What should be paid attention to in concealed engineering construction?

The so-called "concealed works" refer to projects that need to be covered and concealed, such as foundations, electrical pipelines and water supply and heating pipelines. According to the decoration process, these "hidden works" will be covered by the following processes, so it is difficult to check whether the materials meet the specifications and whether the construction is standardized. Concealed engineering refers to the engineering laid inside the decorative surface. The concealed works of home decoration mainly include six aspects: water supply and drainage works, electrical piping works, floor base, partition base, door and window cover base and suspended ceiling base.

Matters needing attention in wire construction

1. The wires shall be laid with flame-retardant concealed pipes, and there shall be no knots and kinks in the wires.

2. "The live wire enters the switch, and the neutral wire enters the lamp holder", and the wiring of the socket shall comply with the provisions of "grounding on the left zero and right fire".

3, air conditioning and high-power electrical appliances should be set separately (flame retardant tube processing).

4, the power cord, TV line, telephone line shall not be installed in the same pipe.

5, switch, socket installation is firm, the position is correct, the cover plate is correct, close to the wall, seamless around.

6, the power cord will affect the clarity of the telephone and TV, so the telephone line and TV line should be separated from the power cord.

7. The socket shall be no less than 200mm from the ground ... There shall be wire allowance in the box, and the length shall be 150mm. When wiring, the phase line enters the switch, and the zero line directly enters the lamp holder. Don't connect the phase line of screw cap to the shell. The lighting height from the ground should be 1.3mm, and the switch should not be installed behind the door.

8. The connection method is: If the socket is on the upper part of the wall, slot the wall vertically upwards, and install decorative corner lines on the top of the wall; If it is in the lower part of the wall, slot vertically downward to the bottom of the skirting board. The depth of the groove is about15 mm. Put the wire and conductor into the protective sleeve, lie in the groove on the wall, smooth it with cement mortar and fix it in the wall. If the original socket is retained, it should be reinstalled in the original location; If it is not retained, it should be filled with bricks and leveled with cement mortar. When installing the skirting board, the wires along the ground are located inside the bottom of the skirting board. When installing the decorative wire, the wires along the top corner are hidden in the decorative corner line.

9. PVC pipes are required for laying electrical lines and concealed pipes, and PVC trunking must be used for laying open wires. Avoid wall cracks caused by gouging during construction and damage to wall structure. When laying, it should be changed according to the number of wires in the pipe. There should be no more than four wires in the same tube. It is forbidden for wires to occupy all the space in the pipe. Air conditioning, lighting and sockets should be controlled by branches, generally at least four ways. Lighting all the way, air conditioning all the way, three or four sockets. The advantage of this is that once a line has a short circuit or other problems, the power outage range is small and will not affect the normal work of other lines. The distance between the power cord and the telephone line and TV line should be more than 50 cm, and the pipeline should be fixed with the structure. Junction boxes shall be installed at all switches, sockets and lights.

10, the grounding protection is sufficient, and the insulation resistance between wires and wires to ground should be greater than 0.5MΩ.

1 1. When laying wires through pipes, there shall be no joints or kinks in the pipes.

12. Fix the wire sleeve with wire clamp or inner wedge with iron wire.

13, the power cord head in the ceiling is protected by hose.

14, wires must be routed in color separation. The phase lines shall be of uniform color (yellow or red), the zero line shall be blue, and the grounding line shall be yellow and green. Facing the power socket, the left hole is connected to the zero line and the right hole is connected to the phase line; For sockets with grounding holes, the grounding holes should be directly connected to them.

15, the wire connector must be treated with insulating tape and waterproof tape.

Matters needing attention in moving gas meter

When you close the door, you may find a big gas meter in the middle of the kitchen wall. No matter how you install cabinets in the future, you can't hide them. The gas meter can be moved, but it must be done by a professional.

You can call the gas company whose property is responsible for this area, and then make an appointment for them to carry out renovation.

However, if you know some people's experiences about gas transformation, you will know that the cost of finding a gas company to transform is amazing. Many people think that the gas company is public and cannot bargain. Actually, here are some tips.

For example, changing the location of the gas meter, the general gas company's expenses are divided into two parts: the gas meter moving fee+the gas pipeline used by the meter.

The so-called gas meter movement means that you only move one inch and one meter, and the cost is the same (probably around 300 yuan! ), and the gas meter is moving, but the workers need a little skill and won't consume any materials. So, in fact, after the general workers come, you can buy them a few boxes of good cigarettes and then bargain. Many workers don't have to charge you this fee, which saves a lot.