Quote:
Originally Posted by spinnaker
OK, interesting stuff being posted here! Can I pose another questions? Assuming I were to build a steel pier (with diameter of say 200-250mm), is there any advanatge or disadvantage or using a circular steel pipe v a square-section pipe?
I suspect the answer may lie somewhere in the formulae quoted above, but I'm no engineer ;-)
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I think it it will be better (in terms of deflection due to a variable load), especially if the diagonal of the cross section is aligned with S-N line.
And if the diagonal of the square pipe is bigger than diameter of the round pipe.