Technical disclosure of water supply and drainage pipeline equipment installation 1. Project overview: The surgical ward building of Liaocheng Second People's Hospital, designed by Shandong Architectural Design Institute, has a frame structure, with main floor 1 1, local floor 12 and construction area14443m2; Located in Liaocheng Second People's Hospital. The installation project includes three sub-projects: electrical, water supply and drainage, and air conditioning, with large quantities and complicated specialties. Water supply and drainage engineering branch is mainly composed of water supply system, hot water system, drainage system, fire hydrant water system, spray water system and water supply and suction pipes. Second, quality requirements: qualified rate100%; The excellent and good rate reached 90%. Three. Construction period: 20061October 25th to June 3rd, 2003. 580 days IV. Technical basis: 1, Unified Standard for Quality Inspection and Evaluation of Construction and Installation Engineering (GB50300-200 12), Technical Operating Rules for Safety of Construction and Installation Workers (III), Technical Rules for Safety in Use of Construction Machinery (JBJ33-864), Technical Specifications for Temporary Electricity Use in Construction Site (III) Code for Acceptance of Construction Quality of Building Water Supply, Drainage and Heating Engineering (GB50242-20027), Code for Construction and Acceptance of Water Supply and Drainage Pipeline Engineering (GB50268-998) and Interim Provisions on Safety and Civilization Supervision of Liaocheng Construction Industry (IX). Answer records of design drawings and related drawings (10) and other relevant technical specifications and standards (5). Arrangements for construction personnel (1) are always on site: plumbers. Qianggong, 1. (2) two welders can be transferred to the site at any time to participate in the construction; Plumbers, 5 people; Strong workers, 2 people; Mechanic,1; Painter, 3 people; Fitter, 2 people. ③ Maximum number of people required for on-site construction tasks: 3 welders; Plumber, 7 people; Strong worker, 3 people; Mechanic, 3 people; Painter, 4 people; Fitter, 4 people. Six, construction machinery, metering device plan ① electric welding machine,1; ② Bench drill, 1 set; (3) Electric hammers, 2 sets; ④ Electric threading machine, 1 set; ⑤ Drilling rig, 1 set; 6. Cutting machine, 1 set; ⑦ Polishing machine, 2 sets; ⑧ vise, 1 set. ① The magnetic field lines decrease,1; ② Metal tape measure (5m), 2; ③ Level, 2; ④ Pressure gauge,1; ⑤ Micrometer, 1. Seven. Construction procedure 1. Installation preparation of hot water supply system → reserved holes → installation of buried water supply main pipe → casing hoisting → pipe prefabrication → installation of water supply riser → installation of water supply branch pipe → pressure test and flushing of system → installation preparation of drainage system → reserved holes → installation of buried drainage pipe → pipe prefabrication → installation of drainage riser → installation of drainage branch pipe → irrigation and drainage. Pass the ball test → system closed water test 3. Installation preparation of rainwater system → reserved holes → installation of buried rainwater pipes → pipeline prefabrication → installation of rainwater risers → installation of rainwater buckets → irrigation and water supply test → system water closing test 4. Sanitary ware installation preparation → sanitary ware and fittings inspection → fittings pre-installation → sanitary ware and wall, ground gap treatment → sanitary ware appearance inspection → water retention test 8. Installation of hot water and rainwater system pipes (hot galvanized steel pipes): The water supply and hot water system is below 0.00, and some buried, trench pipes and rainwater pipes are made of hot galvanized steel pipes with threaded connections. Leave a hole when you wear the cast-in-place floor slab. Buried pipelines should be installed at the elevation shown in the figure and coated with two layers of asphalt paint for anticorrosion treatment. The water supply and hot water system shall be pressure tested according to the test pressure required by the drawings, and it is qualified if it is impervious and not more than 10%. The threaded connection of the coated pipe should be accurate and neat, and there should be no hemp. The exposed threads and damaged parts of the coating should be coated with antirust paint for corrosion protection. Pressure test: Take 1.0Mpa for cold water test, and10mpa for pressure drop ≯0.05Mpa, without leakage. Before the installation of PP-R pipeline, full preparations should be made: skills training; Learning drawing; Technical disclosure learning. Install in strict accordance with the requirements of Annex I: (2) Drainage system: The buried part of the drainage system adopts cast iron drainage pipes with asbestos-cement joints, with full gray mouth, uniform circumferential seam with notch edge of not more than 5 mm, flat gray mouth, horizontal drainage pipes installed according to standard slope, elevator spacing set according to specifications, and drainage pipes installed. After the lowest point is blocked, the water will not leak when it is full, and then the hole is blocked and fixed, and the water is supplied by the system. The ball with a diameter of 0.75 times was put into the drainage riser from the top, and a certain amount of water was injected into the pipe to make the ball flow out smoothly. (3) Installation process of PP-R pipeline PP-R pipeline is used for hot melting of water supply and hot water pipelines above the ground. The installation process is as follows: 1, pipeline handling and storage 1. 1. When handling pipes and fittings, handle them with care to avoid oil pollution. It is forbidden to bump, throw, drop, roll, drag or touch sharp objects. 1.2 prepare a well-ventilated warehouse to store pipes and pipe fittings, and it is forbidden to store them in the open air, and take measures to prevent direct sunlight and fire (not less than 1 m from the heat source). 1.3 The pipeline shall be placed horizontally on a flat ground to avoid pipeline bending. The stacking height should be controlled within 1.5m, and the pipe fittings should be stacked in layers, but not too high. 2. Pipe laying and installation 2. 1 Pipes shall be laid on the floor according to the design position of drawings. If there is any change in site construction, make a graphic record. 2.2 During installation, it is forbidden to twist the pipeline axially, and it is forbidden to forcibly correct it when crossing the wall or floor. When water supply PPR is laid in parallel with other metal pipes, a certain distance should be kept, and the clear distance should not be less than 100mm, and polypropylene pipes should be in the metal pipes. 2.3 Indoor exposed piping shall be carried out after civil painting, and holes or embedded sleeves shall be reserved correctly in coordination with civil engineering before installation. 2.4 When the pipeline crosses the floor, set steel casing (the casing is 30mm above the ground, and waterproof measures shall be taken). Strict waterproof measures should be taken when the pipeline crosses the roof. The front end of the intersection is provided with a fixed bracket. 2.5 Pipes buried directly in the floor or wall shall be recorded in pressure test and concealed works acceptance before concealment. 2.6 The laying requirements for underground water supply pipes and indoor buried pipes of buildings are as follows: 2.6. Indoor floor pipes below kloc-0/.00 shall be laid in sections. First, lay the floor below 0.00 to the outer wall section of the foundation wall, and then lay the outdoor connecting pipe after the civil construction is completed; 2.6.2 Pipes below outdoor terrace shall be laid and excavated after civil backfill soil is compacted. Do a good job of control, and it is forbidden to lay in the soil layer before backfilling or without diameter compaction; 2.6.3 The trench bottom for laying pipelines shall be smooth and free from prominent hard objects. 2.6.4 When backfilling the buried pipeline, the backfill around the pipeline should avoid inclusion of hard objects, and the buried depth of the indoor buried pipeline should not be less than 300mm；; 3. Pipe connection 3. 1 The water supply PPR pipe is connected with pipe fittings of the same material by hot melt, and special hot melt tools are used for installation. 3.2 PPR pipes for water supply are connected by metal pipes, and PPR pipe fittings with metal inserts are used for transition. The pipe fittings are connected with plastic pipes by hot melting, and with metal pipes or other hardware fittings by threaded connection. 3.3 Hot-melt connection method steps: 3.3. 1 The hot-melt tool is powered on, and starts to operate after reaching the working temperature (the indicator light is on). 3.3.2 Cut the pipeline to ensure that the end face is perpendicular to the pipeline axis. Pipe shears or cutters for cutting tools; If necessary, use a sharp hacksaw, but ensure that this part is deburred and deburred; 3.3.3 When pipes and fittings are connected, the end faces shall be clean, clean, dry and oil-free;