For reinforcing steel in concrete, in seaside projects, epoxy-coated steel is always specified.
I would definitely epoxy-coat any metals in contact with concrete, before installation.
Then touch up any welds, wire ties, stirrups etc. after the cage is in place, but before pouring concrete.
You want to make sure you have 100% coverage of the steel.
Same with the angles.
Look at the forensic history of reinforced concrete and salt and you'll see why.
Or visit Alcatraz Island for a good look at what happens when the steel rusts and all the concrete just falls away.
That takes time, but it is inevitable.
I would definitely epoxy-coat any metals in contact with concrete, before installation.
Then touch up any welds, wire ties, stirrups etc. after the cage is in place, but before pouring concrete.
You want to make sure you have 100% coverage of the steel.
Same with the angles.
Look at the forensic history of reinforced concrete and salt and you'll see why.
Or visit Alcatraz Island for a good look at what happens when the steel rusts and all the concrete just falls away.
That takes time, but it is inevitable.