A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular cross-section, used mainly to convey substances which can flow ? liquids and gases (fluids), slurries, powders and masses of small solids.
Many industrial and government standards exist for the production of pipe and tubing.The term "tube" is also commonly applied to non-cylindrical sections, i.e., square or rectangular tubing.
In general, "pipe" is the more common term in most of the world, whereas "tube" is more widely used in the United States. Both "pipe" and "tube" imply a level of rigidity and permanence, whereas a hose (or hosepipe) is usually portable and flexible.Pipe assemblies are almost always constructed with the use of fittings such as elbows, tees, and so on, while tube may be formed or bent into custom configurations.
In contrast, during the holiday season, or in the case of sudden death during the night, residents will be able to call the emergency water and sanitation and ask to come to the block where the accident occurred.
In some situations it may become necessary to purify the basement flooded by the sewage system before the tenants will be able again to enter it.
Sewer block can be cleaned using methods commonly used to clean drains, such as.
Early hot water systems were used in Russia for central heating of the Summer Palace (1710?1714) of Peter the Great in Saint Petersburg.Slightly later, in 1716, came the first use of water in Sweden to distribute heating in buildings. M?rten Triewald, a Swedish engineer, used this method for a greenhouse at Newcastle upon Tyne. Jean Simon Bonnemain (1743?1830), a French architect, introduced the technique to industry on a cooperative, at Château du P?cq, near Paris. However, these scattered attempts were isolated and mainly confined in their application to greenhouses.
Tredgold originally dismissed its use as impractical, but changed his mind in 1836, when the technology went into a phase of rapid development. Early systems had used low pressure water systems, which required very large pipes.
One of the first modern hot water central heating systems to remedy this deficiency were installed by Angier March Perkins in London in the 1830s.
A crucial invention to make the system viable was the thread screwed joint, that allowed the joint between the pipes to bear a similar pressure to the pipe itself.He also separated the boiler from the heat source to reduce the risk of explosion. The first unit was installed in the home of Governor of the Bank of England John Horsley Palmer so that he could grow grapes in England's cold climate. Źródło: https://en.wikipedia.org/wiki/Central_heating#Hot_water.