What is the overhead sink of the toilet sink

Toilet sink refers to the discharge of toilet sewage or floating debris. In the past, the non-standard practice was to pour decoration garbage directly into it, and pave the floor tiles with cement and sand. Later, considering the load-bearing and water accumulation problems, lightweight ceramsite backfill was used, and the gap between the ceramsite grains was convenient for water to seep into the ground and drain out (overhead meaning).

Both of these methods should pay attention to the secondary drainage problem at the bottom of the sedimentation tank, the nozzle is easy to be blocked by the dust and cement mortar flowing to the bottom, and it will also cause blockage over the years.

Toilet sink overhead is an improved practice to overcome the drawbacks of backfilling, used for large bathrooms and kitchens that need to be cleaned and maintained frequently, and it is still subject to technological progress and cost reduction in the family.

Before the overhead, the prefabricated slab should be poured with reinforced concrete, the bottom of the sinking tank is built with red bricks to support the cement slab, the nozzle of the secondary drainage is placed at the bottom of the sinking tank (some rough houses do not have it), the base of the sinking tank is cleaned, the slope is passed through the cement sand, and the waterproof is brushed, so as to ensure that the water that seeps down gathers to the secondary drainage nozzle. Then cover the cement board above the sedimentation tank, pass the cement sand, and the ground and wall will be unified and waterproof again, and the floor tiles and wall tiles can be paved.

Disadvantages of backfill method: 1. The natural settlement of the material causes cracks in the surface waterproofing, and the water leakage soaks the backfill material, which increases the load, resulting in greater settlement, and even cracking of the pipeline, and finally the waterproofing of the lower layer fails early and leaks; 2. The leakage can only be found after the leakage has occurred and then make up for it.

Overhead toilet method: use red brick or concrete pouring to make the partition overhead, and divide the caisson into several grids, which can not only reduce the weight of the concrete poured on the partition but also play the role of waterproofing, otherwise there will be cracks on the bathroom floor for a long time, causing damage. Then fill the ceramsite into the middle of the lattice to absorb water.

Next, a grid made of steel bars is laid above the lattice to increase firmness and ensure that the poured concrete is evenly stressed. When pouring the concrete layer, the ground should be flat, and this layer should be waterproof paint on both sides, and the waterproof layer should be painted again after the waterproof layer is dry, so as not to cause damage to the waterproof layer when laying floor tiles.

When pouring cement mortar, the floor drain and pipe mouth should be sealed well to prevent falling and affecting drainage. It is necessary to pay attention to the secondary drainage problem at the bottom of the sedimentation tank, the nozzle is easy to be blocked by the cement mortar flowing to the bottom, which will cause blockage for a long time. The treatment method of overhead waterproofing has a better waterproof effect, a longer service life of waterproofing, and is also convenient for later maintenance.

Therefore, Feimojun suggested that the bathroom should be sunken overhead waterproof.

The sinker in the bathroom is best treated overhead. Some companies use waste backfill in order to save costs, and there is a big hidden danger in the future, and if the surface leaks, it cannot be discharged through the secondary drainage.

In addition, before the sinking tank of the overhead toilet, it is necessary to do a good job of secondary water treatment and secondary waterproof treatment, and then overhead and cement sand leveling, and then do ground waterproofing (that is, overhead layer waterproofing) and finally stick floor tiles. Don't let bad renovation companies backfill the sedimentation tank with scrap or garbage.

In the sedimentation tank, the developer will usually reserve a secondary outlet for the owner, and if there is no one, a small opening can be made on the side of the drain.

It is the caisson of the bathroom, which sinks dozens of centimeters compared to the indoor elevation, mainly considering the drainage of the same floor, and fills it with carbon slag after the pipe is laid out in the box.

The bathroom overhead does not resurrect the actual practice, too superficial, no effect at all, you backfill is also afraid that the developer board is crushed, you are endean, the developer leaves 400 hello to install the pothole, the developer once poured on the anti-proof than you do waterproof on the shelf, he is not the last drain pipe to punch the hole, the sand cement is waterproofed and waterproofed will not leak, as long as there is no construction joint, I think that the waterproof again and again will make him backfill the down-to-earth point, because you are down at that point of the stool, If you want to do the overhead without doing the stool, the waterproof is not good, if the overhead waterproof treatment is not good, the overhead below it will not become a suction tank, all of which are overhead so waterproof that it is easy to do some, and the overhead toilet can,

You are referring to the way the bathroom has a sedimentation tank, which is a frame-type underhead underneath.

It is easy to maintain after the overhead, if you use waste bricks and waste building materials to fill and sell, it will be very troublesome to overhaul in the future.

Toilet sink overhead is an improved practice to overcome the drawbacks of backfilling, used for large bathrooms and kitchens that need to be cleaned and maintained frequently, and it is still subject to technological progress and cost reduction in the family.

Disadvantages of backfilling:

1. The natural settlement of the material causes cracks in the surface waterproofing, and the water leakage soaks the backfill material, which increases the load, resulting in greater settlement, and even cracking of the pipeline, and finally the waterproofing of the lower layer fails early and leaks;

2. The leakage can only be found after the leakage has occurred and then make up for it.

Advantages: 1. Effectively reduce the floor load;

2. No pressure is generated on the pipeline, and there will be no stress damage to the pipeline;

3. Easy to maintain, if there is pipeline blockage, rupture and leakage, or bottom waterproof failure and leakage, the overhead board can be easily uncovered for treatment;

4. It is convenient for daily observation, prevention in the first place, reasonable setting of daily observation holes, timely understanding of whether there is water inside, timely treatment before leakage, changing passive to active, or another way for toilet factory production.

Disadvantages: the process is not mature, the implementation of the supporting facilities is less, and the cost is high.

Usual practice process: bottom leveling slope, bottom waterproofing, waterproof layer protection, layout of pipelines, overhead columns, upper movable floor plate, waterproofing, leveling and slope finding, surface paste, I personally think that this conventional practice does not play the advantage of overhead easy maintenance. The improvement method should be that the movable bottom plate and the surface layer are integrated, and the sealing strip in the falcon joint structure between the movable plates is sealed and waterproofed, and the gap between the bottom plate is hooked and waterproofed. In addition, there is an activity view at the corner.

It is recommended to drain the water in the overhead layer, which can be drained by drilling a hole in the wall of the sewage pipe, or setting up a puddle for drainage.