What is the mid-span (center of wood board) load bearing capacity of one 2”x12”x10’ setting on edge. I will be mounting a 1 ton chain hoist by a 2”x36” tow hook strap rated up to 3,300 lbs dead load weight capacity that will be wrapped around the center of the 2”x12”x10’. I have viewed some beam calculations ratings showing maximum center load of 7,500 lbs. Can someone please help verify? It is an existing Morton type of metal structure that has two 10’x10’ garage doors that I will attach the chain hoist to one of the 2”x12”x10’ headers.