FIELD: civil engineering, in particular construction of monolithic reinforced-concrete floors, applicable in building of bearing structures of girderless floors. SUBSTANCE: stiffening ribs are vertically installed in the upper part of the girderless floor, the height of each stiffening rib is not less than two thicknesses of the floor slab, the stiffening ribs are installed inside the column opposite each joint plate. The opposite stiffening ribs are braced. EFFECT: enhanced bearing capacity of the girderless floor, in particular of the column joint and floor slab. 2 cl, 3 dwg
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