? Hydropower project acceptance process and matters needing attention

Hydropower transformation is a very important aspect of home improvement. The next project can not be started until the hydropower transformation is completed. Once there is a problem with water and electricity in the middle and late stage of renovation, it will be very troublesome to replace it.

First of all, where do you need waterproof?

1, the bathroom floor must be waterproof. Before waterproofing, the base to be waterproof must be cleaned and the surface should be kept as dry as possible.

2. The bathroom wall should also be waterproof. The shower wall should be 180 cm, while other walls should be 30 cm.

3. Another point is very important. In fact, the places where the bathroom leaks are mainly the roots and walls of the upper and lower water pipes, so these places also need to be waterproof for 30 cm, and they must be "full" when waterproof.

4, hydropower transformation, slotting destroyed the original waterproof layer, to redo the waterproof.

5. For those places that need to be slotted and buried with water pipes, waterproof pipes should be buried in slotted pipes to avoid leakage to other places in the future.

6, the kitchen floor can not be waterproof.

7. In the general shower area, all the walls adjacent to bedrooms, storage rooms, restaurants, etc. Need waterproof.

Moreover, the waterproof height is generally above 1.8m, and the exterior wall of the shower area can be made less, because even if there is a watermark, it is invisible outside, but to be on the safe side, it is recommended to be waterproof around1m.

Second, the decoration of water and electricity purchase considerations

There are many kinds of wire products in the decoration market, and the prices are chaotic. It is difficult for owners to choose wires with the same specifications, and the price will vary by 20% to 30% depending on manufacturers. How to judge whether the quality and purchased length of wires meet the standards, the owner must see the following points clearly:

1. Users must check whether there is the "Great Wall Mark" and the production license number on the wire packaging card when purchasing; When checking the outside of the wire, the user must check whether the plastic skin on the outer layer of the wire is bright in color and fine in texture, and whether there is an open flame when it is lit with a lighter. Generally, inferior products use recycled plastics, which are dull in color and loose in texture and can ignite open flames.

2. Look at the length and price. First of all, what do you think of the length of the wire? Some manufacturers make the skin very thick when counterfeiting, and it is difficult for ordinary people to see the tricks inside, but you can count its laps and multiply it by the radius of the whole roll to roughly judge its length. Generally, the price of 60 meters to 80 meters is between 130. Secondly, the owner needs to ask the merchant to cut a broken head and check the copper core material when checking the quality of the wire. Some of them are not regular products, but the copper is black and hard, which belongs to recycled miscellaneous copper. The conductivity is poor and it will be unsafe when heating.

3. Look at the appearance, the owner should pay attention to the appearance of the wire when buying. Good wires are smooth and flat, the insulation layer is not damaged, the logo is clearly printed, and there is no greasy feeling when touching the wires.

4. When buying wires, the owner should pay attention to whether the conductor diameter of the wires is consistent with the indicated certificate. If the conductor section of the wire is too small, it is easy to cause the wire to heat up and cause a short circuit.

It is suggested that the owner must strictly abide by the purchase of wires and make clear the data of family needs. The wires of household lighting lines should be greater than1.5mm2, and high-power household appliances such as air conditioners and microwave ovens should be greater than 4m2. When buying electrical products, we must pay attention to quality and brand. Generally, big brands are still guaranteed.

Three. Price breakdown of water and electricity installation materials-for reference only

Electric power company [contractor]

Project unit price

Underground pipeline 2.5 mm single pipe 232 yuan/meter

Decorative open wire 2.5mm single pipe 222 yuan/m

Open pipe 2.5mm 2 18 yuan/m

Cassette installation 86×86 10 yuan/piece.

Install the opening box 86×86 5 yuan/piece.

Through-the-wall bearing wall 40 yuan/non-bearing wall 15 yuan/.

Box Black Box 200 yuan/Surface Mount 100 Yuan/piece

Ershui Road Reconstruction

Quotation for waterway reconstruction construction

Dark pipe PP-RDNS2.820mm 38 yuan/linear meter.

Open pipe PP-RDNS2.820mm 28 yuan/linear meter.

Dark pipe PP-RDNS3.525mm 55 yuan/linear meter

Open pipe PP-RDNS3.525mm 46 yuan/linear meter.

50 yuan/hole of load-bearing wall through-wall hole

Non-load-bearing wall through-wall hole 20 yuan/hole

Water meter 200 yuan/only

Valve DN25 90 yuan 1.

Valve DN20 70 yuan 1.

Three-lamp installation and panel

Lighting installation spotlights or downlights 16 yuan/piece.

Ceiling lamp 30 yuan/lamp

60 yuan/chandelier

There are extra charges for installing switches and sockets, including 7 yuan for less than 30, 5 yuan for more than 30, and 30 yuan for lamps.

Additional notes:

1. The quotation for hydropower installation includes pipeline, wire, wiring, construction, slotting and pressure test. It does not include tank sealing, waterproofing and sanitary ware installation, and the cost is calculated according to the actual meters.

2. Waterway reconstruction does not include special fittings and valves, and the fittings need to be purchased by the owner.

3. 3 yuan slotting fee will be charged per meter for high-rise reinforced concrete structures, and 3 yuan will be charged per cassette.

4. Hot water pipes are all used for hot and cold water pipes. Because the owner's design is not in place and the pipes are artificially damaged after installation, the door-to-door maintenance needs labor costs.

Note: (contractor) refers to contracting only labor, not materials, that is, contracting.

Four, waterway regulation and acceptance matters needing attention

Acceptance of waterway engineering must understand:

1, commonly used water pipes in the market, such as PPR pipes and aluminum-plastic pipes. It's best to use PPR pipe in the domestic waterway reconstruction (water supply pipe), because it is connected by hot welding, which is watertight for life and has a service life of 50 years.

2. In waterway reconstruction, it is generally necessary to distinguish between hot and cold water pipes. It's hot on the left and cold on the right.

3. Waterway routing and slotting should ensure that the buried pipe is in the wall and on the ground, and should not be exposed after decoration. When slotting, as long as it can be buried in the pipe, care should be taken not to destroy the structural layer.

4. The outlets of hot and cold water pipes are generally hot on the left and cool on the right, and the spacing between hot and cold water outlets is generally 15CM. Hot and cold water outlets must be parallel.

5. After waterway reconstruction, pipeline pressure test should be carried out, and the test pressure should not be less than 0.8MPa.

6. It is best to have a waterway map after waterway reconstruction to avoid "accidental injury" to water pipes during later renovation.

7. The most important thing is the water reform team. It is recommended to carefully choose a professional water reform company!

Five, the correct acceptance criteria for hydropower projects

Of course, there must be no leakage in waterproof works.

Step 1, inspectors start the water retaining wall with a height of 15cm at the door of the inspected room;

Step 2, we put water with the depth of 10 cm in the room and mark the height of the water surface at the same time;

Step 3: After 24 hours, the inspectors will observe whether the water level has changed, and at the same time check whether the ceiling of the same room downstairs is leaking;

Step 4, if the above phenomenon does not appear, the inspectors can consider that the waterproof project construction is qualified; On the other hand, if the above phenomenon is found through inspection, it can be considered that the waterproof project is unqualified. If the acceptance is unqualified, the waterproof project must be redone and re-accepted; Water spraying test should be adopted for acceptance of waterproof construction of light wall, that is, water pipes should be used to spray waterproof coating on the wall continuously from top to bottom for 3 minutes, and after 4 hours, it is observed whether there will be water seepage on the other side of the wall. If there is no seepage, it can be considered that the waterproof construction of the wall is qualified.

The acceptance of power distribution is to make the line unimpeded, without short circuit or interruption. The acceptance personnel shall check the following items in sequence:

1, whether the materials used meet the design requirements;

2. Whether the catheter is fixed;

3, catheter connection is firm;

4, whether there is a joint wire, joint is firm;

5. Is there a connector on the telephone line? If there is a connector, it must be replaced;

6. Is there a connector for TV cable? If there is a connector, it must be replaced, or a separator is used at the connector;

7, cassette installation is square, whether in the required height;

8. Whether the construction team marks the parts where pipelines are laid;

9. Whether the position of the cassette is reasonable, the direction of the line pipe is reasonable, and the position of the line connector is reasonable.

Tip: There is another point that needs attention in power distribution acceptance, that is, the ground wire problem, and the construction personnel should arrange the ground wire according to the construction technology.

Concealed engineering acceptance skills-save drawings and photos

When accepting concealed works, the constructor must be required to provide waterway drawings, and then check them against the drawings. If it is found that the drawings do not conform to the actual situation, it should be put forward immediately, and the construction party should be required to redraw according to the actual situation, because the drawings are an important basis for future maintenance.

However, based on drawings alone, personal feelings are not intuitive enough. It is best to leave photos of all pipeline lines before slotting and burying, and then look at the position of switch or faucet on the wall to clearly judge the location of buried pipeline.

The above is the explanation of the acceptance process and matters needing attention of home improvement hydropower project. After the completion of hydropower transformation, strict construction acceptance must be carried out. Only in this way can we safely enter the next construction process and avoid problems in the later stage.