general modelling

Hi all

I'm fairly new to Openbuildings connect version 5 and I was wondering what the general rule is with modelling, if you could provide feedback that would be great.

is it best to model your steel structure at 0,0,0 and square ACS to the view, then if you want to share the model with the mechanical design team, create a reference of your steel model and move it to the correct world co-ordinates.

I've modeled a steel structure in real world location but have trouble creating the rules, some members appear, some don't, I think the model is located outside the desired working envelope of OBD and doesn't like it, as I then have moved the model to 0,0 and the 2D rule of the platform output looks ok.

I've also found when you model columns that are in correct world orientation when you come to modify the ends the column they seem to rotate, obviously it doesn't happen if the column is modeled on a square ACS axis and modified

thanks 

steve