I am about to embark on a repipe of old cast iron pipe that is about
90+ years old but as I examine and design I find both hot and cold pipes that run straight up into the attic which has nothing but bedrooms in it, the pipes of course end and are capped at the top. My question is were these pipes installed for possible furture growth of having water upstairs or are they for water pressure, flow or serve some other engineering function?- posted
20 years ago