, Bentley SewerGEMS, Bentley WaterCAD, Bentley WaterGEMS, Bentley CivilStorm Version(s): 08.11.XX.XX Environment: N\A Area: Modeling Subarea: N\A Original Author: Sushma Choure, Bentley Technical Support Group Problem: Is it possible to perform clash detection (otherwise known as Conflict Resolution) between storm, sewer and water utilities using Bentley Hydraulics and Hydrology (Haestad) Products? Solution: To perform clash detection between the storm/sewer/water models you need to have Bentley Navigator or Subsurface Utility Engineering (SUE) & Subsurface Utility Design & Analysis (SUDA). It’s not possible to do this using a Hydraulics and Hydrology (Haestad) product on it's own. Navigator is used to perform the clash detection but you cannot edit the models there. Whereas SUE can perform the clash detection as well as you can make the changes in model there itself. It provides 3D modeling of underground utilities of all sorts, including storm and sanitary systems. Using SUDA you can have hydraulic capabilities to the functionalities provided in SUE. SUDA leverages the power of hydraulic design/analysis capability in SewerCAD, CivilStorm, SewerCAD, and SewerGEMS wrapped up in a single package and runs in the OpenRoads environment. While the capabilities of all 4 storm water products are included in the same package, the functions available to any specific user depends on which licenses you have active. Below are the options available to perform clash detection. Option 1: Using Bentley Navigator for clash detection: Export the i-models of E.g. storm & sewer models from StormCAD/SewerCAD/SewerGEMS. Import i-model into Bentley Navigator, perform the clash detection. Please note that i-models are not editable, so you can’t make changes in Navigator. Make the changes in models separately as observed in the clashes. Here is the support solution which explains how to perform clash detection in Bentley Navigator. http://communities.bentley.com/products/projectwise/project_review/w/wiki/8823.clash-detection-in-bentley-navigator Option 2 : Using Bentley Subsurface Utility Engineering for clash detection & editing. Export the shapefiles using Bentley SewerCAD/StormCAD/CivilStorm/SewerGEMS/WaterCAD/WaterGEMS for each element separately using Flex table. 2. Import the models (shapefile) into SUE, using Modelbuilder. 3. Run the clash detection tool. 4. Adjust the element positions and elevations in SUE, if clashes are there. 5. Then use the Modelbuilder to sync out the data. 6. Build the model again in Haestad products using Modelbuilder. Here is the support solution which explains how to perform clash detection using SUE: http://communities.bentley.com/products/road___site_design/w/road_and_site_design__wiki/17691.video-clash-detection Option 3: Subsurface Utility Design and Analysis (SUDA) will have conflict detection capabilities of SUE with the hydraulic design capabilities of SUDA. You will be able to check for conflicts between any modeled underground utilities, drainage and sanitary networks, and even 3D road and bridge design artifacts to help guide your design. Thus, in a more manual process you would design and model your road/site, existing utilities, proposed utilities, and proposed drainage, then check for conflicts on all the above to guide your decision making process for the remainder of the design. The procedure for conflict detection is same as mentioned for SUE. The workflow would be: Model the network in SUE using the SewerGEMS/CivilStorm/StormCAD solvers. Also you can model other underground utilities. Perform the clash detection same as mentioned in option 2. If you find any conflicts/clashes in the model adjust them>rerun the model using Storm-Sewer solver to check whether it follows design constraints or not >Then again perform clash detection to check for conflicts if any. At some time in future we may consider automating the clash detection along with the design engine, which will avoid this batch process. Also See Subsurface Utility Engineering (SUE) video clips, technotes, and FAQs Subsurface Utility Engineering Software Product Information Page OpenRoads Technology Product Information Page
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