SLAB CAST OVER PRECAST JOISTS Russian patent published in 2011 - IPC E04B5/16 

FIELD: construction.

SUBSTANCE: slab comprises plates of two shapes - central one and intercolumn ones, forming slab bay limited by column grid. Central plate has shape of polygon of slab bay, and intercolumn plates have shape of symmetrical hexagon. Intercolumn plates consist of shelves and crossbar and are common for adjacent slab bays. Crossbar is reinforced with frame and pre-stressed reinforcement. Cast areas are arranged in support zone of intercolumn plates and in coupling joints of intercolumn plates with each other. Support slab reinforcement, including circular reinforcement in upper zone with centre along column axis, is located in cast areas. Shelves of intercolumn plates are coupled with each other by means of closed protruding bars of reinforcement. Central plate rests with all sides at shelves of neighbouring intercolumn plates and is fixed with them by closed protruding bars of reinforcement.

EFFECT: increased rigidity, bearing capacity of slab as a frame element, provision of building frame layout in both directions and savings of materials.

10 dwg