A thick concrete slab in a power plant lacked the internal steel reinforcement to withstand the weight of service trucks. To support the slab, carbon fabric strips were applied to the underside of the slab. Previously, the slab could withstand a maximum single wheel load of 1500lbs. After the repair, the slab could withstand 6500lbs.
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So, the fumes from galvanized steel can really mess you up… How much damage they do is going to be dependant on a number of factors, but these risks are comparativly easy to manage with the right tools and a little know-how.
Overall, you’ll want to reduce/limit the quantity of fumes coming off your weldment, and maximize the amount of protection you’re offering yourself as well…
Here are a few links:
AWS Page on “Metal Fume Fever”
https://www.aws.org/technical/facts/FACT-25.pdf
OSHA Webpage:
https://www.osha.gov/doc/outreachtraining/htmlfiles/weldhlth.html
Wikipedia on “Metal Fume Fever”
https://en.wikipedia.org/wiki/Metal_fume_fever
3M Respirator: