HOLLOW-CORE FLOOR SLAB Russian patent published in 2017 - IPC E04C2/06 

FIELD: construction.

SUBSTANCE: hollow-core floor slab contains the lower and upper reinforced belt, voids, monolithic areas and embedded items. Monolithic areas are made in all voids of the end sections of the slab. The embedded items are installed in at least two voids. The embedded items are made in the form of a corner with anchor elements welded to the inner side of the angle, which is turned by its open part with anchor elements to the body of the slab. The angle has two horizontal anchor elements which are connected at the free ends by a plate, and one vertical anchor element extending between the horizontal anchor elements and terminating in a plate. All anchor elements are recessed in monolithic areas of the voids of the slab. The angle is installed in such a way that the upper leg of the angle is buried in the upper part of the slab, and the end leg is buried in the end part of the slab.

EFFECT: increase in the strength of butt joints.

4 dwg