All of our new schools have exactly what gfretwell describes (in the server room). 4x16 by 1/4" thick with a lot of threaded holes. A #4 to the main electrical room via a pipe below the slab. Every piece of eqpt has an 8 or 6 to this plate. Seems to work well. We've been using this system for about 6 or 8 years now and have very few probs.
