drainage calculations

Question

I have been asked to produce drainage calculations for my stormcad model. The model includes catchment areas so Q=CiA and catch basins horizontal layouts to calculate spread, capture, and bypass flows. Does anyone have a report, workflow, or idea on how I can create such a report? StormCAD Connect 
 Thanks.

Yashodhan Joshi · Answer

Hello Brian, 
 You can directly get the runoff from every catchment in StormCAD after analysis. If you need this information in a report you can generate the catchment report under Report > Gravity Tables. You can also simply copy the catchment flextable and paste into your report if that's what you are looking for. 
 For catch-basins, you can get the spread, captured flow and bypassed flows by adding these columns in the catch-basin flextable. See the below article for customizing the flextables to getting necessary result data; 
 Customizing FlexTables for viewing and reporting data 
 You can also look at creating a custom report right out of StormCAD in which you can choose which tables, graphs, profiles can be included in your report. See this article which has details about this: Creating Custom Reports 
 Hope this helps.

Jesse Dringoli · Answer

To add to Yashodhan's answer - since you're specifically looking for a report on catchment calculations (and maybe not the overall flow), I would recommend including fields in your Flextable or custom report like these (assuming you only have Rational flows from catchments): 
 
 Catchments 
 
 Catchment CA (this is the Rational C times the area) 
 Catchment Flow Time (the Tc) 
 Catchment Intensity (from the flow time and IDF curve) 
 Catchment Rational Flow (the resulting Q=CIA calculation - note this article on CFS vs acre-in/hr)

Catchbasins, manholes, conduits, channels
 
 System CA (total upstream contributing area; C's times the areas) 
 System Flow Time (controlling flow time that is looked up on the IDF curve for the Q=CIA calculation - see this and this ) 
 System Intensity (from the flow time and IDF curve) 
 System Rational Flow (the resulting Q=CIA calculation for contributing Rational flows)