How to choose the size of sewage pipes?

Choosing the right size for sewage pipes in a building is very important. In the following, we will explain the steps for choosing the size of the sewer piping:

  1. Calculating the volume of wastewater: First, you need to estimate the volume of wastewater consumed in a building. This calculation is based on the number of people living in the building, the amount of water consumed per person and the type of activities that are carried out in the building.

  2. Calculation of sewage flow: After calculating the volume of sewage, you need to calculate the sewage flow. This value is equal to the result of dividing the volume of wastewater by its discharge time. Sewage discharge is different for each building and should be determined based on the type of building, piping capacity and consumption needs.

  3. Selection of piping size: according to the sewage flow rate, the piping size can be calculated. If the sewage flow is very high, the size of the piping should be chosen larger so that it can handle the volume of sewage well.

Regarding the calculation of piping size, you should pay attention to several points:

  • For domestic sewage, the pipe size is usually between 50 and 110 mm.
  • To calculate the size of piping, one should pay attention to factors such as slope, distance from the main pipe, sewage flow and the type of pipe used.
  • To choose the right size, you should pay attention to the tables and methods of calculating standards related to sewage piping. Each type of sewage piping is designed according to specific standards, and you should pay attention to the standards related to that type of piping to choose the right size.
  • The amount of pressure inside the piping can also be effective in choosing the size. If the pressure in the piping is higher than the permissible limit, a larger size piping should be selected to meet the required pressure.

In general, in choosing the size of the sewage piping, attention should be paid to the calculation of the volume of sewage, sewage flow rate, standards and related technical points. You should also ensure the ability and performance of the plumbing so that you can make the best choice for your building.