Biggskip - what kind of flooring is that? Concrete? I would use the horse stall mats on either side - where your weights will go when you're deadlifting/rowing, etc and stand on the most firm platform you can which is why people build platforms with plywood in the middle - probably doesn't matter at lighter weights but you will notice that slight give from the mats at higher weights. Nice rack btw!
7/13/12 at 6:44pm