The stairwell is made into a bathroom, and the bathroom on the second floor is not designed to be a

According to your problem, if your home is a new community that has just been handed over and is being renovated or your home is on the top floor, this problem is easy to solve. First of all, the general toilet downstairs and downstairs are connected (you survey your own bathroom, generally in the corner of the 110 white PVC water pipe is), if you want to add a bathroom on your second floor, it is generally best to increase the location of the bathroom upstairs and the location of the bathroom on the ground floor is not too far apart, it is best to be vertical, the purpose of this is mainly to facilitate the change of the top of the water after the beautiful problem. Maybe you want to ask me that there is no drain on the second floor, this question as long as you decide that the bathroom on the second floor can be connected directly with the bathroom sewer pipe on the ground floor, the method is to find a professional puncher to drill the hole, but before drilling must determine the location of your second floor bathroom toilet, basin, rain, general toilet or squatting hole diameter 110, others are 50

After the hole is completed, the top of the 110 sewer pipe on the ground floor bathroom is sawed off to make a 110 elbow, and the bathroom on the second floor is connected to it with a 3-way connection, and the new connection sewer pipe on the ground floor can be closed in the decoration ceiling, so as not to see a lot of pipe fittings on the top after the change. Here you need to pay attention to a few key points: 1, it must be a new house, and the sewer pipe has not been used by other users; 2. If it is not a new house and someone has already moved in, then it must be the top floor; 3. Decide the location of the toilet on the top floor first, and immediately transform the sewer after drilling, so as to avoid someone using it and causing the sewage of your upstairs users to fall down; 4. After the bathroom hole on the second floor is drilled, the gap between the sewer pipe and the floor slab must be treated, and the plugging agent can generally be adjusted into a semi-paste to fill the gap around the pipe fittings, and after drying, the whole bathroom can be waterproofed again.

The toilet on the second floor can be set up in a position close to the staircase, and the sewage pipe passes through the floor slab and walks through a section of horizontal pipe to connect the sewage riser of the stairwell under the staircase platform; You can also set up a toilet anywhere on the second floor, but you need to set up a separate sewage riser and find a designer to design it.