kurt Posted July 12, 2007 Report Share Posted July 12, 2007 Looked @ something I don't often see today; a 60's ranch on a slab. The copper water service enters the house in a central mechanical closet, supplies the water heater, and then goes back into the slab to run to the baths & kitchen. I'm not a big fan of copper in concrete, am aware of the sleeve requirement in new construction, etc., but don't know how serious this one may, or may not be. It's all "L" grade copper, heavy stuff. Is this a likely problem? Any of you guys that look @ slab construction w/similar conditions have an opinion? Quote Link to comment Share on other sites More sharing options...
chicago Posted July 12, 2007 Report Share Posted July 12, 2007 I have that at my place here in Harwood heights Kurt,and there is no sign of a problem. 1957-same year I was born.It feeds the bar and bathroom in the basement. Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted July 13, 2007 Report Share Posted July 13, 2007 I doubt it's a problem but it's supposed to be K. At some point the reactivity is neutralized and the main concern becomes slab movement. If it's L where's the sweat joint? Quote Link to comment Share on other sites More sharing options...
StevenT Posted July 13, 2007 Report Share Posted July 13, 2007 I agree. I would be more concerned with slab movement. Quote Link to comment Share on other sites More sharing options...
kurt Posted July 13, 2007 Author Report Share Posted July 13, 2007 Thanks all. I'm a doof. I'm now blanking on which has the blue stamping on the side; K or L? Who can tell me so I don't have to run over to Le Depot de Maison to find out...... No slab movement, no nothing to even suggest a problem. It's just one of those things I never see & it made me wonder. Quote Link to comment Share on other sites More sharing options...
Brandon Whitmore Posted July 13, 2007 Report Share Posted July 13, 2007 I believe blue is type L Quote Link to comment Share on other sites More sharing options...
Brandon Whitmore Posted July 13, 2007 Report Share Posted July 13, 2007 http://www.monotube.com/co_gilmoursuppl ... -specs.asp shows the color coding of the copper pipe Quote Link to comment Share on other sites More sharing options...
chicago Posted July 13, 2007 Report Share Posted July 13, 2007 Never considered copper gauge. Thanks for the link. Quote Link to comment Share on other sites More sharing options...
Chad Fabry Posted July 13, 2007 Report Share Posted July 13, 2007 K is soft. L isn't. In my neck of the woods only K is allowed to be buried or used for gas. Quote Link to comment Share on other sites More sharing options...
kurt Posted July 13, 2007 Author Report Share Posted July 13, 2007 I thought K & L both came in hard or soft(?)... The stuff I saw had the blue color code, so it was L. Brandon, thanks for the chart.... Quote Link to comment Share on other sites More sharing options...
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