Chandr
Even if you took the modules that weren't to American codes out of the software you'd be left with a better product than most that are out there, particularly STAAD.
I agree with Nick35 about the graphics especially when creating slabs as it has an surface generator, you apply loads and...
Robot have a package called Section Definition which allows you to define any shape either from sticking sections from predefined databases together or by drawing free form contours and also thin walled sections.
The results can be exported in text file format so you are not limited to just...
I have used STAAD since 95 and I've had enough, way too many bugs and dodgy answers. I've turned to Robot, ts the most user friendly I've seen especially for slabs and stuff. I have just received the latest version and it has Pushover analysis in it which is a bit of a bonus. If you like...