WEIGHT REDUCTION ELEMENT DESIGNED FOR USE IN CONSTRUCTION INDUSTRY Russian patent published in 2021 - IPC B28B7/28 E04B5/32 E04G11/46 E04G15/06 

FIELD: construction industry.

SUBSTANCE: invention relates to a weight-reducing element intended for use in the construction industry, such as a single-use formwork made of a plastic material, which can be optionally reused, especially in the construction of lightweight roofs or lightweight concrete foundation bases. The weight reduction element (1) consists of at least one single-use formwork (2), made essentially in the form of a truncated pyramid, which is hollow and has a closed upper surface (4) and a lower surface with a lower opening (6a). In this case, at least near the corners (7), which are adjacent to the lower opening (6a), or near the corners (107) of the said upper surface (4), on the specified formwork, an engaging means (10, 110) is provided for temporarily stable and essentially rotary connection with gripping means (11) connected to the free upper end (12) of the leg (8) of the selected height. The element (1) for reducing the weight contains a leg (8), which has a lower end (23) opposite to the upper end (12), which is axially displaced relative to the gripping means (11) and the said temporarily engaging means (10, 110). Moreover, the free upper end (12) of the leg (8) engages with the mentioned formwork (2) at the lower surface by interconnecting said engaging means (10, 110) with the specified gripping means (11).

EFFECT: invention makes it possible to prevent the occurrence of points of interaction between the free ends of the legs or parts of the legs and the reinforcement cages located under the elements for weight reduction.

11 cl, 13 dwg