What I'm installing is a phone system, NEC DSX80 which needs to be grounded or else you get a
very noticable humm on all CO's.
This is an old brick building that was pre-cabled by another company, hard lid ceilings everywhere and alot of concrete in the halls. The electrical panel is downstairs on the opposite side of the bldng.
I know these customers won't want to pay us to tear up things so I might have to leave it in the hands of the company that cabled the place.
Thanks for the info, I don't know what I-beams are but I'll look that up and maybe that will be the solution...