I AM LOOKING FOR A CHART OR SOMETHING THAT CAN GIVE ME SOME IDEA OF THE LOAD AN I-BEAM COULD HANDLE OVER DIFFERENT SPANS. A CHART THAT SHOWS STANDARD I-BEAMS FROM SPANS IN 5 OR 10 FOOT SPACINGS. FOR 12" BY 31.8,35, 40.8,AND 50 POUND PER FOOT BEAMS. THIS IS JUST FOR A REFERANCE NOT FOR A...