Login with username, password and session length. 12000 divided by 1/6 is 72,000 psi. People have been using wood as construction materials for thousands of years. var imagelinks2=new Array() So you want steel that can handle at least 72,000 psi. WOODWEB is a registered trademark of Woodweb.com. Have fun!! Thanks for the input; suggestions/questions are always welcome. KD-19 (Kiln Dried 19%) lumber will have an average moisture content somewhere around 15%. Loads must be concentrically distributed evenly over the top of the column shaft. In most cases you can go to 80 lb/sqft in isolated spots, but unless you know roughly what the soil bearing and reinforcing is for that slab you might be looking at cracking. Values do not consider combined axial and out-of-plane bending. You can use your mousewheel to scroll though all of the pictures. How much a deck can hold depends on a number of factors relating to that particular deck. //-->,