Understand the construction method of water and electricity installation in home decoration
Construction method of water and electricity installation in home decoration
1. Slotting of water pipes
Construction method: first, spring the wires, then slotting. Pipeline slotting must be parallel and vertical as required. The pipes that have to run in parallel shall be controlled to be 6-9cm high, and the pipes with faucets shall be vertical. The depth is controlled at 4 cm. After the slot is opened, the person in charge of the construction shall remember the size and position of the slotted pipeline. It is convenient to know the position of the pipeline when installing the sanitary ware in the future.
2. Waterway pipeline installation
Material requirements, PPR pipes and aluminum-plastic pipes. Most users bought aluminum-plastic pipes three years ago, but more users used PPR pipes in the past two years. The pipeline is divided into cold water pipe and hot water pipe. Put an end to the use of galvanized iron pipes for hidden pipelines. First of all, through the construction drawing, the construction personnel discuss the location and use function of the water area with the owner. Arrange the master of water and electricity to discharge and install all faucets and water positions. If there is a construction drawing, it can be arranged according to the construction drawing. If the waterway function of the construction drawing is not in place for a long time, communicate with the owner to increase the waterway use function.
3. Waterway pipeline inspection
Waterway pipeline inspection is very important, which is related to the hidden dangers of waterway safety in the future. We usually do pipeline inspection by pressure test. Pressure test is one of the methods to check the leakage of pipelines. First, all the inner wires are gambled to death with a gambling head. Use a pressure gauge to test the water. Check all joints of all pipes after pressing. The second method is to open the sluice for two days and two nights after gambling, and check all joints on the third day. I usually take the previous method.
4. Secondary waterproofing
After the installation of the waterway pipeline, all the trunking in the bathroom shall be sealed with cement and sand. After the trench and ground are filled with slag, clean the ground and wall again. When the water on the wall and ground is dry, it can be waterproof, and the wall waterproof should be one meter high.
if there is a furniture wall on the back of the kitchen and bathroom wall, it must be completely covered. Play a role in moisture-proof furniture. If the ground needs to be filled with slag, it must be waterproof and then filled with slag. Slag filling is more than 1 cm, and cement sand is used for dry mixing. Make secondary waterproof floor and wall together. . The waterproof skin made on the ground has been destroyed during hydropower construction, so it must be done again with the wall. Waterproofing for the first time is to make sure that the ground will not leak. After the pipeline is installed, the wall and ground should be done again, so that the ground and wall can be more effectively waterproof.
5. Slotting of electric wires and lines
After discussing with the owner the functions and requirements of using electricity, the construction leader will make a disclosure with the electrician and play parallel and vertical slotting. Put away the switch socket bottom box. Sockets are slotted 4 cm from the ground, hanging air conditioning sockets are slotted 2.2 meters from the ground, and switches are slotted 1.2
1.4 meters from the ground. Switch socket bottom fitting installation should be slotted horizontally. The kitchen and bathroom should be slotted according to the designed function.
6. Wiring of electric wires and circuits
Material requirements, 2.5
Copper core wires of more than 6 square meters and conduit pipes of more than 16 mm.. Wiring requirements: Most electricians don't consider wiring high voltage and weak current, switches, air conditioning sockets and electrical sockets separately in circuit wiring.
so slotting also saves a lot of working procedures. The wiring required for high voltage and low voltage shall be separated by 3cm at the lowest limit. The air-conditioning sockets shall be grouped with wires of more than 6 square meters, the electrical sockets shall be grouped with wires of more than 4 square meters and the switches shall be grouped with switches of more than 2.5 square meters.
precautions for water and electricity installation in home decoration
1. Circuit engineering
1. All electrical control lines and lines must wear PVC pipes.
2. If there is no shady corner at the ceiling and there is a reducing wall, the line will go from the wall.
3. The wires of the same circuit should be laid in the same pipe with appropriate wire diameters, and the number of wires passing through the pipe should be no more than 4% of the cross-sectional area of PVC pipe.
4. The fixed position of the switch socket must meet the requirements, that is, the switch is 12-13MM from the ground and the socket is 3-45MM from the ground.
5. If the indoor area is more than 4 square meters, the air conditioning line shall be laid with 4 square millimeter BV copper core.
Second, waterway engineering
1. All joints are firm and reliable, with good sealing performance.
2. The outlet of the open pipe should be cold at the top and hot at the bottom, hot at the left and cold at the right.
3. Before indoor concealed pipes are closed, pressure test must be conducted. Generally speaking, under the premise that the working pressure is not greater than .6MPA, no decompression phenomenon is qualified.
4. In the process of waterproofing, the integral cast-in-place waterproofing generally requires one cloth with three oils, or two cloth with six oils.
5. The waterproof layer of the coating must be smooth and uniform, without peeling, peeling, cracking, bubbling and other defects.