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.
These 10 facts about space will blow your mind. A pipefitter is a worker who is responsible for the installation and maintenance of high pressure mechanical piping systems. These systems are typically used for moving liquids and gases in buildings, marine vessels, aircraft, and industrial process plants.nlike a plumber, a pipefitter can fabricate pipes, as well as install and maintain them. Some pipefitters are are specially trained to work in distilleries and breweries. A person who wants to become a pipefitter must complete all classroom training requirements, which includes welding.