Blueprints
I didn't see anything on blueprints, so I'll ask here. Are there any resources out there to help me come up with clear blueprints for a building in a game? If it helps, it will be a warehouse with shower stalls and bathroom stalls and a second level catwalk circling the main warehouse area. I'm using a Mac, so I can't use just any program. Help would be greatly appreciated and I would give credit where it is due, of course.

I found an interesting website that allows you to make blueprints and floor plans. If you want to illustrate the layout of a building in your game you can make your own blueprints at this URL.
http://www.smallblueprinter.com/sbp.html