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There is a pipe that runs from one wall to our boiler room in the center of the room along the floor. It seems to be the return pipe for our steam heating system. My contractor recommends putting the pipe underneath the slab since it will no longer be a trip hazard. I have two concerns: 1) that water will condense and gather in the pipe since it will be “below grade” as compared to the boiler itself, and 2) that there will be no way to rid the system of excess water, since this pipe also has a valve for this purpose.

What are your thoughts? Anyone had this problem in the past?