Method of forming a concrete deck by the use of a flexible...

E - Fixed Constructions – 04 – B

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E04B 5/36 (2006.01) B28B 19/00 (2006.01) E04G 9/08 (2006.01) E04G 13/00 (2006.01) E04G 13/02 (2006.01)

Patent

CA 2101594

METHOD OF FORMING A CONCRETE DECK BY THE USE OF A FLEXIBLE FORMWORK ABSTRACT A method of forming a concrete slab, or beam, that includes the step of forming a trough out of a flexible sheet of material, supported along two laterally spaced support zones, coextensive with the length of the beam that is to be formed. Wet concrete is poured into the sheet material trough to form an elongated beam. The flexible sheet may be an elastic material, preferentially stretched at selected points, such that the concrete weight, causes different zones of the trough to stretch in different amounts, thus enabling the beam to have different cross- sections at different points along its length. Also disclosed are various flexible sleeve and bag structures, that can be used as formwork for concrete connectors, between overhead concrete beams and vertical concrete columns.

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