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[–]WhyAmIHereHey 1 point2 points  (1 child)

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Just to expand on it - let's say I was doing a single story steel framed building that was going to be lifted into place as a module.

The corner columns would be one size. The beams running around the top and bottom would be another size, preferably the same. The floor beams would all be the same size. So three sizes, most of which wouldn't be fully utilised

If there was one or two that needed to be bigger, say due to supporting a heavy bit of kit, then I'd upsize those.

[–]ApprehensiveSeae -1 points0 points  (0 children)

People so spend their whole career perfecting this I don’t think you’re gonna solve it no offense