Ref: https://communities.bentley.com/products/hydraulics___hydrology/f/haestad-hydraulics-and-hydrology-forum/156541/time-of-concentration_stormcad
Reference to the post in the above link; need just to confirm they way that StormCAD considers the time of concentration and accordingly the intensity from the IDF curve, from the above post the "system flow time" is not added to the "entry time", then Jesse added ( "this is unrelated unless the conduits in your model are considered to be part of the "catchment" area ).
In some manual they mention that the summation of the entry time and the travel time is the total of Time of concentration "TC" that will reflecting the intensity
That required more iteration, also is that realistic in rational methods? or since the catchments has no piping system and they are just connected to the inlets so we just consider the entry time?
I am looking for more interpretation to the screenshot; when that can be used? and is the Time of concentration in the StormCAD just based on the entry time "to the catchment's outflow/discharge point - outflow node" and the travel time is not contributing with the Intensity calculation.
Regards,
Mohamad Azzam