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EXAM INATION 1001.Relief vent - a pipe or shaft to convey foul air from a plumbing fixture or aroom to the outer air. True or False2.Plumbing, system of piping that carries water out of a building and toprotect public health. 3.Wye - a hose connection with two-gated outlets permitting twoconnections of the same or smaller coupling diameter to be taken from asingle supply line.4.Sewage system - includes all the pipings with in public or private premiseswhich convey sewage or other liquid wastes to a legal point of disposalbut does not include the mains of a public sewer system or a publicsewage treatment or disposal plant.5.Yoke vent - is a pipe installed to vent a fixture trap and which connectswith the vent system above the fixture served or terminates in the open air.6.Soil stock pipe - a vertical soil pipe conveying fecal matter andwastewater.7.Soil pipe - any pipe, which conveys water closet, urinal or fixtures havingsimilar functions, with or without the discharge from other fixtures to thebuilding drain or building sewer.True or False8.Welded joint - a pipe joint obtained by joining metal parts with metallicmixtures or alloys which melt at temperature below 427 degreescentigrade and above 149 degrees centigrade.9.Reverse flow - the flow of water or other liquids, mixtures or substancesinto the distributing pipes of a potable supply of water from any sourceother than from its intended source.10.Finishing - the installation of all piping and fittings parts of the plumbingsystem, which can complete prior to the installation of fixtures andaccessories. These include sanitary and storm drainage, tap, hot andchilled water supplies, gas piping and the necessary fixture supports.11.Backflow - occurs due to an increase reverse pressure above the supplypressure. This maybe due to pumps, boilers, gravity or other sources ofpressure.True or False12.Cesspool - a non-watertight lined excavation in the ground which receivesthe discharge of a sanitary drainage system or part thereof, designed toretain the organic matter and solids discharging therefrom, but permittingthe liquid to seep through the bottom and sides of the cesspool.13.Plumbing codes to provide unsanitary facilities required by localgovernment authorities responsible for establishing regulations.