Below Grade Steel
Below Grade Steel
(OP)
I am looking for a good solution to protecting W shapes below grade. They will be supporting a concrete pan deck cantilevered over a cliff as the foundation for a house (NOT the best idea I know!) Most will start about 8' below grade (attached to rock anchors) then eventually be out exposed to atmosphere. I was thinking epoxy coating or a spray-on bituminous coating. Any other ideas???






RE: Below Grade Steel
thread507-18982: steel protective coatings
RE: Below Grade Steel
RE: Below Grade Steel
RE: Below Grade Steel
www.SlideRuleEra.net![[idea] idea](https://www.tipmaster.com/images/idea.gif)
RE: Below Grade Steel
RE: Below Grade Steel
RE: Below Grade Steel
RE: Below Grade Steel
1. encasing the beams in concrete
2. Using a combination of active cathodic protection as well as a spray on bituminous coating.
Does anyone know of a good resource for the cathodic protection?
Thanks for all of your responses
RE: Below Grade Steel
It is paint, including bituminous coatings, that fail when the coating is damaged (corrosion begins at the spot of the damage).
www.SlideRuleEra.net![[idea] idea](https://www.tipmaster.com/images/idea.gif)
RE: Below Grade Steel
Galvanising is a lot more robust than most paints and provides cathodic protection to damaged areas, as SlideRuleEra pointed out.
I consider active CP overkill for this situation unless it is an aggressive environment.
RE: Below Grade Steel