Building Utilities Plumbing 3 -Water Distribution System, Cold Water Distribution System, Hot Water Distribution System, Fire Protection System

Water Hammer Back Siphonage Expansion / Contraction Friction Head Loss - Answer-Defects in Water Distribution Systems: Friction Head Loss - Answer-greater ____ with longer pipes, small diameter pipes, and a high number of valves of fittings; The loss in rate of flow due to friction between water and the walls of the pipe Friction Head Loss - Answer-defect: occurs when liquid flowing makes contact with pipe enclosures, reducing the speed of flow; greater in longer pipes and smaller diameter pipes Expansion / Contraction - Answer-Pipes expand and contract due to continuous changes in temperature; An air space should be provided to allow for breathing room Water Hammer - Answer-a knocking in the pipes caused when faucets in the lower levels are shut off abruptly or automatically Water Hammer - Answer-the force exerted by the decelerating water causes the pipes to shake and rattle Back Siphonage - Answer-the flowing back of used, contaminated or polluted water from a plumbing fixture or vessel into a water supply pipe due to a negative pressure in such pipe Back Flow - Answer-the flow of water or other liquids, ,mixtures, or substances into the distributing pipes of a potable supply of water to a tank, plumbing fixture, or other device and the flood level rim of the receptacle. Indirect Pressure Distribution