What are some best practices and things to watch out for when exporting a StormCAD (or OpenRoads SS4+) model to GEOPAK and opening that model in GEOPAK Drainage?
First, several improvements to the GEOPAK export feature have been added in the SELECTseries 5 release of StormCAD (and SELECTseries 4 of OpenRoads). If you have not done so already, it is strongly recommendated that you install SELECTseries 5 or (when available) higher. If you're using SELECTseries 4, these improvements are also included in the latest cumulative patch set. You can read about patches here:
Also, GEOPAK Drainage tends to be more sensitive to any missing data input or other data entry issues compared to StormCAD. First, Validate the StormCAD model and ensure that the data entry is correct and that results are reasonable. Here is a list of other data entry problems to be careful of:
1) The Maximum Gutter Depth, and Manning's n (inlet) and Catalog inlet curb opening length fields for catchbasin nodes need to be set greater than zero2) All Catchbasin nodes need to reference catalog inlets and need to have at least one attached catchment. Catchbasin nodes that act as junctions should be morphed into transitions or manholes.3) No gutters should be leaving from an inlet in sag 4) All inlets on grade need to have a bypass gutter5) The Tc of a catchment needs to be less than the maximum duration in the IDF curve6) Elements that are topologically inactive will still be exported to GEOPAK. These can either be addressed in GEOPAK or deleted from the StormCAD model before export.
Once the StormCAD or Openroads SS4+ design is finished, (or at an appropriate stopping point) export to GEOPAK. A GEOPAK drainage library is created and the GEOPAK drainage project is created.
After addressing these items, here are some suggestions for opening the resulting GEOPAK Drainage database (GDF) in GEOPAK Drainage. If you are having difficulty finding the option to Export to GEOPAK, see these two articles:
How does StormCAD V8i integrate with InRoads, PowerCivil and GEOPAK?
How do I activate a GEOPAK license inside StormCAD for MicroStation?
Problems opening GEOPAK Drainage file exported from StormCAD
How does StormCAD integrate with InRoads, PowerCivil and GEOPAK?