[SML] GAC Quandary

[Nigel Worsley]

This document has lots of useful info
https://www.tatasteelconstruction.com/static_files/Tata%20Steel/content/Brands/SAB/English/resources/White%20rust%20on%20galvanized%20and%20galvanized%20pre-painted%20steel.pdf

In particular:
"White rust is a complex, hydrated zinc carbonate/zinc hydroxide. It
is a corrosion
product of zinc formed under certain specific conditions of exposure."

"Because of the large volume of white rust often apparent, it
frequently gives the misleading impression of extensive corrosion.
However, in the vast majority of cases,
white rust does not indicate serious degradation of the zinc coating
nor does it necessarily imply any likely reduction in the expected
life of the product. "

Sounds like it is fine, but I am not a rigger!

Nigel Worsley