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The sunken toilet: refers to the part of the bathroom structure that is partially or wholly lowered from the floor of the corresponding floor (typically 40CM) when the main body is built, so that the horizontal drainage pipe of the bathroom is buried in it, and then backfilled with lightweight materials, the structure is Only one hole for the drainage riser should be used. The drainage riser has a reliable corner setting, which can be covered by external curved partitions when the owner decorates.
Roman Leo Tiles
Sunken toilet benefits:
1. Drainage arrangement for the convenience of the bathroom, operating in this floor, does not involve downstairs.
2. Reduce bathroom noise.
3. The top is flat and there is no drainage pipe.
Sunken bathroom drawbacks:
1. Waterproofing is more troublesome and decoration costs are higher.
2. There are hidden dangers of water leakage. Maintenance is troublesome because the sandstone layer filled in the middle will sink gradually after a long time. There will be cracks in the upper cement layer and waterproof layer, and the water will leak down to the filling area. Because there is a waterproof layer below, water leakage does not go out. As a result, it accumulates in the filling layer. After a long time, the entire filling layer is filled with water. In the end, as the time goes on, the following waterproof sinks will also leak, and a large amount of accumulated water will spring out.
The solution:
It is necessary to make the surface beveled after sinking on the ground. The floor should be made into a slope, and the lower pipe should be made to be the lowest. Then it should be opened in the ground next to the sewage pipe, wrapped in a stainless steel net, and spread out with cobblestone water, and then used again. Sand and stone cover, if the bathroom area is large, but also to connect the flow tube, the subsequent process is exactly the same. The advantage of this process is that even if leakage occurs, the water entering the subsidence zone will flow out of the sewer and no silting will occur. This is the key.
The correct filling method for sunken toilets:
Step 1: Make waterproof coating twice. The waterproof must be done together with the wall. The height of the wall should be higher than 40 cm above the caisson. To ensure that the upper layer of water does not spread to the surrounding, can only drain to the floor.
Step 2: Red brick or concrete is used to cut off the overhead, and the caisson is divided into several 400*400 grids. Many people do not do this step. Actually, this is a very important step. With such a load-bearing partition, the above concrete layer will not fall. Otherwise, the toilet ground sinks and leaks after a few years.
Step 3: Fill ceramsite or coal ash slag. Put the moisture-proof ceramsite and the grid inside, do not press too tight, it is natural, because it is not load-bearing, only to absorb moisture.
Step 4: Spread the reinforcement. A layer of 200mm*200mm square reinforcement mesh consisting of 5mm diameter steel bars was placed over the grid to ensure that the concrete layer was firm and evenly loaded.
Step 5: Invert the concrete layer and level the C25 fine stone concrete 40 mm thick. This layer is to do sloppy slope, do waterproof paint twice, even with the wall to do, after the waterproof layer is dry, it is necessary to brush it again to protect it, so as not to scratch the floor tile and tile. Only after the protective layer is dry can you go to the next person and do the tile work.
FAQ solution
1. The waterproof layer of coated membrane is hollow and air bubbles: The main reason is that the grassroots floor is not cleaned cleanly or because the screeding layer is moist, the moisture content is higher than 90%, and the moisture content test is not carried out before brushing, resulting in empty drums. Drum kits. Therefore, before painting the waterproof layer, the base must be cleaned and tested for moisture content.
2. After the ground surface layer is finished, the water storage test is performed. There is a leakage phenomenon: after the waterproof layer of the coating film is finished, the first water storage test must be performed. If there is a leakage phenomenon, the specific part of the leakage can be repaired, or even All rework until the impoundment is 2cm high and no leakage is observed for 24h. After completion of the ground surface layer, a second water storage test was conducted, and no leakage was observed for 24 hours as a final pass. Fill in the water storage inspection records.
3. Poor water storage and drainage on the ground: The main reason was that when the ground cushion was used, the slope was not designed according to the design requirements, and no remedial measures were taken when the screed was used. This caused backslope or unevenness and water retention. Therefore, before doing the coating waterproof layer, first check whether the slope of the base layer meets the requirements. If it does not comply with the design, it should be treated and then be waterproof.
4. After the secondary storage of the ground was completed, it was qualified and accepted, but after the use was completed, leakage still occurred in the toilet: mainly the connection between the toilet drain outlet and the sewage socket connection was not tight, and the construction seal was not used after the connection. Sealed dense, causing leakage after use. After the sanitary ware is installed, it must be carefully checked whether each interface meets the requirements and the next procedure is followed.
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