What are the hydraulic properties of plastic manholes in comparison with other materials?

Because of the smooth inside and flow profiles plastic manholes have excellent hydraulic properties. Due to these excellent
hydraulic properties plastic manholes have a lower risk of obstacles or blockages.


  • As all plastic flow profiles are pre-fabricated, this insures excellent hydraulic properties. (picture of flow profile)
  • This is valid especially when compared to hand made concrete profiles
  • Maintenance (e.g. cleaning) can therefore be done easily.

Want to know more? Refer to Manufacturers documentation.