I am current working on an interface from a CAD system to CAESAR II. In our CAD system Z is usually up, and we currently transfer data with the Z-Axis Up flag set, so that the model is in the same coordinate system in both programs.

We have had a request to use Y-Axis up in the CAESAR II side, and rotate the cooordinate values as appropriate.

I would be very interested to know whether nearly all stress engineers prefer to use Y-up, or whether we should support both options in the interface. It is perfectly feasible to support both, but it does add to the complexity of the documentation and testing...

What do you think?