Why must hydropower transformation be horizontal and vertical? Is it for more money?

My friend recently complained to me that when it comes to hydropower renovation, the decoration master insists that the hydropower wiring should be horizontal and vertical. However, a search on the internet also has different opinions: it is said that it is a lie anyway, and the decoration company did it in order to let the owners pay more; It is said that horizontal and vertical are for the convenience of subsequent construction, drilling holes, avoiding conduits and finding some points for future maintenance.

I can't pay attention, I can only ask my opinion. Indeed, whether hydropower transformation is horizontal or vertical has always been a civil dispute. I specially asked several netizens, and they all had different opinions.

[What do people who have been there say]

@ 京京京京京京: For concealed works such as water and electricity, you should be well-behaved and meticulous, so that you can save trouble in case of problems, unlike furniture, you can change it if you don't want to use it.

@ Superman Dream: The straight line between two points is the shortest. I think the reason why the water is at the top is this: if it leaks, it will only affect your home, and the gypsum board will be easier to repair, otherwise it won't cost you so much money to go downstairs, and you have to plan the floor. I don't know if this is right.

@ Yang: Just one looks good and collects more money. Which line is broken in the future cannot be changed at all.

@ Daxunge: I think it's good to be horizontal and vertical. I am young, and I have to nail soft clothes. Let's start here. The switch panel is generally more than one meter. The project manager told me that it is not a problem to nail it higher than the switch panel, as long as it is not directly above it.

@ Hedgehog Tree Tree: Most companies will have a rigid rule that water and electricity are horizontal and vertical, and most guerrillas will go nearby. Now that the house is installed, not many people will nail and make holes in the wall.

Everyone has a different opinion. Most of the focus is on whether the hydropower connection adopts horizontal and vertical connection or two-point connection. Some people may not understand these two wiring methods. Let me explain it to you first.

[Horizontal and Vertical Wiring Modes]

Horizontal and vertical is a description of pipeline wiring mode, that is, when the pipeline is hidden, the wiring should be horizontal, horizontal and vertical, even and consistent. This method has several advantages:

1, unified pipeline routing is beneficial to subsequent construction, and electrical appliances need to be installed at home in the later period. When drilling a hole in the wall, avoid the area where the catheter is located.

2. Horizontal and vertical wiring is convenient for future maintenance and repair, and the pipeline can be clearly seen from the hydropower diagram.

3. Compared with the two-point method, the construction difficulty is relatively low. In the early stage, the pipeline position can be marked on the hydropower diagram, which is convenient for designers to calculate the conduit quantity.

However, the horizontal and vertical wiring method has been criticized by many owners because of its shortcomings: more pipeline materials are used and the material cost is increased.

Horizontal and vertical wiring is often used by some unprofessional decoration companies and masters because of the shortcomings of using more pipeline materials. In order to pursue horizontal and vertical, increase the use of materials and earn money from owners who have no conscience.

[Two-point one-wire connection mode]

Two-point and one-line wiring, as the name implies, is to use the principle of shortest straight line between two points to arrange pipelines. The advantages of this method are as follows:

1, the straight line between two points is the shortest. Using two-point and one-wire wiring can save materials, thus saving budget.

2, few turns, it is easier to drag the line in the future, and it is not easy to get stuck, which can effectively protect the pipeline.

All wires have a certain resistance. The longer the pipeline, the greater the resistance and the greater the heat generation of the wire. The two-point pipeline is the shortest, which can reduce power loss.

However, there are some reasons why the two-point style is not recognized by most decoration companies, because the shortcomings are also obvious:

1, the construction of two-point and one-line layout is difficult, uneven circular arc is not convenient for drilling in later construction, and designers are not good at calculating the number of pipelines.

2. Post-maintenance work is troublesome, and finding pipelines is a big problem.

[Old drivers in decoration industry have something to say]

But in theory, according to the Code for Construction of Residential Decoration Engineering (GB5024-2002), one of them says that the pipeline should be laid horizontally and vertically.

Let me talk about the advantages and disadvantages of my understanding:

Advantages of "horizontal and vertical":

1, the site is neat and beautiful, which is conducive to protecting the pipeline;

2. It is convenient for the subsequent construction, and it is easy to locate the hole and nail on the wall, avoiding the catheter;

3, it is convenient to find some points for maintenance, and the line direction can be roughly judged through the socket node;

Disadvantages of "horizontal and vertical":

1, which increases the cost and requires more materials than two points and one line;

2. It is not easy to change wires when the catheter turns;

Personally, I think it is necessary for water pipes and waterways to be "horizontal and vertical", although it will increase costs. However, some decoration companies are "horizontal and vertical" in order to increase projects, which is really easy to attract people's criticism. Needless to say, there are so many wires in the right-angle conduit that they can't pull it if they want. See some photos, the ground is full of pipes. One conduit has one route, but it is no problem for a conduit to take three routes as well, as long as it does not exceed 40% of the cross-sectional area of the conduit.

If the ground circuit has the conditions, you can go between two points, turn a little less and try to turn as big as possible. There should be as few long transverse slots on the wall as possible, especially the load-bearing wall.

If there is a water pipe, the kitchen and bathroom should go up as far as possible. Personally, I think it is still convenient to maintain. Of course, some people say that it is more stable to be buried underground. I think the water pipe quality of PPR is ok now, but after the waterway construction is completed, the suppression test must be done carefully, otherwise the water seepage and leakage loss will be huge.

In addition, I would like to remind you that it is recommended to take photos after the water circuit is built. It is best to put it in the cloud to avoid losing photos because of changing mobile phones and computers. After the latex paint is on the wall, there are no water pipes and wires at all. After a long time, you can't remember the direction of the line at all. This is also one of the advantages of being horizontal and vertical, and you can roughly judge the direction even if you don't leave photos.

If nothing else, I will nail a decorative painting on the wall and I won't worry about wires and water pipes (some friends around me have blown up water pipes).

In a word, hydropower transformation is a hidden project, so we must pay attention to it so as not to bring unnecessary trouble to our future life.