This film shows experiments carried out to measure the water flow and drainage through open concrete pipes at Ewden 14th-19th May 1936. Intertitle - AGFA Concrete open-tunnel structures for water are shown. Water is then shown pouring through the structures. Intertitle - AGFA Water is shown pouring through different pipes and down through the concrete open-tunnel structure - different points in the system are labelled with different numbers. There are varying degrees of water flow and...

This film shows experiments carried out to measure the water flow and drainage through open concrete pipes at Ewden 14th-19th May 1936. Intertitle - AGFA Concrete open-tunnel structures for water are shown. Water is then shown pouring through the structures. Intertitle - AGFA Water is shown pouring through different pipes and down through the concrete open-tunnel structure - different points in the system are labelled with different numbers. There are varying degrees of water flow and splashing. Water level measurement markings are on the internal walls of the concrete structure so that the height of the water level/flow can easily be measured. Intertitles - AGFA More elements of the open-tunnel concrete structure are shown with water sloshing around through the system. Intertitles - AGFA A tank with water rippling through it is shown. A man is shown at the side of the water throwing plant debris into the water which flows into the tank. More elements of the open-tunnel concrete structure are shown with water sloshing around through the system.