Most buses only weld a few points where the steel is thicker than 1/8th.
Welds break when flexed. Rivets take the movement, and stay strong.
Just look at the way your bus is built, and go from there. Every weld on my two buses are broken from fatigue. The rivets are still holding.
If the galvanized coating is not properly removed before welding, it becomes a contaminant in the weld, causing a weak weld. Much the same as rust.
Originally Posted by Lawrence_Brown
And by welding all I really mean is fabricating. I just meant if you have tools you can basically do whatever you want with the bus
You bet, that's the spirit.