Patent ID: 7882856

Claim:
A combined sewer pipe apparatus for conveying sanitary effluent and storm water from sources to a treatment plant comprising: a larger diameter first sewer pipe having an interior surface forming and surrounding an interior space, said first sewer pipe carrying storm water through said interior space in contact with said interior surface; a smaller diameter second sewer pipe carrying sanitary effluent and extending through said interior space of said first sewer pipe; a positioning means attached to an exterior surface of said second sewer pipe, said positioning means extending along a length of said second sewer pipe and being in continuous form, said positioning means contacting only a portion of said interior surface of said first sewer pipe to form at least one positioning space separated from a remainder of said interior space, wherein said second sewer pipe is disposed inside of said positioning means at a predetermined position at a bottom of said interior space; and a slurry mixture contained in said at least one positioning space and having a predetermined specific gravity sufficient to maintain said second sewer pipe in said predetermined position.