The same level of drainage as the name suggests is that the drainage problem in the layer to solve, of course, the drainage riser is still through the layers. In the market has been the emergence of the same level of drainage products, such as wall drainage system is a same level of drainage system, it is the drainage pipe in the wall, a variety of sanitary ware are used in the side of the drainage way; the whole bathroom is also a same level of drainage; there is also a national standard atlas of the "Residential Bathroom" (01SJ914) has been detailed in the method of the bathroom floor will be lowered by at least 300 millimeters, the drain pipe laid. After the drain is laid, it is covered with filler (e.g., cinder, construction waste, concrete, etc.) and then the surface layer is laid. However, the most noteworthy is a product called "same floor drainage access", the product is installed directly on the riser, one per floor, the minimum floor slab must be reduced by only 150 mm, cross-pipe sanitary ware (except toilet) drainage without any water seal (including floor drain), other practices with the national standard atlas of the "Residential Bathroom" (01SJ914), the same as the national standard atlas of the "Residential Bathroom". (01SJ914).

The following is a comparison of these same floor drainage system:

Wall drainage is generally used in high-density polyethylene pipe as a drain, all the drainage pipes are all concealed in the wall, the entire bathroom can not see the exposed drain. But the shortcomings are very obvious, first of all, the wall becomes thicker, the bathroom area is reduced; Secondly, the floor drain under the drainage is still a problem, some specially made floor drains are thinner, can be done in this layer, but the height of the water seal is not high enough, easy to dry up and overflow the odor. Of course, the high cost is also an important factor affecting its popularity.

The advantage of the whole bathroom is to avoid too much remodeling of the original bathroom piping, construction speed, you can use the finished product directly installed. But it is the price is not expensive, which is the product has not been widely accepted as an important factor, in addition, the overall bathroom after the installation of the bathroom area is also greatly reduced.

The national standard drawing set bathroom sinking practice is a more mature one, mainly through the multi-channel floor drain will washbasin, bathtub, washing machine, mop pool and other drainage connected to the drainage riser, in our country in Shenzhen, Shanghai and other places have been used, but because of its floor sinking height is not small (at least 300mm), and the state departments, design institutes, real estate companies and so on did not cause this Attention, so it is not widely accepted. In addition, if you do not use multi-channel floor drains, part of the water storage bend concealed, maintenance is also more difficult. If the use of multi-channel floor drain, can be cleaned through the multi-channel floor drain maintenance.

The same floor drainage access to the national standard atlas with similar practices, sanitary ware can be freely arranged; due to the drainage cross-pipe are arranged in the layer, so there is no sanitary ware drainage on the floor small riser holes, waterproofing workload is greatly reduced; water sealing has been resolved in the access to the device itself, except for the toilet, other sanitary ware need not set up another bend; access to the device itself with a checking cover, checking the mouth, it is very convenient to clean and repair; water access is very convenient; the access to the device itself with a checking cover, checking the mouth, it is very convenient to clean and repair. Clear maintenance is very convenient; water seal for the washbasin, bathtubs and other sanitary ware used ****, not easy to dry up, anti-odor overflow function is better; with the original ordinary riser compared to the access to the device itself, the special structure of the b-bend has a certain role in energy dissipation, so that the noise in the drainage riser is greatly reduced; in the reduction of the height of the floor slab, than the original national standard drawings on the much less than the minimum reduction of 150 millimeters, (while the original national standard drawings on the minimum reduction of 300 millimeters,) easier to provide a better solution to the problem. 300 millimeters,) is more acceptable to most people. From these features can be seen, the same floor drainage access to a combination of multi-channel floor drains and Suvidor drainage system in the advantages of the mixer, is a more complete function of the same floor drainage accessories, especially suitable for multi-storey and high-rise residential bathroom use. In some specially designed (for the characteristics of the same floor drainage access device) bathroom, without sinking the floor can be used in the same floor drainage access device, floor drain can be used side wall type.

First of all, in the bathroom, the riser should be set up in a place where an inspection port can be left. For example, when the bathtub end of the ventilation shaft, the riser should be set up next to the ventilation shaft, the riser should be reserved next to the check port, which can be in the form of wall cabinets.

Secondly, the drainage cross-pipe should have a certain slope to ensure that the water can flow into the drainage riser normally in accordance with the specified fullness. For example, DN50 drainage plastic pipe slope of 2.5%, the minimum shall not be less than 1.2%.

And, because of the same level of drainage access to two wastewater interface, different side of the sanitary ware can be accessed separately on different sides of the wastewater interface, try to avoid unnecessary cross drainage pipe.