Concrete vessel cylindrical formwork - has straight elements with brackets forming tight and gapless formwork

摘要

The curved, especially cylindrical formwork for concrete work has several long slender formwork elements. These are placed vertically and without gaps side by side for enclosing the concrete placed. This formwork is useful when the bulk of concrete held is very great. Example of such structures are concrete cesspits demanded by authorities for protection of environment. Each formwork element (3) has a fixed holding bracket (5) which covers the whole width of the formwork element. Both bracket ends have detachable connector holes (7a, 7b, 9a, 9b) and pegs (11). These components engage to form hinges and all the connected brackets form a closed chain which forms the outside surface of the completed formwork. The formwork elements and the holding brackets (5) are straight and not curved.