Posted 10/16/2007 12:07 (#220477 - in reply to #220450) Subject: Re: Concrete ?
Most comtractors will screet the sand/gravel with a 2x6 and then pack it with a vibrating packer this will give you a good 6 inches maybe even a little more depending on your fill material I would not go any less than that for a shop floor. Dennis SEND