Sewage Transport Capacity of Horizontal Trunk Pipe of a Single Stack Drainage System with Inner Spiral Pipe

In a super high-level full-scale experiment tower, capacity of horizontal trunk pipe of a single stack drainage system with inner spiral pipe to transport simulated sewage was studied. The results showed that the transport capacity of simulated sewage by the DN100 horizontal trunk pipe was greatly affected by the pipe slope. Under the similar slopes, the DN150 horizontal trunk pipe had a better transport capacity for simulated sewage, and pressure of the horizontal branch pipe at the first floor of the system was less affected.