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3

You are probably quite far from over-specified, if you have significant deflection from walking around. Such are the breaks of self-taught structural engineering, particularly if you don't use the resources of formal structural engineering in your self-teaching. That which will stand up, and that which will stand up without unacceptable deflection from ...


1

I get the impression that the "wobbling" you describe is mostly horizontal. The explanation is fairly simple. Steel is elastic, and therefore requires diagonal bracing to attain rigidity. If you look at the height of your small diagonal braces relative to the height of your corner posts, you can see that they're undersized. I'd shoot for diagonal bracing ...


2

So your issue is one of "deflection", which is resulting from the h-beam joists spanning too far for your liking. The fix would be to determine the deflection you want and then to make sure there are enough cross beams supported by posts that will effectively reduce the span of the original h-beam joists. By placing a single cross beam across the ...



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