Does anyone have a good system to set-up CADD folders, if you have specific ideas for Industrial Engineering that would be great.  Any help would be great. Thanx Nick

By project number?

I work with a lot of airports, so my drawings are set up by airport, by project number for the most part.  But I also have to deal with a lot of tenants and their projects... so each airport has a tenants folder as well with each tenant having a folder in there as well.  Those individual tenant folders are broken down by project.
I have a separate folder for XREFs that are frequently used.  Others for standard base files since they frequently change.  I have Utility Atlas folders...
What it boils down to is how you want to organize your work.  We're all going to be somewhat the same only to a point... then things get quite different depending on disipline.
Dave.