On May 17, 8:43*pm, mm wrote:
On Sun, 17 May 2009 20:33:40 -0400, "

wrote:
Big problem in Florida - lots of buildings with balconies have had to
rework the concrete. *Rebar rusted, expanded and cracked the concrete.

Haven't they been using rebar for 50 or 100 years? *Did something
change so that it rusts now?

No, you've been sleeping or in a coma. It's always rusted.

R