10-05-2009, 09:20 PM
My framework is built around 1x4's with 1x4 risers and cleats and 5/8" & 3/4" ply for subroadbed. I also use 1x4 legs, but have some 2x4's anchored to the floor in critical areas which need to be "rock steady". The grid work is anchored to the walls using "L" cleats. This layout isn't going anywhere..... 
Gus (LC&P).