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Covington KY's Only Worries (Must be Nice)

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[quote]QUOTE: Originally posted by solzrules AntiGates - There is a big difference between a parking garage and a RR bridge. One is subjected to massive puddles of water laden with road salt and the other isn't. It isn't rust that causes the concrete to de-laminate, it is the salt. Salt weakens concrete over time, to say nothing about what it does to metal rebar. Modern parking garages, and in fact all road bridges, are constructed using PVC coated rebar (usually they are green in color). Even the tie wire used to tie up the rebars is PVC coated. This minimizes the affect of salt on the metal so the concrete will retain its strength longer, but over time a continual saturation with road salt will still cause the concrete to de-laminate. That is also why roads and parking structures last longer in the south then they do in the north - no harsh winters (and road salt) in Florida. As for the mayor - Only a city enamored in the bliss of utpoia could possibly worry about this. Flaking paint is going to cause a chemical dump? How is that not using scare tactics? I wonder what study he is quoting from, or what qualified city inspector decided that was the scenario to be afraid of. The Parks Department? [/quote] Yes, salt certainly will compound the problem. no question about that. However, an absence of salt does not eliminate the problem entirely either. And yes, the MUCH MILDER WINTERS IN THE SOUTH bring far fewer freeze thaw cycles per winter than in the great white north. Prolly why they don''t have to use road salt down in dixie? (bet there is a connection in there smewheres) Thanks for treating me like a complete moron talking out my hat, (again) i love it when folks try to imply that. And you know what? Were it not for the fact that professional engineers whose knowledge I had a great deal of respect for had not already "brainwashed" me to the contrary, I might capitulate. Sorry though, maybe another day. Which one of CSX's hundred year old bridges are you claiming was built with PVC coated rebar in the foundation?
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