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All participating units of Gezhouba Greentown Beijing Jinghang Plaza Project shall carry out their work in strict accordance with the requirements of Greentown Group's fine construction management, and build Jinghang Plaza into a high-quality project with excellent quality, good appearance and humanization.
Civilized standardization, the living area and office area of the construction site are clean and tidy, and there is a special person in charge
The warehouse is tidy and the operating procedures are on the wall
Material stacking, classification, batching, management, inspection responsibility to the person.
The material processing area has complete safety and civilization measures
Construction deepening drawings on the wall
Drawing deepening
Before the start of the project, the construction drawings should be reviewed and the pipeline should be optimized. The project has hired a professional company to build a BIM model for the complex parts of the pipeline and important parts such as the machine room, and the participating units need to deepen the drawings on the basis of the BIM model.
The drawing deepening is divided into: the deepening drawing of casing and reserved holes in the embedded stage, the deepening drawing of pipe wells and cable wells, the deepening drawing of the technical layer, the deepening drawing of the floor walkway, the deepening drawing of the roof pipeline, the comprehensive deepening drawing of the basement garage, the deepening drawing of the functional machine room, the deepening drawing of the comprehensive support, etc.
After the drawing is deepened, it will be submitted to Party A and the design institute for review, and the deepening drawing will be reviewed, and the construction can only be carried out after the review is passed.
Casing embedding
Review the casing position, casing spacing, elevation and size of the extended finish surface according to the casing depth drawing.
Check the height and extension length of the ventilation casing when embedded, and consider the length of the wall outlet required for the bell mouth when the electrical casing is buried.
Before the template is closed, fill the casing with rubber and plastic insulation material leftovers, foam boards, etc., and completely close the two ends of the casing with tape. After the self-inspection is qualified, it will be reported to the supervision and the management personnel of the engineering department of the project company to check one by one on the spot, and do a good job of concealed information.
After the formwork is removed, clean the casing, and do a good job of obvious marking, anti-corrosion and finished product protection.
The size of the closed casing out of the wall should be carefully checked and fixed firmly
Electrical pipelines are embedded
The electrical pipeline is embedded according to the deepening drawing, and the piping needs to be firmly and tightly connected, the pipeline is straight, the elbow is less crossed, and the lock nut of the wire box is fixed firmly, and the grounding jumper is done. The PVC line pipe is tightly embedded and glued, and it is strictly prevented from being flattened and deformed when embedded.
Take photos and do a good job of concealing information before pouring, and supervise the person during pouring; after the mold is removed, under the supervision of the project management personnel and the supervising engineer, the wire box and the dredge pipeline are cleaned up one by one according to the way of ticking on the drawings, and the anti-corrosion and marking are done, and the bottom of the line pipe is marked at the bottom of the embedded place.
Buried drainage pipes are pre-buried
The slope of the buried pipeline should be maximized as much as possible, the joint bracket should be fixed firmly, the anti-corrosion should be in place, the height of the pipeline protruding from the ground should be controlled, and the photos and concealed information should be taken after the full water test is qualified, and the nozzle should be plugged in place.
The bracket is securely fixed
Bracket making
According to the comprehensive arrangement of the bracket deepening drawing for prefabrication, the selection of the steel bracket must be scientific and reasonable, to go through the weight calculation and anti-deformation calculation, the welding bracket should be made of mold fixation, to prevent welding deformation, salty and wet basement should be made of galvanized steel, the bracket rust removal paint in place, do a good job of protection.
When welding the bracket, the abrasive tool is made to be fixed, and the welding deformation is placed, and the rust and anti-corrosion are in place, and the appearance is good.
When welding the bracket, the mold is fixed to prevent welding deformation, and the rust removal and anti-corrosion are in place, and the appearance is good.
Pipe fabrication
The production site is clean and tidy, the operating procedures are on the wall, and the prefabricated is processed according to the size of the detailed design drawings, and the special parts of the pipeline are selected according to the structure and the position of the bracket to be processed by the manufacturer.
After the galvanized fittings are installed, the internal and external hemp wires need to be cleaned, and the anti-corrosion length should be 100mm. The groove depth of the groove connection pipeline is subject to the actual connection of the groove fittings, the groove is anti-corrosion, the plastic-coated pipe pays attention to the quality of the groove, the seamless pipe is prefabricated to pay attention to the vertical flange end face and the quality of the weld, and the flange avoids the bottom of the beam and the position of the support. The casing at the wall, beam and floor slab needs to be put in during prefabrication, and the pipeline shall not be polluted before galvanizing.
After the galvanized fittings are installed, the internal and external hemp wires need to be cleaned, and the anti-corrosion length should be 100mm
Strict control of weld quality
Focus on controlling the quality of the groove, and do a good job of anti-corrosion at the groove
Focus on controlling the verticality of the flange end face and the quality of the weld
When the pipeline is prefabricated, the position of the flange is considered according to the deepening drawing, and the position of the bottom of the beam and the support is avoided
Electrical fabrication
Electrical prefabrication is mainly bracket prefabrication, line pipe elbow prefabrication, line pipe internal anti-corrosion, wire sleeve, crossover prefabrication, bridge elbow, tee prefabrication, bus on-site measurement and customization. Pay attention to the fixed bend at the intersection of the line pipe, and deal with the burr at the nozzle at the thread. The finished bridge should pay attention to the port 900 grinding, the bridge docking should be made of a soft pad platform to prevent scratching the bridge, pay attention to the gaps during assembly, try to use the elbow processed after the manufacturer's on-site measurement, and pay attention to the angle and weld and anti-corrosion of the elbow processed on site.
Ventilation production
The ventilation processing site must be fresh and tidy, the floor of the white iron sheet production site needs to be padded with soft carpet to prevent the galvanized layer from scratching, and the white iron sheet can not be stacked outdoors to prevent moisture corrosion, and the white flowers can be cleaned before making and the varnish on both sides can be brushed.
Flange production to prevent deformation needs to make molds, flange production after the production of anti-corrosion measures, salty and wet areas using hot-dip galvanized steel, after the completion of the air duct processing to do a good job of finished product protection.
The white iron sheet is made of soft paving such as floor mats and carpets to prevent the galvanized layer from scratching
The white iron sheet is made of soft paving such as floor mats and carpets to prevent the galvanized layer from scratching
The flange is made by using molds, and the finished product is regular, and the flange is made to prevent corrosion in time
Equipment installation
After the project company determines the equipment manufacturer and model, the comprehensive layout drawing shall be completed according to the actual size, and the construction can only be carried out after the project company and the design institute are reviewed and confirmed. The model of the equipment should be carefully checked when entering the site, the equipment should be installed and handled with shock absorption measures, and the equipment outlet pipeline support should be reasonably arranged.
The roof equipment bearing is made of hot-dip galvanized steel, and the soft connection of the inlet and outlet of the fan is made of stainless steel.
Automatic exhaust valves and drain valves should be installed at the inlet and outlet of the fresh air unit, pay attention to the height of the trap, and pay attention to the discharge slope and discharge mode of all condensate pipes.
Signs should be made on the equipment, the opening of the inlet and outlet valves, and the arrows of the flow direction of the pipeline medium.
Reasonable shock absorption measures are taken, and the equipment is reliably grounded
The indication of the flow direction of the medium is clearly marked
The soft connection of the inlet and outlet of the roof fan is made of stainless steel, and the soft connection of canvas is not waterproof, and the exposed equipment is equipped with a waterproof cover.
Bracket mounting
Before the bracket is installed, check the elevation and entry and exit dimensions according to the deepening drawing, determine the position of the bracket with an infrared level, and install the brackets in rows and lines.
The fixed bracket is reasonably set up according to the process, and the wooden support is made of finished wooden support;
The asbestos board isolated from the pipe, air duct and bracket is pasted onto the finished bracket with glue in advance, and then the pipe and air duct are installed.
The stent should be anti-corrosion, and the finished product should be protected to prevent cross-contamination.
The brackets are prefabricated according to the detailed drawings, and the finished products are inspected one by one
Installation of water supply and drainage pipes
Pay attention to the quality of the thread connection of galvanized pipe installation, use epoxy resin glue for the thread seal of the position that cannot be repaired in the pipe well and ceiling, and pay attention to the reasonable setting of fixed brackets at the fittings and straight pipe sections.
Seamless pipe galvanized secondary installation, after galvanizing, straighten the pipe section and clean the end face of the flange sealing ring, the flange bolts are in the same direction during installation, and the interface is aligned.
The stainless steel pipe adopts socket welding, and the pipe interface should be straightened before welding during assembly, so as to avoid upward welding affecting the welding quality.
After the pipeline installation is completed, the text and arrows should be marked and the finished product should be protected.
The pipeline installation should be arranged in a row, and the anti-swaying bracket should be reasonably arranged
Selected from the permanent member database of the mechanical and electrical world, if you want to know about VIP services, please pay attention to this private message reply: VIP. Click here to learn:
[Detailed introduction of permanent members of the electromechanical world, one-click download of the 9T electromechanical technology database, click to learn more!]