Carpet on the floor of the data center for 3 mainframes? Who is the lunatic that allowed such design?
To be fair, my home computer room uses carpet tiles. Ones that are anti-static and were being chucked out, unused by one of my previous employers.
 Doesn't everyone have one of these? The aircon in it is great for when we come back from walking the dog in 32C heat.. If only it wasn't also used as a technology-I-have-known junk pile - we might have been able to put a bed in there too. Although I have come up with a Cunning Plan TM to have a duct installed from that room to our bedroom (shares a common wall) with a built-in fan so that we can blow cold air at the ceiling fan..
 Just had all our area carpeted with anti-static carpet tiles. New director comes in, doesn't like the colour , has them all taken up and replaced. A number of us took as many as we wanted. I still have quite a few in the garage.
 blah, blah, PanTone, blah blah, HQ regulations, blah blah. Summarised as "I don't like them and I control the budget".