What exactly does hydropower installation embedding do? What qualifications do I need to apply for?

1. Water supply and drainage pre-embedded: casing out of the house, riser through the floor casing (including balcony, toilet, tube well, floor drain, condensate; If there is still air-conditioning water, then it is necessary to add the water supply, backwater, and drainage of the air-conditioner, which are mainly casings that penetrate the wall and the good person wears the floor). 2. Electricity pre-embedded:

Line pipeline box reserved embedded, distribution box reserved embedded, toilet equipotential flat iron, door and window grounding flat iron, manhole bridge bus duct, equalizing ring, down conductor and so on. 3. Pre-embedding of HVAC: As mentioned above, the air duct tuyere, etc., the main attention is that the channel of the air-conditioning equipment in place is reserved for civil engineering coordination. Better.

1. Water supply and drainage;

1) The length of various casing gas buried in the shear wall should be equal to the thickness of the shear wall, the inside of the casing should be brushed with anticorrosive paint, and the casing should be fixed on the steel bar and grounded;

2. The casing embedded in the kitchen and bathroom room, corridor, and roof floor slab should be at the same level as the roof, and the upper height should be 5mm higher than the decorative surface;

1) The lower part of the casing embedded in the hydropower well is the same as the roof, and the upper part is 5mm higher than the finished surface;

2) The two ends of various casings embedded in the rear masonry wall should be 2mm higher than the wall, and the casing should be brushed with anti-rust paint;

3) The embedded water supply pipe can only be concealed after passing the pressure test.

3. Electrical; (1) The lightning protection and grounding device of the foundation raft, the flat steel that leads out, the down line, the test point, the reserved grounding steel plate, the equalizing ring, and the anti-side lightning can be concealed after the supervision and acceptance;

2) The embedded PVC line pipe should be a heavy-duty pipe, and the joints of the pipe should be glued and connected with a direct casing. The pipe is laid in the middle of two layers of steel bars and is fixed on the steel bar with wire ties;

3) The line pipe of 32 and above should not be bent, and the finished elbow with large arc should be used;

4) The height of the intersection and overlap of the line pipe should not be higher than the height of the upper reinforcement;

5) The line pipe at the place where the ground is drawn out or the beam plate is led down should be more than 50mm higher than the concrete surface or template, and the nozzle should be sealed tightly with tape paper;

6) The inside of the metal wire pipe should be anti-corrosion, and the connection should not be welded against the counterpart, and the cross-welding (including the metal wire box) should be done and the grounding should be done;

7) The wire box embedded in the concrete should be filled with sawdust or newspaper and then sealed with tape paper, and the wire box should be close to the template and connected with the wire pipe with the lock nut. The wire box embedded in the rear wall should be higher than the wall.

3. Cooperate with civil engineering to do a good job of various reserved holes;

4. After the pre-embedding work of the distribution sub-project is completed, the first self-inspection is carried out, and various installation and concealment data are done;

5. Concealment can be concealed only after passing the inspection and supervision.