Is the sunken toilet backfill not paved with steel mesh lines?

Now when developers build houses, most of the bathroom design is sunken, but for the sunken toilet after the secondary waterproofing, it needs to be backfilled, and finally the steel mesh is laid on it, and then smoothed with cement mortar, and after the reinforced concrete is dry, it is brushed with waterproof materials and floor tiles; So the question is, does the sunken toilet backfill not pave the steel mesh line? Today, Liu Zhi will communicate with you on this issue, hoping to help you understand this aspect.

After the sunken toilet backfill, why do you need to lay steel mesh?

Cause. 1. Ensure that the cement mortar is smooth and will not sink. Now the backfill material is generally made of ceramsite, ceramsite has a certain water absorption, and the density is low, because it is an oval shape, there will be a certain sliding phenomenon between the ceramsite, if the steel mesh is not paved, the cement mortar is directly smoothed on the ceramsite, and the cement mortar is likely to penetrate down to the gap between the ceramsite, so that the cement mortar will sink down, and the ground is uneven, that is to say, the steel mesh is paved, mainly to ensure that the ground is flat and will not sink.

Cause. 2. Avoid damage to the drainage pipe caused by extrusion. Avoid cement mortar squeezing the drainage pipe at the bottom of the bathroom, if there is no steel bar, it is like people have no skeleton, the cement mortar at this time will play ceramsite bottom extrusion, pro, there is no support of the steel mesh, once people step on the cement mortar, it is likely to squeeze and cause cracks in the drainage pipe.

The sunken toilet backfill is not paved with steel mesh, which may cause problems.

Issue. First, if the steel mesh is not paved, it is likely to cause the backfill position to sink where there is no support point.

If the backfill material, the choice of ceramsite, generally at the bottom of the bathroom with red bricks, a lattice grid will be separated by the ceramsite, used to isolate or fix the drain, but there is no red brick to support the position, just use the ceramsite to do backfilling, at this time there is no steel mesh to lay on the ceramsite, directly with cement mortar, this position in the later use process, due to the weight of the person is easy to sink, resulting in uneven ground or tile cracking.

Issue. Second, if the steel mesh is not paved, the cement mortar is prone to cracking after drying.

The cement mortar has no fixed force after the steel bar is dried, and the cement mortar cannot be bonded together, so that the cement mortar cracks, just like the soil on the mountain does not have the roots of the trees to do the tension, once the rain washes or the force squeezes, the mulberry soil will collapse.

Once there are cracks in the backfilled cement sand, it will also drive the waterproof material and the adhesive material on the back of the tile to produce cracks, which will cause the phenomenon of not being waterproof, and the tile is hollow and loose.

Personal opinion: If the above analysis, we can conclude that it is not possible to clean the bowl after the backfill of the urban toilet, and a series of problems will occur, which will greatly reduce the waterproof effect and service life of the ground material; At the same time, laying a layer of steel mesh on top of the backfill material will not increase a lot of material costs and man-hours, so that it can improve the waterproof effect and the service life of the ground material, so after the backfill of the sunken toilet, try to lay the steel mesh.

No, because if you don't lay the steel mesh, it is easy to cause the bathroom to leak, and it will be very troublesome to the back, so it must be laid.

After the concrete is poured with the reinforcement mesh, the effect will be better when combined with the filling under the bathroom, and the two together will be more stable, durable, and foolproof.

I don't think so, because it will be unsafe if you don't lay steel mesh, and things in the bathroom are easy to sink.

Personally, I think it's better to cover it with steel bars, because this appearance will bring convenience in the future.

There is a very important construction process of the sunken toilet, which is the construction of the ground after the backfill of the sunken toilet. The backfill of sunken toilets is basically carried out by the renovation company. However, in actual ground construction, there are various construction methods.

The cement mortar is likely to penetrate down into the gaps between the ceramsite, resulting in the cement mortar will sink down, and the ground is uneven, that is to say, paved with steel mesh, mainly to ensure that the ground is flat and will not sink.

<> if the bathroom area is small, belongs to the household kind, the area is about 4 to 5 square meters, the backfill is laid in layers, layered compaction, only about 10 cm thick at a time, such a toilet is backfilled in two days, and then the cement mortar leveling layer is made in this case, and there is no need to use steel mesh at this time. The design is indeed very advantageous, due to the sewer pipe in the settlement layer, the bathroom can not see the top sewer pipe when you look up, and the noise is greatly reduced, and you can lay the pipe at will according to your own decoration style, which does not affect the residents downstairs.

Introduction to the layout of non-sunken toilet pipes. Since the floor of the non-sunken toilet is basically flat with the indoor floor, the layout of the drainage pipes in the bathroom is the method of partition installation. Non-sunken toilets, which were very common in houses before the nineties, have the biggest advantage of being easy to maintain and easy to check for leaks.

But it also causes a lot of disturbance to the downstairs neighbors. How to clean and waterproof, these processes are very complicated. Therefore, the sunken toilet of the clear water room has advantages, and the non-sunken toilet of the hardcover room is easy to operate.

The bathroom structure of modern buildings is mainly divided into two types: sunken and non-sunken, sunken toilet refers to the overall sinking of the bathroom ground structure layer when the main body is built, and there is a fixed height difference from the floor, while the non-sunken type is the bathroom ground structure is flat with the floor, which is a whole.

The treatment of waterproofing is more troublesome, the decoration cost is higher, and the maintenance of the hidden danger of water leakage is more troublesome. Of course, it is not possible to lay the steel mesh, because the sand and gravel layer filled in the middle will gradually sink after a long time, and if it is not laid, it will lead to cracks.

The sunken toilet is not easy to take care of, and it is easier to produce stagnant water, and the sunken toilet is backfilled, and it is not possible to lay a steel mesh, which is prone to water leakage.

The sunken bathroom is very difficult to clean, and there are many dead corners that cannot be cleaned. If you want to make a sunken bathroom, then it is not possible to lay steel bars.

It costs hundreds, if not thousands, of a vehicle to transport ballast water up and down to the ballast water field. The earthmoving people need to be filled with stones and sand to transport the ballast, and the project manager will not be willing to do it because the cost will be higher. However, after backfilling, the waterproofing is not good enough, or for a long time, the foundation sinks, the waterproof layer is broken, the bath water penetrates into the brick joints, and penetrates into the bottom of the sleeping bag through the waterproof tear place, resulting in stagnant water, water, water, slight smell, moldy tiles, and the heavy sleeping bag stagnant water gradually seeps into the downstairs.

In the future, toilets are always in danger of leaking. The caisson overhead process does not require the construction of ballast, but a drainage pipe is set at the bottom of the caisson, the piers are piled up, and the cast-in-place plate is covered to form an overhead structure. That is, the inside of the Kaisen is empty.

Why do you need to do kason overhead? To know why, I'll have to say it slowly. Find a flat layer on the bottom surface of Kayson and dry it, then apply a flexible waterproof material on the flat layer to form a second Kayson waterproof layer, and wipe the hard waterproof material on the wall to avoid causing ground settlement and tearing.

There are pros and cons to a sunken bathroom's white pen and overhead, but overall, the personal point is that overhead is better than a white pen. Why is it said that a sunken bathroom is better than a white pen? Due to the overhead practice, we had to support the overhead plate at the bottom of the caisson.

For example, bricks are laid with bricks at the bottom of a caisson, then tiles, and finally steel bars are tied to the tiles and concrete is poured. This makes it possible to make overhead panels. Therefore, the construction should save more time than the white pen.

The overhead method is one step less than bathroom backfilling, i.e. material backfilling. As a result, you can save on backfill material in the materials used. For example, we use slag and ceramic backfilling, which can be saved.

Prevents the backfill material from absorbing water and producing odors. This is for the backfill material in our bathroom, which absorbs water due to waterproofing issues or plumbing issues. Over time, if these backfills are not drained in time after being filled with water, they will have a great taste.

I think it is better to backfill the lower level of the bathroom, which is safer and can be used for a long time, which will be more firm and convenient, and will not cause other troubles.

If you choose to be overhead, there may be collapses or cracks in the later stage, which is very unsafe and unreliable.

Backfill well, so that we can save a lot of trouble in the future, should not be directly overhead, so there will be a lot of hidden dangers.

We must pay attention to two points, one is to combine the house type of your own home, because the house type is different, the designed structural space is also different, and the other is to plan the function reasonably, such as if the space is sufficient, it is best to reserve a shoe change stool, and then leave the middle and bottom of the entrance cabinet empty, so as to fully realize the practicality of the later stay.

First of all, let's take a look at the characteristics of the sunken toilet: the sunken toilet refers to the partial or overall floor of the bathroom lower than a certain height of the corresponding floor, generally 40cm. In the later decoration, use lightweight materials for backfilling, as long as a hole is set on the surface for drainage risers, or you can use overhead methods for decoration.

Now many family bathrooms are sunken, for the sunken toilet we generally have two treatment methods, one is directly overhead, the other is backfill, as for which method to choose will be better, let's first compare the advantages and disadvantages of these two ways.

1. Overhead.

The overhead operation method is relatively simple, and it does not increase the weight of the floor; Secondly, it is also more convenient to carry out repairs in the future. Its shortcomings are also more obvious, once the water leakage occurs, the entire overhead layer is waterlogged, and it is also very troublesome to deal with, so we must do a good job of waterproofing.

Second, backfill. The backfill method is a building construction method in which the horizontal drainage pipe of the toilet is buried and then backfilled with lightweight materials.

The biggest advantage of the backfill method is that there will be no water leakage, but it is quite difficult to repair in the future, and the construction is more troublesome. Of course, in the process of decoration, in order not to increase the weight of the floor, we try to use lightweight materials. As for the choice of backfill materials, it is generally popular to use construction waste, cinders and other materials for backfilling.

There are a lot of things with water chestnuts in construction waste, which are easy to scratch the water pipes, and the sulfur oxides in the cinders will corrode the plastic water pipes. Therefore, it is now popular to use ceramsite to make backfill materials.

The operation steps of the backfill method are a bit more complicated:

1. First of all, paint the waterproof paint twice on the original structural surface, brush the wall and the ground together, and the waterproof height is not less than 40cm on the horizontal ground (non-sinking ground).

2. Red brick or concrete is used as a partition overhead, and the caisson is divided into several lattices of about 400*400.

3. Fill the ceramsite. Fill the moisture-proof ceramsite into the red brick lattice, do not press too tightly, and play the role of absorbing water vapor.

4. Cloth reinforcement. A layer of 200mmx200mm square steel mesh composed of 5 mm diameter steel bars is placed above the lattice to ensure the firmness and uniform force of the concrete layer.

5. Pouring concrete layer, 40 mm thickness fine stone concrete leveling. Don't forget to do the waterproof slope and then do the waterproofing paint twice, along with the walls. Then it's time to start laying the tiles.

Based on the above comparison, it is recommended to use the overhead method when making medicine to do a good job of waterproofing in the construction of sunken toilets.

Step 1: Do two times of waterproof coating, these two times of waterproofing must be done together with the wall, and the height of the wall should be more than 40 cm higher than the upper edge of the caisson. Ensure that the seepage water in the upper layer will not expand to the periphery, and can only be discharged to the floor drain.

Step 2: Red brick or concrete is used as a partition overhead, and the caisson is divided into several 400*400 lattices. Many people don't do this step, in fact, this is a very important step, with such a load-bearing partition, the concrete layer above will not fall.

Otherwise, after a few years, the bathroom floor will sink, crack and leak.

Step 3: Fill in ceramsite or cinder. Fill the moisture-proof ceramsite and lattice, do not press too tightly, naturally, because it is not load-bearing, only plays the role of absorbing water vapor.

Step 4: Cloth the rebar. A layer of 200mm*200mm square steel mesh composed of 5 mm diameter steel bars is placed above the lattice to ensure the firmness of the concrete layer and the uniform force.

Step 5: Pour the concrete layer, 40 mm thickness of C25 fine stone concrete leveling. This layer should be done on the lagoon slope, do two times of waterproof coating, even the wall together, after the waterproof layer is dry, it is necessary to brush a plain cement slurry to protect it, so as not to scratch when paving floor tiles and porcelain tiles.

After the protective layer is dry, you can go up and do the next step of tile paving.