Can I share a single drain pipe for bathroom and kitchen drainage?

Summary. You can share one drain, but don't share the same pipe for the toilet drain (i.e., the fecal pipe).

You can share one drain, but don't share the same pipe for the toilet drain (i.e., the fecal pipe).

It is best not to use the same drain pipe for bathroom and kitchen drainage, because the water discharged in the kitchen is generally oily and the smell is more serious.

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It's better to separate. Toilet effluent is directly evolved into the septic tank. Kitchen domestic sewage is an indirect evolution of septic tanks. If the pipe comes out at different times, the sewage coming out is different.

OK.

But go outside from the kitchen to the bathroom.

50 pipes in the kitchen are well prepared for the water trap. So that a manhole outside will do. Save money.

If you have the conditions, it is best to go in two ways. There are two manholes outside.

The buildings in the city are all two-way.

You can share one drain, but don't share the same pipe for the toilet drain (i.e., the fecal pipe).

It is best not to use the same drain pipe for bathroom and kitchen drainage, because the water discharged in the kitchen is generally oily and the smell is more serious.

No, this is not in line with the relevant provisions of the current national norms. The sewage in the bathroom should evolve into a septic tank, and the wastewater in the kitchen should go into the grease trap. According to the Residential Design Code GB50096 2011, sections 8, 2, 6, the drainage risers of the kitchen and bathroom should be set separately.

Drains must not run through the bedroom. The Code makes it clear that this article is mandatory and must be strictly enforced.

Extended information: 1. In order to prevent the dirty and harmful gases in the toilet drainage pipe from stringing into the kitchen, it will affect the health and health of the residents. Therefore, the code clearly stipulates that the kitchen and bathroom should be provided with their own risers, and should not share a single drainage riser.

2. Excerpt from the "Residential Design Code": The drainage risers of the kitchen and bathroom should be set up separately, and the drainage pipes should not pass through the bedroom. 3. Excerpt from "Code for Design of Building Water Supply and Drainage":

It is advisable to use a drainage system that separates domestic sewage and domestic wastewater in the following situations in the building: when the nature of the building requires high hygiene standards; When the amount of domestic wastewater is large, and the sanitation department requires that the domestic sewage can be discharged into the urban drainage pipeline after being treated by a septic tank; When domestic wastewater needs to be recycled. 4. The drainage risers of the kitchen and bathroom should be set separately.

Hello, the drainage of the residence, the drainage of the bathroom and the drainage of the kitchen should not share one drainage pipe. First of all, the drainage of the bathroom is pure wastewater, and the smell is not good, and it is also very easy to smell back. If it is shared with the kitchen drainage, there may be problems such as odor clogging.

Secondly, the water used in the kitchen is relatively clean, and it can be reused after treatment to be used for municipal sweepers. Therefore, it is not advisable to share the same pipe. Hope this helps! 

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