The thicknesses of the water pipe and tube walls can vary. Pipe wall thickness is denoted by various schedules or for large bore polyethylene pipe in the UK by the Standard Dimension Ratio (SDR), defined as the ratio of the pipe diameter to its wall thickness. Pipe wall thickness increases with schedule, and is available in schedules 20, 40, 80, and higher in special cases. The schedule is largely determined by the operating pressure of the system, with higher pressures commanding greater thickness. Copper tubing is available in four wall thicknesses: type DWV (thinnest wall; only allowed as drain pipe per UPC), type 'M' (thin; typically only allowed as drain pipe by IPC code), type 'L' (thicker, standard duty for water lines and water service), and type 'K' (thickest, typically used underground between the main and the meter). Because piping and tubing are commodities, having a greater wall thickness implies higher initial cost. Thicker walled pipe generally implies greater durability and higher pressure tolerances.
plumbing, piping systems inside buildings for water supply and sewage. The Romans had a highly developed plumbing system; water was brought to Rome by aqueducts and distributed to homes in lead pipes—hence the name plumbing from the Latin word plumbum for lead. During the Middle Ages, however, plumbing became almost nonexistent. In fact, London's first water system after the Middle Ages (c.1515) consisted partly of the rehabilitated Roman system; the rest was patterned after it. Modern plumbing began in the early 1800s, when steam engines became capable of supplying water under pressure and cheap cast iron pipes could be supplied to carry it. The common materials used today in water supply pipes are steel, copper, brass, plastic, and lead. Plumbing for sewage is made of cast iron, steel, asbestos cement, copper, and plastic. Water pressure is usually insufficient to supply the needs of tall apartment and office buildings; in such cases storage tanks are installed on the roof, into which a pump lifts water. The water then flows through the piping system of the building by gravity. Smaller buildings may have a pneumatic tank for the same purpose. The tank is partly filled with air, which is compressed when water is pumped in so that it will force water through the pipes. Sewage and drain systems typically have a trap, often a loop-shaped section of pipe, to seal off vapors in the pipes from the rest of the building. Vent pipes lead these vapors to the outside of the building; they also eliminate any suction in the piping and thus prevent the siphoning of water from traps when a nearby fixture discharges. In the 1970s and 80s flexible polybutylene plumbing was widely installed in standard and mobile homes. When unprecedented numbers of these plastic pipes began leaking because of exposure to chlorine and other chemicals in tap water, homeowners brought class-action lawsuits against the manufacturers, which were settled in 1995 for hundreds of millions of dollars.
Wooden pipes were used in London and elsewhere during the 16th and 17th centuries. The pipes were hollowed-out logs, which were tapered at the end with a small hole in which the water would pass through. The multiple pipes were then sealed together with hot animal fat. They were often used in Montreal and Boston in the 1800s, and built-up wooden tubes were widely used in the USA during the 20th century. These pipes, used in place of corrugated iron or reinforced concrete pipes, were made of sections cut from short lengths of wood. Locking of adjacent rings with hardwood dowel pins produced a flexible structure. About 100,000 feet of these wooden pipes were installed during WW2 in drainage culverts, storm sewers and conduits, under highways and at army camps, naval stations, airfields and ordnance plants.
You may second guess that bacon grease going down the drain, but it seems a lot easier than trying to clean it out with a paper towel, right? Plumbers beg of you to have some patience, and instead of pouring it down the kitchen sink drain, allow it to harden, scrape it into a garbage can and wipe out the pan with the paper towel before washing. It will save you money in the long run. Here’s how to unclog a standard kitchen sink drain.
When something goes wrong with your plumbing system, speed is essential. The faster you address the problem, the better off you and your wallet will be. Water can quickly cause thousands of dollars in damage. Leaks can soak floors, ceilings and foundations, causing rot and mold that may make your home uninhabitable. Get a direct quote from a professional plumber. Continue Reading
Plumbers may not go out of their way to let you know that a toilet or sink can be moved. But if you’ve been working with them on a renovation, and they tell you something can’t be transferred to a new space, ask them to explain to you in detail why not. Speaking of things people don’t want to tell you, here are 10 things your neighbor isn’t being up-front about.
Average Americans work well into their 60s, so workers might as well have a job that’s enjoyable and a career that's fulfilling. A job with a low stress level, good work-life balance and solid prospects to improve, get promoted and earn a higher salary would make many employees happy. Here's how Plumbers job satisfaction is rated in terms of upward mobility, stress level and flexibility. Click Here