To understand what a slipped, or herniated, disc is, you have to understand how the intervertebral discs work in your spine. Intervertebral discs are natural shock absorbers between the stacked vertebrae. These discs have two main components, an outer fibro-elastic shell and an inner, gelatinous core.
Drain-waste-vent (DWV) pipes carry waste and water out of the house without gurgles or fumes. Never install or replace a DWV pipe without consulting a building inspector. These pipes must be installed according to precise specifications. Drainpipes. The centerpiece of a DWV system is the main stack, usually a pipe 3 or 4 inches in diameter that runs straight up through the roof. A secondary stack, perhaps 2 or 3 inches in diameter, serves a branch of the system.
We will look at the following types of plumbing materials used in piping for waste lines, water supply pipes, and natural gas supply: Cast iron for plumbing waste lines. PVC (Poly0Vinyl Chloride) for plumbing waste lines. Chromed brass for plumbing waste lines. Chromed copper for water supply lines.