Cracks in the web, flange, or shear connection of a beam usually weld. Bent or work-hardened beams that have been pushed past yield often need replacing because the metal isn’t itself anymore. Corrosion that has eaten through enough section to compromise the load path usually needs replacement of the affected length, not a weld over.
We give you the honest call. Repairs save money where they can, replacements protect the building when they have to. We tell you which side of the line your situation falls on before we strike an arc.