【 Weak current College 】 indoor drainage-III drainage piping layout and wiring

How to lay out drainage pipe, how should the drainage pipe, for laying in the use of drainage pipe and how to maintain this section you will learn to master's content. First, the principle of the drainage pipe layout ① ò, hydraulic conditions. ② the use of safe, reliable, prevent pollution, and does not affect the health of indoor environment. ③ pipeline simple, low cost of project. ④ construction for easy installation, easy maintenance and management. 　　⑤ the area is small, attractive. 　　Also, taking into account water pipes and hot water pipes, heating ventilating pipe, gas pipe, electric lighting lines, communication lines and TV cable, layout and installation requirements. Second, the drainage pipes for drainage arrangement requested ① should be the shortest distance, pipe bends should be minimal. ② drainage pipe should be close to the displacement of the largest and most water impurities. ③ drain pipes shall be arranged in special performances will cause a fire, explosion or damaged materials, products and equipment. ④ overhead pipeline shall be arranged in the production process or who have special requirements, as well as food plant, precious commodity library, ventilation Chamber and distribution. ⑤ horizontal drainage pipe shall be arranged in the canteens, restaurants of main supplement action cooking and thermocline kitchen room, if there is no way to avoid that the protective measures to be taken. ⑥ sewage risers shall not pass through the bedroom, wards, and so on health, quiet request high room, and not near the inner wall adjacent to the bedroom. ⑦ sewer shall not pass through settlement joint, flue and air duct, and not through Flex every, unconditional must pass through, should take appropriate technical measures. ⑧ drainage shall be buried pipe layout may be subject to heavy pressure easily damage or through production equipment, special circumstances should consult with the professionals. ⑨ PVC-u drainage pipe (UPVC pipe) should avoid layout in susceptible to mechanical impact, such as when you cannot avoid, to take protective measures; at the same time avoid the near a heat source, such as cannot be avoided, and pipe surface heating temperature is greater than 60 ℃, heat-insulating measures should be taken, risers and household stove edge spacing should be not less than 0.4m. 　　PVC-u drainage pipe should set collar or fire resistant casing.　　3. drainage pipe laying of drainage pipes in General be buried, specification provides residential sewage horizontal drainage pipe should be located within this layer sets, to be laying in the next layer of inner space, its sweeping mouth should be set to this layer. 4. drainage pipe insulation and corrosion-proof and proof ① drainage piping sets on dew has requirements for buildings or parts of the body, should take measures to prevent condensation, commonly used for thermal insulation. ② metal discharge pipe anti-corrosion treatment should be carried out, the General is brushing antirust paint and paint. ③ avoid pipe plug, it should be noted: piping layout to turn into a straight line, little, close to the risers of the stool can directly access; as far as possible with inspection openings of elbow, water bends; often strengthen maintenance management.