First, electrical installation
1. Reserved pre-embedding on floor slabs and shear walls
Workflow: Positioning and routing → junction box selection and installation→ electrical piping, fixing → adjustment and plate surface cleaning
1.1 Positioning the release line
1.1.1 The project department optimizes the hydropower drawings, combines the construction drawings to position the positions of the line pipes, electrical boxes, switches and sockets in the hydropower construction drawings, and submits the optimized drawings to the labor team for construction and technical submission to the labor team.
Switch position positioning diagram
Positioning diagram of strong and weak electrical box
1.1.2 According to the optimized construction drawings and technical intersection provided by the project department, the positioning of the junction box and the nozzle under the beam is positioned and marked on the template, and the junction box reflects the direction of the conduit in the form of arrows.
After the formwork is laid, the position of the wire box such as the switch and socket is located
1.2 Junction box selection and installation
1.2.1 According to the different directions of the electric pipe in the construction drawings, it is divided into one pass, straight two pass, curved two pass, three pass and four pass. According to the markings on the template, the lamp head box is fixed with nails, the bottom of the box should be close to the floor template after the installation of the lamp head box, and the lead wire is fixed at 200MM from the lamp head box after piping, and the light head box is sealed with sawdust, and the sealing tape is used to seal the treatment to prevent concrete from entering.
Junction box selection and positioning
1.3 Electrical piping, fixing
1.3.1 According to the optimized construction drawings and drawings triage, design changes, etc. to determine the pipe, the junction box material and the pipe material should be consistent, according to the positioning of the identification of the pipe.
1.3.2 When piping on the floor slab, the connection between the electric pipe and the lamp head box is bonded with special glue, and when the nozzle enters the box and the box, the lock mother and the guard should be added; the electrical pipe should be laid straight, minimizing bending, the bending radius at the corner is not less than 6D, the bending flatness of the conduit does not exceed 10% of the outer diameter of the pipe, and the bending part cannot be folded, dented,
Flat cracking phenomenon, must not cross three electrical tubes at the same point.
1.3.3 The spacing of the fixed point of the electric pipe is 1000MM on the straight line segment, the corner of the electric pipe and the two sides of the junction box are 200MM, and the spacing between the line pipes is maintained at 20mm; the wire box is installed as required: when there is no bend, the length of the pipeline exceeds 30m and the package is installed through the box and box, and when there is a bend, the length of the pipeline exceeds 20m and the wire box and box are installed, and there are two bends
When the length of the pipeline exceeds 15m and the junction box is installed, when there are three bends, the length of the pipeline exceeds 8m.
1.3.3 When the beam plate line pipe is laid, the distance between the switch downspout pipe and the door edge is 15 to 20cm, the distance from the bottom of the protruding beam is 50mm, and the distance between the line pipe and the beam edge is greater than 50mm socket piping, the height of the pipe nozzle protruding from the floor surface is 50mm, and the protective layer of more than 15mm is retained according to the wall position in the building construction drawing, and special attention is paid to the positioning of the line pipe at the 10cm thin wall to avoid the deviation of the line pipe. After the piping is completed, flatten with vise or sharp-nosed pliers or treated with sealing glue to avoid mortar flowing into the tube.
1.3.4 When piping on the shear wall, the structure 50 lines can be used to control the height of the wire box through the infrared level, the distance between the switch on the shear wall and the door edge is 15 to 20 cm, the socket wire box pays attention to the avoidance of drainage, gas and drainage pipes, the distance between the strong and weak wire boxes is maintained at more than 30 cm, and the height error of the same type of wire box in the same room does not exceed 5 mm.
1.3.5 In the construction of piping, it is necessary to strengthen communication and cooperation with civil engineering, leave a reasonable time for hydropower installation to do a good job, take the model as the guide, do a good job of physical model, and standardize the construction process and method through the model to set standards.
1.4 Adjustment and plate surface cleaning
1.4.1 After the completion of the reinforcement of the upper layer of the civil engineering, the floor pipe should be adjusted to meet the requirements of straightness and aesthetics, and the remaining materials and waste materials on the floor surface should be cleaned up, so as to achieve "the completion of the work and the site clearance". After the completion of the line pipe laying, it is necessary to do a good job of pipe protection work, coordinate well with steel reinforcement, carpentry and other types of work to prevent the line pipe from being artificially damaged and crushed by materials, and at the same time, when the concrete is poured, the plumber should track the duty.
1.5 Example images
Wall column buried lead structure 50-wire control box elevation
Embedded box elevation control on the same wall, the same type of box elevation in a straight line
The distance between the wall column embedded switch wire box and the door side is controlled at 15 to 20 cm
The spacing between the strong and weak wire pipes of the wall column is greater than 30cm
The wall column embedded wire box elevation control is accurate, the line pipe spacing is reasonable, and the wire box is tightly blocked
Wall column wire box embedded molding effect
The wall column embedded wire box is not firmly fixed, and the concrete is easily displaced when it is vibrating
The conduit inlet box is not fitted with a lock female
There is no spacing between conduits
The switch box is too far from the door edge
The line pipes in the common part are arranged neatly, the spacing of the line pipes is reasonable, and the horse road is set above the line pipe to prevent trampling on the line pipe
The layout of the line pipe is reasonable, the simmering curve meets the requirements, and the sealing is tight
Lightning protection line under the line to avoid confusion
The switch conduit is positioned inside the construction column to avoid slotting
The upfew pipes are neatly arranged, tightly sealed, and the height of the upturned is reasonable
The conduit crosses three layers
The line pipe is too close to the lamp head box, and the line pipe is easy to break during decoration
The coiled pipe simmering curve is too large, and it is difficult to thread in the later stage
The curved flatness of the manifold pipe exceeds 10%
The conduit at the 10cm thin wall is pre-embedded off-position
The JDG tube is not fitted with a tightening screw
The conduit is too close to the floor drain location
The kitchen socket conflicts with the flue position and is not easy to repair
The position of the water pipe and the junction box conflicts, and the water pipe is just covered after the installation of the water pipe, affecting the use function
The positioning of the conduit at the electrical box is inaccurate, and the buried conduit is offset
The position of the doorside switch conduit is not accurate, and the conduit turns too much, which is not easy to thread
Wall slotted bullet line positioning
The wall groove is uniform and beautiful, the width and depth meet the requirements, the groove depth is dn+15mm, and the width is dn+30mm
The wire pipe into the box plus the lock mother, the line pipe spacing is reasonable, the line pipe lashing and fixing firmly
The cable box is mounted flush with the plaster surface, and the wire box is beveled around the box
The wall groove depth is not required
The depth of the wall groove does not meet the requirements
The rear masonry wall conduit laying has no spacing
Second, water supply and drainage
1. Shear wall and roof plate are reserved for embedding
1.1 The project department optimizes the water supply and drainage drawings, combines the construction drawings to position the casing and reserved holes in the water supply and drainage construction drawings, and submits the optimized drawings to the labor service team for technical submission.
1.2 Basement exterior wall, out of the roof pipe to be buried rigid waterproof casing, through the floor slab rigid casing embedding to be precise positioning, to avoid the pipe and casing different center or deviation is larger, shear wall casing embedding to control the casing height, fixed firmly, to prevent drainage pipe installation slope.
1.3 The ends of the wall casing are flush with the wall finish, and the top of the floor casing without waterproof requirements is 20mm higher than the floor decoration surface of the building; the top of the casing of the house is 50mm higher than the floor decoration, and the roof casing should be 300mm higher than the decorative completion surface.
Embedded casing positioning identification
The waterproof casing is embedded once
Shear wall air conditioning casing is buried, firmly fixed, and the slope is reasonable
The kitchen drainage interface is installed in place, and the casing is reserved, and the lower mouth of the horizontal branch pipe is 200mm above the ground
The pipe is buried in the rigid casing through the floor slab, and the casing is 20mm higher than the decorative surface of the floor slab
The casing reserves holes in the offset
The rigid sleeve is incorrectly positioned
Third, the protection of finished products
1. The plumber should strengthen the cooperation with carpentry, reinforcement, masonry and other types of work, and the project department should coordinate in a unified manner to prevent the protruding floor line pipe from being crushed and artificially damaged by the material in the pre-embedding stage, to prevent artificial damage when the beam bottom line pipe is disassembled, and to prevent the line pipe from being artificially sealed and blocked when the wall is built.
2, plumbers should do a good job of technical protection measures, when the line pipe is buried, the plate surface line pipe is 50mm higher than the floor structure surface, the beam bottom line pipe protrudes 50mm at the bottom of the beam, and the exposed plate surface line pipe should be tightly sealed to prevent blockage when concrete pouring.
3, concrete pouring to do a good job in the cloth machine around the line pipe protection, concrete pouring to arrange plumber duty, do a good job of damage to the line pipe protection; out of the board surface into a row of line pipe with wooden box protection, single line pipe with PVC box protection, water pipe with mortar to do a good job of protection, drainage pipe surface with film to do a good job of protection, to prevent mortar pollution, the opening end of the wire box with tape sealed, to prevent mortar entry when plastering.
The conduit protrudes from the bottom of the beam too long and is damaged when the mold is removed
The board surface conduit is not blocked, the finished product protection is not done, and the conduit is damaged
The cloth machine position conduit is squashed
The die steel pipe crushes the line pipe
The material basket crushes the conduit
The steel bar is pressed to the line where the tube is dense
Use a pad plate under the cloth machine to avoid crushing the conduit
The concrete pump pipe is erected with a bracket to avoid damage to the conduit
Lay horse tracks to avoid trampling on reinforcement and line pipes
The beam bottom line pipe is cut off to 5cm below the beam in advance to avoid damage to the mold removal
Board and surface line pipe wooden box, PVC mortar box protection
When masonry masonry is built, the line pipe hole is left out, and the work type is well coordinated
The wire box is sealed in place to avoid mortar ingress contamination
Water supply line protection in place
Drainage pipe film protection to avoid mortar contamination