Odor-proof, waterproof, choking of washing machine, moth-eaten, poor drainage, water leakage and backflow.
Maybe it's not too serious at ordinary times. After a typhoon and rainstorm, I realized how important the "dirty things" at home were. If you want to completely solve the drainage problem at home after moving in, it must be a big project. After all, many of them involve concealed works, and if they are changed again, they will basically "hurt the muscles and bones." Therefore, in the hydropower stage of decoration, it is very necessary to fully consider these problems and arrange and clean them properly as soon as possible. So in the hydropower stage, what are the key points to pay attention to in drainage?
There must be a reverse bend.
Except for the drain pipe of toilet or squatting pan, if possible, other drain pipes must have reverse bending, because reverse bending can effectively block the odor of the pipeline. Caisson bathroom has a large space, so it is very easy to add a reverse bend.
The displaced wall row washing machine mouth should be added with a reverse bend on the wall riser. Some manufacturers have specialized products, and of course, they can also assemble one with pipe fittings on site.
The horizontal branch pipe of the subordinate pipe under the kitchen basin should leave a general backwater bend, so whether there are dishwashers, water purifiers, garbage disposal machines, kitchen treasures, etc. You don't have to worry about the problem of odor in future drainage. Ordinary sewer pipes without backwater bends can be used as the sewer pipes that come with the kitchen basin.
Displacement of floor drain outlet
Especially for the interlayer drainage toilet (there is a drainage pipe at the top of the bathroom) and the living balcony, the developer has reserved the floor drain outlet, but the reserved position may be unreasonable, so it is necessary to shift the floor drain outlet during the hydropower transformation. Two points must be paid attention to when the drain outlet of floor drain is displaced: the diameter and depth of the drain outlet.
The diameter of the sewer should be kept at 50. This is the most common problem I encounter with many netizens, especially in Shanghai. This is related to the 40 sewer pipes reserved in many old houses in Shanghai, which leads many new house workers to use 40 sewer pipes to shift. Why do you want to leave 50 mouths? Because only 50 words can use the standard floor drain core, otherwise only 40 cores can be used. Under the same conditions, 50 cores are definitely faster than 40 cores.
The depth of the drain should be ensured, otherwise the standard core of 50 floor drain can't be installed, and only the ultra-thin core of 40 can be used. There are two reasons why many displaced drainage ditches are shallow: one is that workers are worried that the floor is too thin and the grooves are too shallow, so they have to use flat pipe floor drain shifters, which can ensure 50% drainage ditches and the depth.
There is also a kind of 90-degree elbow used in the replacement port of floor drain in conventional construction, and the elbow has radian, which leads to many floor drain cores not being installed.
The solution is to replace the 90-degree elbow with a straight tee and a pipe cap, so that the depth can be basically guaranteed.
Outlet diameter
Toilets and squatting pans must be 1 10, and the launching caliber of washbasins, floor drains, vegetable basins and washing machines must be 50. The bigger the exit, the better. Washbasin mouth 32. What's the point of leaving 75 mouths? Moreover, 50 ports can be matched with various specifications of sewer pipes, deodorizers and floor drain deodorizing cores, without leaving a big gap and being blocked easily. Even if 75 pipes are widely used in the space below the caisson toilet, it should be reduced to 50 words on it, and the same is true for the vegetable basin.
The above picture shows the remaining 75 openings of the basin sewer. In this way, the gap around the deodorizing sewer pipe is too large, which is not only difficult to block, but also more likely to cause odor or crawl into insects.
Secondary drainage of toilet
In addition to the waterproof layer, the most important problem in all bathrooms is secondary drainage. Dayu's experience in water control tells us that it is impossible to rely on "blocking" water control, and it must be "sparse". The secondary drainage is actually a diversion, so that the water seeping into the bottom can be drained away in time, and it will not be deposited on the downstairs and the external wall of the bathroom to cause water seepage. There are two kinds of secondary drainage in caisson toilet: one is secondary drainage at the bottom of caisson, as shown in the following figure.
The other is the secondary drainage of ceramic tile mortar layer, as shown in the following figure.
The above two kinds of secondary drainage must be carried out above the waterproof layer twice and at the same time, so as to ensure that the caisson bathroom is not easy to seep.
The original developer of interlayer drainage toilet has reserved floor drain. How to do secondary drainage? Firstly, pry open the reserved PVC floor drain and connect the sewer pipe of the floor drain with 50 pipes; Then the ground mortar is leveled to find the slope, and the floor drain is guaranteed to be the lowest point; After passing the waterproof and closed water test, make a small hole at the root of the pipeline to drain the water; Finally, stick the floor tiles, cut off the pipes with excess height, and install the floor drain. If water seeps into the ceramic tile mortar layer in the bathroom, it will flow down from the hole at the root of the floor drain and drain the water in time.
The layout of sewage pipe should adopt oblique tee.
Many washing machine floor drains choke water, and the floor drains in the dry area of bathtub drainage are all caused by unreasonable pipeline layout. As shown below: This is the layout of the floor drain of the balcony washing machine and the drain of the washing pool. The oblique tee should be used instead of the positive tee, so that the washing machine can drain smoothly and there will be no choking phenomenon caused by the instantaneous drainage of the washing machine.
Does the kitchen need a floor drain?
People often ask me this question, and some people think that installing a floor drain is worried that the floor drain will run against the water when the vegetable basin is launched. It's not up to you or me to decide whether to install a floor drain in the kitchen. It depends on how the sewer pipe was reserved in the civil works. Many newly-built kitchens do not have reserved drains for floor drains, but only drain pipes for vegetable pots, and the exposed pipes are 40-50 cm above the ground (pictured). In this case, it is impossible to increase the drain of the floor drain. If the floor drain is reserved by the original civil works, then install the floor drain. Never block it. If the blockage is not good, there is still the possibility of water seepage. For the floor drain, choose a self-sealing odor-resistant floor drain that does not flow. Because the kitchen doesn't often run water, the water seal floor drain will evaporate quickly in summer, and the water seal will fail to deodorize.
Central air conditioning condensate discharge
Attention should be paid to deodorizing the drainage of indoor condensate pipes in central air conditioning, because it is built by central air conditioning, so it is easy to be ignored by many people.
4 in the above picture is the condensate drain pipe of the central air conditioner. Please pay attention to the layout of this pipeline. Conditional must be discharged to outdoor air conditioning condensate pipe or outdoor machine platform with floor drain. Try not to discharge to the floor drain outlet of the bathroom. If it is really impossible to be discharged outdoors, it should also be noted that it should be connected to the floor drain riser by reverse bending (below 1 and 2). Instead of connecting it to the horizontal pipe of the sewer pipe (figure 3 below), otherwise the smell will string to all rooms. Of course, it would be better if the condensate pipe riser has its own reverse bend, thus avoiding these problems.
Basement drainage
It is common for the basement to be soaked in water when typhoon weather comes or it rains heavily, all because the drainage is not considered in place when decorating. So how to make the basement waterless? Don't have any floor drain except the bathroom, remember! If there is a kitchen, a western restaurant, a laundry room and a sewer pipe, open pipes should be used, and check valves and globe valves should be added. Close the valve before the rainstorm and typhoon come.
Do not leave the bathroom. Cover all drainage pipes in the original bathroom with pipe caps. If you really want to leave, you must use the sewage lift pump to get rid of it, without worries.
Open balcony drainage
The biggest problem of open-air balcony is the return of typhoon and rainstorm. There are three main reasons for backflow: first, the threshold under the door leading to the balcony is too low, and rain and rainstorm will inevitably flow back indoors.
The second is that the downpipe on the roof is directly discharged to the terrace, which is also relatively common. During the rainstorm, all the water on the roof is discharged to the small terrace, and the floor drain is inexhaustible, which will inevitably flow back. Be sure to change the downpipe directly outside the terrace.
The third type is that the terrace floor drain outlet is not well drained or there is no overflow. Open-air balcony must use a large floor drain, at least150 mm. In addition, there should be an overflow on the balcony wall, and the height of the bottom of the overflow should be lower than the water retaining threshold, so that if there is a floor drain, the overflow can help drainage and will not cause backflow.
Roof drainage
The roof leakage is mainly caused by poor drainage. In the past, old buildings and old houses were not waterproof at all, because the design was reasonable, and the rain was quickly drained away. Poor drainage on the roof is often due to repeated waterproofing without cleaning the original waterproof layer, resulting in smaller and smaller drainage pipes, and then garbage on the roof blocks the drainage pipes. Before the rainy season comes, the garbage on the roof must be removed to prevent rainwater from gathering at the lower outlet and causing poor drainage.
To tell the truth, drainage in the home is really important, but most people will ignore it. Any of the problems mentioned above will bring a lot of trouble to daily life. Therefore, we can't just pay attention to the main material, face value, color, soft clothes and so on. In the process of decoration, we must pay attention to basic projects such as water and electricity. The first choice of a house is to use it, and the most important thing is to be practical, comfortable and safe. Second, it is to look good. What's the use of a high-value house if the drainage is not smooth, and there is anti-water, anti-taste and backward flow?
Message from the editor in charge of Niu Jiao.
People have three treasures, "sweating, farting and sneezing". A house may be like a human body. If it can be discharged and arranged smoothly, it is healthy. Among the readers, there are many readers who are ready to decorate or are decorating. How much decoration experience and life experience they have depends on the questions they ask. Drainage, although only two words, involves many aspects of decoration. Every detail of the decoration can't be let go.
The content is provided by the decoration supervisor of the user speaker supervisor. For more questions, let's live in the APP and communicate directly with the host ~