what is the meaning of soil waste pipe
A soil pipe is a PVC or cast iron pipe used in plumbing installations to remove soiled or contaminated water from toilets. Soil pipes differ from normal waste water removal pipes in that they are generally of a larger diameter and are designed specifically to remove solid waste from toilets.he average inside diameter of a domestic soil pipe is around four inches (about 10 cm) and that of a typical waste water pipe is 1Â½ inches (about 3.8 cm).