US 7,540,121 B2
	Steel-concrete hollow bodied slab or ceiling
Wilhelm Haeussler, Füssen (Germany)
Assigned to BAM AG, St. Gallen (Switzerland)
Appl. No. 11/659,745 PCT Filed Aug. 12, 2005, PCT No. PCT/EP2005/008819 § 371(c)(1), (2), (4) Date Feb. 08, 2007, PCT Pub. No. WO2006/018253, PCT Pub. Date Feb. 23, 2006.
Claims priority of application No. 20 2004 012 814 U (DE), filed on Aug. 13, 2004; and application No. 20 2005 004 622 U (DE), filed on Mar. 19, 2005.
Prior Publication US 2007/0271864 A1, Nov. 29, 2007
Int. Cl. E04C 2/30 (2006.01)

U.S. Cl. 52—323  [52/577; 52/649.1]

1 Claim

1. 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).