Storm water and Septic System Exercises Exam Latest Updated Graded A+ New Update

Storm water and Septic System Exercises Exam Latest Updated Graded A+ New Update Subsoil water - Answer - Water collected and carried to a storm sewer. Storm drain pipe - Answer - A drain pipe not allowed to discharge factory or domestic waste. Sanitary drainage system - Answer - A system that must discharge into a public sewer system for public health reasons. Major outfall - Answer - A pipe or channel outside a building which conveys storm water from the roof or gutter drains. Storm sewer placement - Answer - Storm sewers are usually placed under the road on wide roads. Channeling sewage - Answer - Carrying rainfall runoff in open ditches. Roof area consideration - Answer - Add 50% of the wall area above the roof when sizing rainwater piping. Building wall area exposure - Answer - One-half of the gross area of the side of a building wall exposed to rain is considered. French drains - Answer - A stormwater drainage system designed to keep stormwater away from building foundations. Conductor - Answer - A pipe installed to drain water from the roof into a storm roof catchment. Septic tank distance - Answer - Construction of a septic tank should be located 20 meters away from the source of water supply. Sedimentation chamber - Answer - A compartment in the septic tank usually extended above the surface of the ground. Retention period - Answer - The time for which suspended matters in a septic tank would settle and stabilize is 24 hours. Anaerobic bacteria - Answer - Microorganisms that digest sewage in a septic tank. Septic tank elevation - Answer - The surface of the septic tank should be elevated at least 10 cm above the surface of the ground. Sludge - Answer - The non-soluble materials which is the end product after biological action of bacteria in waste and which settles at the bottom of the septic tank. Septic tank distance from water supply - Answer - 7.1 m is the distance a septic tank should be constructed away from the water supply source to prevent contamination. Freeboard - Answer - The space between the liquid level and the top inside top cover of septic tank. Distribution box - Answer - A small concrete receptacle between the septic tank and the drain field which accepts its drain tiles extends into the leaching field from tank to distribute the flow of sewage equally to all drain lines. Class I standpipe system - Answer - To supply water for use by trained personnel. Class III standpipe system - Answer - Requires 1½ in. (40 mm) hose stations for trained personnel and 2½ in. (65 mm) hose connections for fire department use.