Unknown pipe - can someone please help me identity this?
#1
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Broke up the basement floor for a bathroom rough-in and found a thin copper pipe buried in the concrete pad about 1/2 below the surface that appears to run to the floor drain. No idea what this is or why I need it, but it kind of looks like a gas line, but that makes no sense. I'd appreciate any help. Thanks



Last edited by ray2047; 11-05-16 at 11:29 AM. Reason: Rotate first image.
#4
why don't we want the drain trap to go dry??