Supposed in builiding contruction, the beam span is 12 meters compared to 6 meters. Would it make the beam size (and column size) twice in the longer 12 meters span given the same loading? Is there a law of physics that says the sizes are proportional to the span? Or is it algorithmic or nonlinear? Don't worry. I'm not going to construct the builiding myself, of course. Just wondering how the beam depth would increase if the span requirement is greater. If you have any formula to give an idea what is the relationship, do let me know.. thanks a lot.