Quote:
Originally posted by CaptainCrunch+Feb 4 2005, 04:31 PM--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (CaptainCrunch @ Feb 4 2005, 04:31 PM)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-Tron_fdc@Feb 4 2005, 04:28 PM
Working in the metal industry (albeit not in the Structural Steel side) I would assume that bridges would be built out of some type of corrosion resistant Stainless Steel. You would think something like that would come up when engineering one of the main structural supports of a bridge, right?
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Corrosion controlled stainless steel only works as well as the quality control behind its production.
So I'm not sure that its a factor.
But I keep going back to the thought that it would take thousands of gallons of pee to get enough Uric Acid to create the reaction needed to destroy the bridge structure.
Unless Ammonia damages Steel? [/b][/quote]
It depends on the grade it is ordered in. You can order a cheap stainless steel for much less than a high grade, certified steel alloy. I'm talking steel castings (different than structural I-beam or reinforcing bar) but the codes are quite similar.
Ammonia and different types of acids DEFINATELY break down steels. We use it whenever we "etch" or "polish" samples (microscopic analysis of metallic grain structures). Not sure about somebody's whizz though....I have no idea what's in that!!