Thanks DL for your input in reference the laminated and glued beams, I have also worked with them from time to time, but I am referring to beams built up with layers of say 2 or 3 inch material--ie a 10"by12" rectangular beam made up from 5--2"by 12" planks nailed together with arddox nails or in one case I had to use hardened steel nails (cement nails), maybe someone would like to comment