Water supply and drainage piping equipment installation technology delivery of a project overview: Liaocheng City, the second people's hospital surgical ward building, designed by the Shandong Provincial Architectural Design Institute, the main body of the 11-storey, local 12-storey, building area of 14443m2, frame structure; location in Liaocheng City, the second people's hospital. Installation works include electrical, water supply and drainage and air-conditioning three divisions, the project volume is large and specialized complex. Water supply and drainage engineering division mainly consists of water supply system, hot water system, drainage system, fire hydrant water system, sprinkler water system and supply and maintenance of attraction piping and other components. Second, the quality requirements: pass rate of 100%; good rate of 90% Third, the project duration: November 25, 2001 ~ June 3, 2003, 580 days Fourth, the technical basis: 1, "Unified Standard for Quality Inspection and Evaluation of Construction and Installation Projects" GB50300-20012, "Construction and Installation Worker Safety Technical Regulations" 3, "Safety Technical Regulations for the Use of Construction Machinery JBJ33-864, "Safety Technical Specification for Temporary Use of Electricity at Construction Sites" JGJ46-885, "Safety Inspection Standards for Building Construction" JGJ59-996, "Code for Quality Acceptance of Construction of Building Water Supply, Drainage and Heating Works" GB50242-20027, "Code for Construction and Acceptance of Water Supply and Drainage Pipeline Works" GB50268-998, "Liaocheng City Construction Industry Safety Civilization Supervision Provisional Regulations" 9, design drawings and related drawings Q&A records 10, other relevant technical specifications, standards V, construction personnel arrangements ① site at any time to ensure that the post: plumber, 1 person; strong workers, 1 person. ② can be transferred to the site at any time to participate in the construction of: welding 2 people; pipeline, 5 people; strong workers, 2 people; mechanics, 1 person; painters, 3 people; pliers, 2 people. ③ The number of people required when the site construction tasks at most: 3 welders; pipeline workers, 7 people; strong workers, 3 people; mechanics, 3 people; painters, 4 people; pliers, 4 people. Sixth, construction equipment, measuring devices plan ① welding machine, 1; ② drill, 1; ③ hammer, 2; ④ electric socket, 1; ⑤ drill, 1; ⑥ cutting machine, 1; ⑦ grinder, 2; ⑧ vise, 1. ① magnetic wire drop, 1; ② metal tape measure (5 meters), 2; ③ level, 2; ④ pressure gauge, 1; ⑤ micrometer, 1. Preparation for installation of water supply and hot water system → hole reservation → installation of buried water supply pipe → casing lifting → pipe prefabrication → installation of water supply riser → installation of water supply pipe → system pressure test and flushing 2. Preparation for installation of drainage system → hole reservation → installation of buried drainage pipe → pipe prefabrication → installation of drainage riser → installation of drainage pipe → installation of drainage pipe → flooding, water and ball test → system water closure test 3. Rain water System installation preparation → hole reserved → buried rainwater pipe installation → pipe prefabrication → rainwater riser installation → rainwater bucket installation → flooding, water test → system water closure test 4. sanitary ware installation installation preparation → sanitary ware and fittings inspection → fittings pre-assembled → sanitary ware installation → sanitary ware and the wall, ground gap treatment → sanitary ware appearance check → water test VIII, process requirements (a). Water supply, hot water and rainwater system pipeline (hot-plated steel pipe part) installation: water supply, hot water system ± 0.00 below, buried and trench part of the pipeline and rainwater pipeline material for the hot-plated steel pipe, screw connection. When going through the cast-in-place floor slab, leave a good hole. Buried pipes are installed at the required elevation as shown in the drawings, and anticorrosive with two asphalt paints. Water supply, hot water system according to the drawings required test pressure test pressure, no seepage, no leakage, not more than 10% for qualified, plated pipe wire connection, the requirements of the thread processing accurate and regular, there shall be no sisal, and outward exposure of the wire buckle and plating damage with antirust paint anticorrosive. Test pressure: cold water test rob 1.0Mpa, 10 minutes pressure drop ≯ 0.05Mpa, and no leakage is qualified. PP-R pipe installation should be well prepared before: skills training; study drawings; technical briefing study. To be strictly in accordance with the installation to follow the "Annex I" requirements: (ii). Drainage system: the buried part of the drainage system using drainage cast iron pipe, asbestos cement interface, gray mouth filling, full, fill concave into the edge of the mouth is not greater than 5mm. ring gap uniformity, gray mouth flat, drainage cross-pipe should be installed according to standard slope, support card distance set according to the norms, the drain installation is complete, must be carried out a flooding test, the lowest point of plugging, water is full of seepage and no leakage, and then plug the eye fixed, and make the system Through the water, through the ball test with 0.75 times the diameter of the ball, from the top of the drainage riser into the injection of a certain amount of water in the pipe so that the ball smoothly out of the qualified. （PP-R pipeline installation process above ground water supply, hot water pipeline using PP-R pipe heat fusion. Installation process is as follows: 1, pipe handling and storage 1.1 handling pipes and fittings, require small and light, avoid oil, is strictly prohibited violent impact, throwing, falling, rolling, dragging and touching with sharp objects. 1.2 prepare well-ventilated warehouse in order to store pipes and fittings, prohibit open-air storage, and do a good job of preventing direct sunlight and fire prevention measures (not less than 1 m from the heat source). 1.3 pipe level in a flat Ground, to avoid bending the pipe, stacking height control in 1.5 meters, pipe fittings layer by layer yard pile, but can not be stacked too high. 2, pipe laying and installation 2.1 pipe laying in the ground surface, in accordance with the drawings of the design location. If there is a change in the field construction, make a good record of the drawings. 2.2 Pipe installation is strictly prohibited axial distortion, through the wall or through the floor, can not be forced to correct. Water supply PPR pipe and other metal pipes laid in parallel to maintain a certain distance, the net distance should not be less than 100mm, and the polypropylene pipe should be in the inner side of the metal pipe. 2.3 Indoor open-fitting pipeline, in the civil stucco after the completion of the construction, the installation should be with the civil correctly pre-drilled holes or pre-buried casing.2.4 Pipes through the floor, the installation of steel casing (casing 30mm above the ground, and waterproofing measures) . When the pipeline crosses the roof, take strict waterproof measures. Through the front end of the fixed bracket. 2.5 buried directly in the floor surface or wall pipeline, then in the hidden before doing a good job of pressure testing and hidden engineering acceptance records. 2.6 building buried pipe and indoor buried pipe laying requirements are as follows: 2.6.1 indoor floor ± 0.00 pipe laying in segments below. First floor ± 0.00 below to the foundation wall wall section of the laying, to be the end of civil construction, and then outdoor connecting pipe laying; 2.6.2 outdoor floor below the pipe laying in the civil engineering backfill tamping, re-excavation. Do control, it is strictly prohibited in the backfill before or without diameter tamped soil laying; 2.6.3 laying pipe trench bottom should be flat, no protruding hard objects. 2.6.4 buried pipeline backfill, backfill around the pipe to avoid interspersed with hard objects, indoor buried pipeline buried depth of not less than 300mm; 3, pipeline connection 3.1 the same kind of material water supply between the PPR pipe and pipe fittings, the use of heat fusion connection 3.2 water supply PPR pipe and metal pipe connection, using PPR fittings with metal inserts as a transition, the fittings and plastic pipe using heat fusion connection, and metal pipe or other hardware fittings connected with the use of wire fastening connection. 3.3 heat fusion connection method step by step: 3.3.1 heat fusion tool connected to the power supply to reach the working temperature (indicator light on) to start operating. 3.3.2 Cut the pipe to ensure that the end face is perpendicular to the pipe axis. Cutting tool with pipe shears or cutter; if necessary, use a sharp hacksaw, but ensure that the cross-section de-burr, burr; 3.3.3 pipe fittings connected to the end face to clean up, to be clean, dry, oil-free;