Patent ID: 7540121

Claim:
Steel-concrete hollow bodied slab or ceiling comprising: a plurality of concrete webs ( 5 ) disposed between a pattern of hollow bodies ( 2 ) with an upper reinforced layer ( 3 ) above the hollow bodies as well as with a lower reinforced layer ( 4 ) beneath the hollow bodies ( 2 ), each hollow body ( 2 ) being an uplift compression-free container downwardly open and circumferentially closed, in whose ceiling wall ( 33 ) includes venting holes ( 16 ), the container comprising spacers, and concrete of at least one concrete web ( 5 ) comprises at least one of fibers having tensile strength and at least one steel strut ( 6 , 7 ), in the form of a double tie bolt, the uplift compression-free hollow body ( 2 ) having one of a truncated cone- or truncated pyramid-shaped periphery ( 17 ), whose upper termination forms a cupola-like vaulting ( 18 ), the uplift compression-free hollow body ( 2 ) includes at least three radially disposed ribs ( 19 ), offset by identical angles, which are formed onto the cupola-like vaulting ( 18 ) and the hollow body ( 2 ) comprises an annular offset ( 20 ) in the region between the truncated cone- or truncated pyramid-shaped periphery ( 17 ) and the cupola-like vaulting ( 18 ).