This must can be helpful for your life if you master the method to calculate steel weight:
https://machinemfg.com/steel-weight-calculation-formula/
No one I've needed myself, but I guess it could be useful for some.
Surface area x thickness (volume) x weight of 1m3 of the material (steel is 7752kg)
My mind goes back to my C & G exam, Advanced MMA.
The calculation question was work out the weight of a digger jib (drawing supplied)
This was part of my 7 year apprenticeship.
Now its multiple choice, tick one of three boxes, and you have to be really unlucky not to score 33%
Paul G
Steel cutting can use metal laser cutting machine