Question 1

Should I trust vendor weight lists?

Accepted Answer

Yes if they match standards and you verify sampling on weighbridge periodically.

Question 2

Why does my plate weigh more than formula?

Accepted Answer

Actual thickness above nominal within tolerance, or oil/packaging — investigate before accusing error.

Question 3

Do hollow sections need different formulas?

Accepted Answer

Yes — use section properties or supplier tables for SHS/RHS rather than flat plate logic.