FOULC: Fast Over-all scanning of Underground and Linear Constructions


The FOULC project (in the TISCA program) aims at obtaining information on some of the main functionalities of a sewer using non-intrusive techniques. Information can be gathered in-situ to quantify the actual hydraulic capacity, the presence and the amount of sediments and biofilm, detailed 3D information on the actual sewer geometry and information on the locations where and the amount of infiltrating groundwater. To this end an aquatic drone is developed as a platform for the sensors and the data-acquisition system. The development of this sensor platform is dedicated to sewer systems, but the application is not limited to sewers since it can also be applied for obtaining information on hydraulic capacity of and the presence of sediments in ditches and canals.


Project number


Main applicant

Dr. ir. J.G. Langeveld

Affiliated with

Technische Universiteit Delft, Faculteit Civiele Techniek en Geowetenschappen, Afdeling Watermanagement

Team members

M.J. Lepot


01/09/2016 to 30/06/2020