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.
The exhaust gas that collects in the headers moves on to a straight pipe known as a head pipe. The head pipe is the first section of exhaust piping and connects your headers to the rest of your exhaust system. The head pipe is also where you'll find the catalytic converter, the next step in your exhaust system.ufflers. If your exhaust system ended at the catalytic converter, your vehicle would be obnoxiously loud and noisy-far from the high-performance growl you know and love. As their name implies, mufflers reduce the noise coming out of your exhaust to less-than-deafening levels.