Combined surface channel and pipe system - interim report

This interim report describes Stage 2 of the research project on combined surface water channels and pipe system, Experimental Tests. This stage included: hydraulic tests carried out at HR Wallingford and structural test at the Transport Research Laboratory (TRL). The main objective of the hydraulic tests was the determination of head losses in the system, including local head losses created at the collecting chambers, for a range of flow conditions and different geometric configurations of the chambers.