My sewer cad mode is have large dia sewers whats the reson behind this SEWER FINAL CALCULATIONV_03.stsw
Are you doing constraint based design , with analysis type - design in calculation option?
Please note that the automated design feature has to satisfy multiple constraints like cover, capacity, velocity, slope, section size limit etc..
Read more about order of constrained based design priorities, for your reference.
Order of constrained based design priorities for StormCAD (GVF-Rational) and SewerCAD (GVF-Convex)
As mentioned by Larry you may upload database file as required.
Regards,
Sushma Choure
Bentley Technical Suppport