THere is a bit of leeway, depending on how much carbon you use. Suggest you get Gordon's book, "Why we don't fall through the floor" and it's succesor, which has all the beam sizing info you need in the appendix. As a guide, Vis beams are 300 high, harry beams are 200.
rob
wrote:
I am trying to draw some plans up and I don't know how big to draw the crossbeams. I was wondering if someone could give me a simple explanation on how to calculate that, or at least how to approximate it. I have a bunch of different ideas, but they max out at a ww hull, fully loaded, of about 4000 lbs, and a beam of 22' or so.
I am guessing at about 6" high, just for drawing purposes, but it could change things if I am underestimating too much.Thanks,- GardnerPasadena, MD
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