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.
The word "plumber" dates from the Roman Empire. The Latin for lead is plumbum. Roman roofs used lead in conduits and drain pipes and some were also covered with lead, lead was also used for piping and for making baths. In medieval times anyone who worked with lead was referred to as a plumber as can be seen from an extract of workmen fixing a roof in Westminster Palace and were referred to as plumbers "To Gilbert de Westminster, plumber, working about the roof of the pantry of the little hall, covering it with lead, and about various defects in the roof of the little hall". Thus a person with expertise in working with lead was first known as a Plumbarius which was later shortened to plumber.
You probably don’t realize how much you have come to depend on your plumbing system on a daily basis. Running a bath, brushing your teeth, boiling water to cook vegetables or grains, running the dishwasher, washing your white clothes, flushing the toilet—the list could go on and on. Most would have difficulty going one day without a modern plumbing system. At Golden Rule Plumbing, Heating & Cooling, our plumbers have been serving our community for nearly 15 years. We offer professional plumbing services throughout the Des Moines, IA area, including installation, replacement, repair, and installation. From grease traps, sump pumps, toilets and garbage disposal units to water heaters, gas piping and bathroom remodeling, we offer a wide range of quality products and services. We offer a 100% satisfaction guarantee and we’re available 24/7 in case something goes wrong after hours. As one of the most important aspects of your home, your plumbing system should be taken care of by a professional plumber. Contact us to discuss your options.