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The use of water and electricity is indispensable to life, so water and electricity are also a very important project in the renovation. Usually, for the aesthetic effect of the home environment, the hydropower pipeline will be concealed. If the construction does not pass, then it is necessary to open the maintenance later. Very troublesome. How should the hydropower be constructed in accordance with the regulations? Let's take a look at the hydropower construction standards .
Hydropower Construction Standards I. Waterway Construction Specifications
1, position positioning
The ink line can be used as a reference when planning the waterway. It is called the pay-off line. There is at least a 1m high reference line, a low level outlet line about 0.4m high, and a 1.4m high switch horizontal line. In order to ensure the same height on both sides of the wall, infrared level can be used to assist.
2, the water top
It is possible to walk the top or take the waterway. There are no relevant regulations. However, if you go to the top, although the cost is high, leakage will be easier to maintain.
3, cold and hot water pipe distance
Cold and hot water pipes cannot be placed in the same tank, because their expansion and contraction rates will loosen and cause empty drums. Need to be about 20 centimeters apart, the general practice is based on 15 cm of hot and cold water outlet spacing to operate, if more than 20 cm, need to add a welding head.
4, water depth groove
The diameter of the water pipe is generally 2 cm. The hot water pipe trough is 1.5 cm deeper than the pipe diameter, and the cold water trough is 1 cm deeper.
5, the completion of the water pressure test
After the completion of the waterway, pressure testing will be carried out after 12 hours. This is the maintenance period after water welding. The test pressure can achieve the purpose. The test pressure is 1.5 times the working pressure, and the water pressure does not exceed 0.4 MPa. , pressure to 0.6 MPa pressure on the line. Twenty minutes after pressurization, it is acceptable if the pressure does not drop below 0.05 MPa.
Hydropower Construction Standard II. Circuit Construction Specifications
1, wire color separation
The wire color separation is basic, otherwise it will cause circuit safety hazards, the blue line is zero, the red line is fire, yellow or yellow-green is the ground line.
2, wire diameter
Common sockets use 2.5 square millimeters of wire, kitchen, cabinet air conditioners use 4 square millimeters of wire, and lighting uses 1.5 square millimeters of wire.
3, use the lock mother
When using the cable, you must use the lock mother to avoid the distance between the bottom box and the line tube. Otherwise, the cable will be fixed after the slot is sealed, and the line cannot be changed later.
4, slot depth
The diameter of the conduit is generally 1.6cm, and the depth of the conduit is 1.2cm deeper than the diameter.
5, steel wall bearing can not be cut off
Do not open the transverse groove on the load-bearing wall more than 1 meter, and you must not cut off the steel bars. Otherwise, it will affect the safety of the housing structure.
6, wire connector
Wire joints are not well connected, prone to excessive resistance, open circuit and other issues, you can use the terminal connection method, extended connection method, branch connection method, multi-core cord and single strand copper wire connection and other methods.
7, winding insulation tape
Insulation tape insulation resistance to achieve 80% of the original insulation, pay attention to the wire was not more than 45 degrees obliquely wrapped, half of the tape to overlap, and to be wrapped around three times, but also wrapped in the insulation of the skin 3-4 Metrics only.
8, line tube cornering
The bend radius of the wire tube is preferably 6-10 times of its diameter, that is, the wire tube is 1.6 cm straight, and its bending radius is 10-16 cm.
9, strong and weak electrical spacing
The distance between strong and weak electricity should be at least 30 cm. The strong electric wires such as lighting and sockets must not be in the same line or in the same slot as the weak wires such as network cables, telephone lines, and video cables. At least 30 cm spacing must be maintained to avoid signal interference.
Editor's summary: The above is about the introduction of hydropower construction standards , in the decoration must be done well in the construction of hydropower hidden projects, water pipes, wires and other materials can not save, to choose a good quality. For more decoration knowledge, please pay attention to our website information.
Hydropower construction standards
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