Well not an analouge with a Morgan chassis at all.
I can report that a major North Sea production platform installed in 1987 had a major change out of galvanised steel gratings on walkways and stair treads in 2005 that was 18 years later as the steel gratings were physically breaking when a few guys were walking over them.
The steel angle iron holding the gratings that had been painted had lost some paint coating but in no case did the company have to replace the metal supports holding the grating. They were given a quick local blast with a pencil blaster and a few coats of paint before the new gratings were installed.
These gratings were between 40ft and 60 ft above sea level.
