acid rain and catchment thread

[terracore]

I talked to a guy who worked for the park installing fencing and he commented that the iron in the steel fence posts interacts with the galvanized fencing like an anode and cathode (I don't remember which one was which) and the acid rain acts as an electrolyte, the combination creates a weak electrolysis which causes the galvanizing material to come off the fence. He recommended using only galvanized T-posts where there is acid rain to greatly slow the process down. I imagine the guardrail anchors are also galvanized, but they are probably much deeper than a T-post and could be reaching something in the ground similar to an "earth battery" that completes the anode / cathode / electrolyte process when there is acid rain.

ETA: CLARITY