Why is it easy to go against the current on the second floor? Is there a solution?

Many friends bought the second floor and found there were hidden dangers or risks. In the anti-water accident, kitchen sewage overflowed from the sewer pipe, feces were poured into the room from the toilet, and some of them spilled into the living room and bedroom. If the owner happens not to be at home, the sewage will soak the whole house and damage the decoration, furniture and other things, causing great losses. Some have happened many times. Many prospective owners on the second floor are depressed and even fidgety. The second floor should actively look for hidden dangers or causes of anti-water, negotiate with developers, property and upstairs residents to prevent accidents from happening or happening again, and claim losses. In fact, generally speaking, the probability of anti-water is very small, so don't worry too much. Simply introduce some basic treatment methods, which can deal with most backwater problems. It is also applicable to the overhead floors on the first floor, the first floor or the second floor of the store.

1. Main reasons and circumstances of defection

In the case that the first floor is launched independently, the second floor is the lowest point of the whole floor pipeline. When the bottom of the pipeline is blocked or the drainage capacity is insufficient, the sewage in the drainage riser accumulates and the water level rises. When it is higher than the second floor, the sewage in the pipeline will flow back to the second floor from the kitchen sewer, toilet or floor drain on the second floor. Kitchen and toilet accidents account for about half.

Generally speaking, the main situations of anti-water are:

1 The design and construction problems of the pipeline include: the pipe diameter is too thin, the ventilation pipe has problems, the buried pipeline is damaged, there are obstacles in the pipe, the horizontal pipe at the bottom is too long, there are too many bends, the turning angle is too sharp, the slope is not enough or even the slope is reversed, the distance between the lowest horizontal branch pipe and the bottom of the riser or the horizontal pipe at the bottom is not up to standard, and the elbow radius is too small when the riser turns to the horizontal (the standard is two 45-degree bends or four-diameter big bends or reducing elbow). It is suggested to study the chapter "Drainage" in GB500 15, Design Standard for Water Supply and Drainage in Buildings. It should be noted that even if it meets the standard, there is a small probability of water backflow. Part of the pipelines on the second floor are completely up to standard, the distance from the horizontal pipe to the sewage well is short, and the flushing capacity is sufficient, so the risk of water resistance is very small, so the owner can rest assured. The three standpipes, which are respectively communicated with the snorkel at the bottom of the sewage pipe, also have strong drainage overflow function.

2. Construction waste is blocked. Some workers have bad habits during the construction and decoration stages. Dumping construction waste residue such as cement glue into the sewer is easy to block the pipeline and cause backflow, or stick to the inner wall of the pipeline, which makes the actual pipe diameter smaller, reduces the sewage discharge capacity and causes backflow hidden danger. In fact, the normal pipeline has a strong scouring ability and washes away some slag, otherwise backwater accidents will be more common. The experience of "avoiding the decoration period, the blank must be closed and the opening should be cleared first" is very reasonable. Some high-rise rough houses will go through a long renovation period. Hardcover rooms rarely have this problem.

3 the upstairs residents use it improperly or carelessly, and the owners or properties neglect maintenance. Sanitary napkins, plastics, towels, hair, bottles and cans and other sundry garbage fall into the sewer through the toilet. Where toilets are widely used, the situation is better. The inside diameter of the toilet is only a few centimeters, and large debris will get stuck in the toilet. After the renovation period, the situation of toilet blockage will be less. Upstairs, the whole bucket of water is poured into the toilet, and the riser instantly flows too much or generates strong pressure, resulting in backflow and bubbles. The food residue in the dishwashing basin is poured into the kitchen pipeline, and the oil stain itself is easy to coagulate and solidify to form dirt or blockage, while the property is neglected or incomplete.

Before choosing the treatment scheme, it is best to find out the situation or possible reasons of anti-water, and it is best to find out your own apartment type, the total number of high-rise buildings, the age of the room, the downstairs situation, the location of the bathroom and kitchen, the material of the pipes, the indoor and outdoor pipes, whether it has been decorated, the sewage well where the sewage flows, and so on. You can directly see the pipeline situation in the embryo room, and you can find the archives of the property or the Housing and Construction Bureau to copy the drainage drawings of dozens of floors in the whole house.

2. Rectify, maintain and dredge pipelines, and use drainage pipelines in a civilized way.

Find a developer or property first, especially the newly bought house and the house within the warranty period, and try to let the developer solve the problem first. If there are problems in the design and construction of the pipeline, it should be repaired or modified to at least meet the water construction standard and pass the ball pass test. Once the rectification, developers can be required to substantially increase the slope of the horizontal pipe, reaching several times the national standard, leaving room, and the national standard is sometimes not enough. There may be sealing rings or deposits protruding from the inner wall of the pipeline at the joint of the pipeline, which will affect the passage of sewage, especially dirt. If the horizontal pipe is blocked, it is necessary to remove the protrusion at the joint and greatly increase the slope. Cast iron pipes with horizontal pipes at the bottom can be disassembled one by one. You can ask the property or hire the relevant company to disassemble and clean the cast iron pipe and then put it back. The vehicle-mounted high-pressure water jet dredging machine has strong dredging ability, and the dredging effect is more thorough than that of the spring dredging machine without damaging the pipeline.

The property should be diligent, dredge and maintain the pipeline, and if possible, buy and use a high-pressure waterwheel dredge. Pipes that are easy to backflow should be inspected and dredged to prevent backflow. In case of anti-water, the property should arrive immediately, notify the upstairs to suspend water use or close the unit water supply valve to stop anti-water, dredge the pipeline and clean it up. If losses are caused to the owner, compensation shall be made according to law. Property should also remind and urge community owners and residents to use drainage pipes in a civilized way.

It is not only a moral requirement, but also a clear legal obligation for upstairs owners and residents to use drainage pipes reasonably. Let the property post eye-catching tips in eye-catching positions to remind residents to use pipes reasonably according to law, and drainage pipes are not trash cans. The signboard can be a permanent plastic signboard or a metal signboard. The words on the signboard are, for example, "Dear friends, for the normal use of the drainage pipe, please don't throw anything other than toilet paper into the toilet, and don't pour food residues into the kitchen pipe, otherwise the drainage pipe may be blocked and backfire may occur. Thank you for your support. " You can also add "if losses are caused to the relevant households, compensation shall be made according to law." Or the owner can stick it on the elevator door or car himself. Property group sends short messages, owners, etc. You can add a reminder. Let all owners and tenants understand that it is illegal to use drainage pipes indiscriminately.

The laws governing the use of drainage pipes by neighboring parties are as follows:

Article 83 of the General Principles of Civil Law stipulates that the neighboring parties of real estate should correctly handle the neighboring relations in terms of water interception, drainage, transportation, ventilation and lighting in accordance with the spirit of facilitating production, life, solidarity and mutual assistance, and fairness and reasonableness. If it causes obstruction or loss to the neighboring party, it shall stop the infringement, remove the obstruction and compensate for the loss.

Article 86 of the Property Law stipulates that the owner of real estate shall provide necessary convenience for the neighboring owners to use water and drain water. The utilization of natural running water should be reasonably distributed among the adjacent owners of real estate. The discharge of natural running water should respect the natural flow direction.

Article 92 of the Property Law stipulates that the owner of real estate uses adjacent real estate for water use, drainage, passage, pipeline laying, etc. We should try our best to avoid causing damage to neighboring real estate owners; If damage is caused, compensation shall be made.

Article 6 of the Tort Liability Law stipulates that if the actor infringes upon the civil rights and interests of others due to his fault, he shall bear tort liability. If the actor is presumed to be at fault according to the law, and the actor cannot prove that he is not at fault, he shall bear tort liability.

In case of serious accidents or losses, the relevant responsible party has the obligation to compensate. If the pipeline design and construction are unreasonable, the developer shall bear the responsibility. Septic tanks, sewage wells or public pipelines are blocked, or the property fails to fulfill its obligation of dredging. If the construction waste is blocked, the upstairs decoration households will bear the responsibility, and the domestic waste is blocked, the upstairs households will all bear the responsibility, unless the relevant parties can provide evidence of no responsibility or no fault. If the decoration or furniture and appliances are flooded, causing heavy losses, it is suggested to keep the evidence and bring a lawsuit to the court, asking the responsible party to compensate for the losses. Related matters can be entrusted to a lawyer, and the decoration expense documents should be kept. As long as the evidence is sufficient, the court will certainly support it. There are some ready-made cases online, and 90% of the losses can generally be compensated. Compensation will be executed by the court, and there is no need for upstairs residents to pursue it. The second floor may not care about compensation, but compensation is a warning and education to the property and residents. If you lose money by resisting water once, you can sue for compensation once.

You can find the government hotline 12345 or the Housing and Construction Bureau for rights protection. You can defend your rights on TV. Under the pressure of public opinion, developers or property or functional departments or communities will try their best to solve the problem.

The second floor is at the bottom of the pipeline, so you can pay more attention to the pipeline and supervise the property. If you find that there is no water in the toilet or kitchen, call the property management immediately. Every once in a while, the oil stain in the riser can be washed with 60-degree hot water or pipeline dredging agent on the second floor to prevent oil stain from condensation and blockage. When operating, be careful not to burn or corrode the pipeline. When residents on the second floor leave home for a long time, pay attention to using network monitoring to check the situation at home.

As long as the property is cleared in place and all the residents don't mess around, there will be no rebellion on the second floor.

Three transformation measures.

Thousands of years ago, Dayu paid attention to dredging in water control, and drainage was the main waterproof measure, supplemented by plugging.

There are many problems in the kitchen, and it is easy to deal with them without decoration. Generally, overflow pipes are installed. Those who can do the overflow pipe should try to do the overflow pipe, which completely solves the problem and is better than all kinds of check valves. The check valve prevents water from flowing back to the third floor, which violates the spirit of civil law. Sewage from upstairs will leak down and pollute the ceiling and walls. If the kitchen outlet pipe is vertical, install an inclined tee at the bottom of the sewer pipe, and the branch port is connected with the overflow pipe and extends to the outside wall or equipment platform (hidden and invisible). If the kitchen outdoor pipeline is horizontal, a straight tee can be installed, and the branch pipe is connected to the elbow and then to the overflow pipe, which is higher than the outdoor horizontal pipe. During normal use, the sewage from the sink will not overflow into the sewer. The ball valve may or may not be installed between the tee and the overflow pipe. The overflow pipe only extends out of the outer wall for a short period, and the property will generally not object. The protruding part can be painted with the color of the external wall to reduce the impact on the appearance. When the bottom of the main pipe is blocked, the sewage flowing back to the second floor pipeline in the main pipe overflows from the overflow pipe and will not flow back to the dishwashing pool. At the same time, overflow is also a warning signal to stop the reverse flow. After clearing this attribute, you can restore the pipeline. The smell of kitchen sewage is light, and it flows back once every few months or years, with less overflow times and little impact on the public environment. The diameter of the pipe and tee is equal to 50mm, and ask the plumber to do it.

Kitchen overflow pipe

The main scheme of toilet includes independent sewer pipe, overflow pipe, water retaining wall and overflow pipe, backflow prevention alarm device, etc.

Independent pipes have a great influence on the opposite side, and cannot be changed without the consent of the property or other owners. Downstairs is a shop or lobby, and the pipes may not be changed. If we change the independent pipeline, we can also make an overflow pipeline for the third floor. Otherwise, the sewage will leak downstairs after the third floor is reversed, and the ceiling will be damaged. Sewage will produce harmful bacteria and mold on the roof and walls, which is difficult to clean and pollutes the indoor environment. Just change the pipe and find a plumber.

The opposite side of the overflow pipe has little influence, and the property and other owners generally do not object. There are many schemes. The riser on the raised floor can be used as an overflow pipe with a trap (deodorization). The overflow pipe on the second floor can extend from the main riser to the external wall or equipment platform (hidden in appearance), and a trap can also be installed. , 75mm in diameter, usually does not overflow. When the bottom is blocked, sewage overflows from the overflow pipe and will not pollute the room. The property can be found, dredged and cleaned in time, with double functions of overflow and jam alarm. Because of the low probability of water resistance, the frequency of sewage overflowing outside is very low, and it is treated in time, which has little impact on the public environment. If the pipeline is laid below the second floor, the consent of the first floor is required. Ask a plumber to do it.

The water retaining wall scheme is mainly to deal with the small probability water resistance risk in the finishing room. Some people found hidden dangers after renovation, some areas require hardcover delivery, and more and more people buy hardcover houses. Make a water retaining wall at the entrance of the bathroom to stop the sewage, and conversely, let the sewage be discharged from the overflow hole (pipeline) to the outside. The nozzle only extends out of the outer wall for a short period, and there is no sewage and smell at ordinary times. Others generally don't object. Going against the current, the sewage only reaches the bathroom that is not afraid of flooding, and the living room and bedroom are safe. After the sewage flows outdoors, the property can be found in time and dredged immediately. After the outdoor sewage is cleaned in time, it has little impact on the public environment. The upper end of the water retaining wall is semi-circular or circular, which has little influence on access, and the wall height can be appropriately reduced according to the terrain slope.

If you feel that the probability of backflow is very small, and you are unwilling to destroy the decoration and install an overflow device, but you are not completely at ease, you can install an anti-backflow alarm device. There is an electronic overflow alarm with high-definition monitoring at the door of the bathroom, and the mobile phone is connected through WiFi. When the mobile phone calls the police, turn on the camera to confirm (a sawdust or plastic buoy can be placed on the floor). Overflow alarm combined with high-definition camera can basically eliminate false alarm. Timely discovery and immediate disposal can greatly reduce the loss of flooded decoration furniture. At the same time, the entrance door can be equipped with intelligent door locks. Once the situation is discovered, if the owner is far away, you can dispose of the property as soon as possible with the password. If the sewage flows out slowly, the property or itself will have time to dispose of it. This can greatly reduce passivity and improve psychological security. Pay attention to privacy protection when using cameras near the bathroom.

The check valve assembly of toilet check valve may cause blockage, or the effect is not ideal, so it is not durable. Install as carefully as possible.

The above are some mainstream simple schemes, and most of the two-story waterproofing problems have been solved enough. The details of the scheme may need to be adjusted and modified according to the specific situation. If the problem is more complicated, you can negotiate with developers, property and neighbors.