Posted Jan 2, 2021, 5:49 AM
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Join Date: Jan 2014
Posts: 4,093
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They wanted vertical walls for the dike, I assume for a smaller footprint, so the fencing is required.
The rusted sections would be made of Cor-ten steel, designed to form a stable oxide layer to protect the steel instead of using galvanization. Perhaps they are just trialing a few sections as a pilot project.
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