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A drain cover is a cover with holes (e.g. a manhole) or a grating used to cover a drain, to prevent unwanted entry of foreign objects, or injury to people or animals. It allows drainage of liquids but prevents entry from large solid objects, and thus acts as a coarse filter. A sink drain cover is a drain cover used to cover the sink drain.
This may be a simple bend of, typically around 70 degrees, at the bottom. Alternatively a downspout may lead to a sewer, a runoff water drain or a seepway to allow the water to soak into the ground through seepage. Decorative heads are sometimes added, these being low-height gargoyles.
Roman roofs used lead in conduits and drain pipes [14] and some were also covered with lead. Lead was also used for piping and for making baths. [15] Plumbing reached its early apex in ancient Rome, which saw the introduction of expansive systems of aqueducts, tile wastewater removal, and widespread use of lead pipes.
Anxiety disorders affect nearly 30% of adults at some point in their lives, with an estimated 4% of the global population currently experiencing an anxiety disorder. However, anxiety disorders are treatable, and a number of effective treatments are available. [11] Most people are able to lead normal, productive lives with some form of treatment ...
water mains, the principal underground pipe for conveying water to residential and business properties major (in the past, in English public schools) used to denote the eldest of two or more pupils with the same surname ("Bloggs major") (US: Sr.) important or significant (n.) rank between captain and lieutenant colonel in the army and marines.
Geoffrey Drain (1918–1993), British trade union leader; Gershwin A. Drain (born 1949), American federal judge; Jim Drain (born 1975), American artist; Job Henry Charles Drain (1895–1975), English recipient of the Victoria Cross; Lauren Drain (born 1985), American author; Robert D. Drain (born c. 1957), American judge; Sammy Drain (1945 ...
Drain-waste-vent system or plumbing drainage venting, pipes leading from fixtures to the outdoors; Duct (flow), used to deliver and remove air; Flue, a duct, pipe, or chimney for conveying exhaust gases from a furnace or water heater; Gas venting, a safe vent in the hydrocarbon and chemical industries; Medical ventilator, mechanical breathing ...
Backflow occurs for one of two reasons, either back pressure or back siphonage. [1]Back pressure is the result of a higher pressure in the system than in its supply, i.e. the system pressure has been increased by some means.