Quotation for water and electricity installation projects Introduction to water and electricity installation knowledge

Water and electricity installation is an important part of home decoration. Water and electricity installation is also a technical job. Before doing water and electricity installation, it is necessary to carry out related water and electricity renovation projects according to personal needs. This is also a part of the knowledge of water and electricity installation. focus. It is directly related to the issue of home safety hazards, so it is very important to choose a water and electricity installation company, and you must also understand the quotation of water and electricity installation projects.

Quotation of water and electricity installation projects

The price of water and electricity installation is generally divided into three parts: 1. Weak current installation part, 2. Strong current installation part, 3. Waterway reconstruction part.

The strong and weak electricity in the house includes the following points:

1. Wires: telephone wires, network cables, TV cables, audio cables, audio cables, video cables, background music, etc. .

2. Wire conduit: PVC rigid flame-retardant electrical pipe with diameter D16. Wire conduit 3. Weak current (telephone and TV network cables) are passed through the pipe separately. Switch socket bottom box 86 type 10 yuan/piece; 118 type 15 Yuan/piece. Adding a 16-channel information integrated box costs an additional 160 yuan/set. Make sure there are no joints in the pipe, fill the grooves with gypsum or cement mortar after burying the pipes. Hidden tube price: 28 yuan/meter. Exposed pipe price: 18 yuan/meter

Materials: 1PVC pipe, thickened cold-bent pipe, wire.

Among them, we should pay attention to the fact that there should be no more than 3 wires in the flame-retardant electrical pipe. If there are more than 3 wires, an additional 5 yuan per meter will be added. There are no joints for the wires in the pipe, and a junction box is used for the branch points. The bottom box of the switch socket is 10 yuan per box for type 86; 15 yuan per box for type 118; 10 yuan per meter for 4 square meters of wire. Multiple pipes in the same slot are billed as multiple hidden lines. After trenching and burying the pipe, fill it with gypsum or cement mortar.

Concealed pipe: 35 yuan/meter

Exposed pipe: 25 yuan/meter

Materials: PVC wire thickened cold bent pipe, wire.

The renovation of the waterway in the house includes the following points:

1. 20PP-R water supply pipe (concealed installation): 60 yuan/meter, b.20PP-R water supply pipe (exposed installation) ): 45 yuan/meter, ?c. Sewer installation (50PVC pipe): 60 yuan/meter, PS: PP-R pipe is Weixing or Jinde pipe. The sewerage is Liansu pipe. 2. Each meter contains one equal-diameter and one reducing-diameter pipe sleeve, and one 90-degree elbow. 3. Valve hardware is not included. 4. 25. Add 10 yuan per meter for water pipes. 4. If the water pipe is less than one meter, it will be calculated as one meter. 5. There is an additional charge for drilling holes, which is 40 yuan/unit for load-bearing walls and 20 yuan/unit for non-load-bearing walls. 6. PP-R pipes are all hot water pipes with a skin thickness of 2.8. 7. If the sewer pipe is calculated as 50 and is larger than 50, separate negotiation will be conducted.

Knowledge of water and electricity installation engineering

Knowledge of water and electricity installation 1 Grooving of water pipes

Grooving of water pipes: construction method, first elastic line, then groove . Pipeline grooving must be parallel and vertical lines as required (it is better if there is a hydropower construction drawing to compare with the construction drawing). Pipes that must be routed in parallel must be controlled to be 60-90 cm high (from the ground), and pipes with faucets must be vertical. The depth is controlled at 4 cm. After the wire trough is opened, the person in charge of construction will note the size and location of the slotted pipeline. It is convenient to know the location of the pipeline when installing the sanitary ware in the future.

Water and electricity installation knowledge 2 Water pipeline installation

Water pipeline installation: material requirements, PPR pipes, aluminum-plastic pipes. Three years ago, most users bought aluminum-plastic pipes. In the past two years, more users have used PPR pipes. Pipes are divided into cold water pipes and hot water pipes. Avoid the use of galvanized iron pipes for hidden pipes.

First, the construction personnel discuss the location and use functions of the water area with the owner through the water and electricity installation construction drawings. Arrange for a plumber to drain and install all faucets and water locations. If there are construction drawings, the placement can be arranged according to the construction drawings. If the waterway function in the construction drawing has been lacking for a long time, communicate with the owner to increase the use of waterway.

Water and electricity installation knowledge 3 Water pipeline inspection

Water pipeline inspection: Water pipeline inspection is very important, which is related to future water pipeline safety hazards. We usually use pressure testing to inspect pipelines. Pressure testing is one of the methods for checking leakage in pipelines. First, use a bet head to bet all the inner wires to death. Use a pressure gauge (usually 12 pressures for home decoration) to test the water. After pressing, check all pipes and joints. The second method is to open the water gate for two days and two nights after taking the gamble, and check all the joints on the third day. I usually adopt the previous method.

Water and electricity installation knowledge 4 Secondary waterproofing

Second waterproofing: After the water pipes are installed, seal all the trunking in the bathroom with a mixture of cement and sand.

After the wire trough and floor filling are dry, clean the floor and walls again. Once the water on the wall and floor is dry, you can waterproof it. It is best to make the wall waterproof one meter high. If there is a wall of furniture on the back of the kitchen and bathroom wall, it must be made full wall. Play the role of moisture-proof furniture. If the ground needs to be filled with slag, it must be waterproofed and then filled with slag. If the slag is more than 10 cm, use dry cement and sand to fill the slag.

Secondary waterproofing of floors and walls should be done at the same time. (Some friends will definitely ask me here. I already did waterproofing once when the ground came into the site. Why do I need to do it again now). The waterproof surface on the ground has been damaged during water and electricity construction, so it must be done again together with the wall. The first time you do waterproofing when you enter the site is to make sure that the ground will not leak. After the pipes are installed, the walls and floors are re-done so that the floors and walls can be more effectively waterproofed.

Water and electricity installation knowledge 5 Wire line slotting

Wire line slotting: After discussing the electrical functions and requirements with the owner, the construction leader will explain to the electrician and ensure the parallel Grooved with vertical lines. Place the switch socket bottom box. The sockets are slotted 40 cm from the ground, the hanging air-conditioning sockets are slotted 2.2 meters from the ground, and the switches are slotted 1.2-1.4 meters from the ground. The switch and socket bottom installation should be slotted horizontally. The kitchen and bathroom must be grooved according to the designed use function.

Water and electricity installation knowledge 6 Wire and circuit wiring

Wire and circuit wiring: material requirements, copper core wires of more than 2.5-6 square meters, and wire tubes of more than 16mm. Wiring requirements: Most electricians do not consider the separation of strong current and weak current, switches, air-conditioning sockets and electrical sockets during circuit wiring. Therefore, grooving also saves a lot of processes. It is required that strong and weak current wiring be separated by 30 centimeters at a minimum. Wire groups of more than 6 square meters are dedicated to air-conditioning sockets, 4 square meters are dedicated to electrical sockets, and switches are dedicated to groups of more than 2.5 square meters.

The air-conditioning cable set should be routed at least 2 meters above the ground. The electrical cord set is routed on the ground, and the switch and lighting cord set is routed on the top of the wall. The switch socket must be installed horizontally and vertically, so that the subsequent panel installation will be flatter. The switches and sockets in the kitchen must be arranged and installed according to the functions designed by the kitchen cabinets. After all the electrical lines are laid out, the construction leader should note the layout and discharge dimensions of the lines, so as to facilitate the later installation of various home accessories.

Recommended hydropower installation companies

Chengdu Hongyu Hydropower Installation Company

Which Chengdu hydropower installation company is the best? Chengdu Hongyu Hydropower Installation Company, this company Founded in 1995, it is a professional installation company specializing in construction electromechanical, hydropower equipment, industrial and civil installations. The company has complete equipment, a complete quality assurance system and a scientific management model. The construction personnel are professionally trained and experienced personnel. .

Chengdu Jixiangyuan Water and Electricity Installation Engineering Co., Ltd.

Which is the best water and electricity installation company in Chengdu? Chengdu Jixiangyuan Water and Electricity Installation Engineering Co., Ltd. was established in 2007. Although it is an emerging enterprise , but it has been recognized and trusted by consumers in the home decoration industry. Mid-to-low-end prices, professional quality and construction, regular product materials, and perfect after-sales service have captured the hearts of consumers.

Chengdu Sisheng Water and Electricity Installation Co., Ltd.

Which is the best water and electricity installation company in Chengdu? Chengdu Sisheng Water and Electricity Installation Co., Ltd. was formerly the construction team of West China Group and was independently registered in 2009. . The company is mainly engaged in house construction, water and electricity installation, house decoration, garden engineering construction, drainage pipe construction, etc. The company is equipped with professional construction personnel and has a humanized service system. There is no flashy form, but all solutions and countermeasures are used to solve practical problems for customers.

Water and electricity installation is a very important part of house decoration. Water and electricity installation also has very high requirements for details. For water and electricity renovation, you must choose an excellent and professional water and electricity renovation company and have professional quality inspection personnel to do a good job. Inspection of hydropower renovation projects, so as to better ensure the quality of our hydropower installation projects.

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