Patent ID: 8297003

Claim:
A gliding bed for a concrete slab, the gliding bed comprising: a first film; and a second film, wherein the first film is configured to be brought into contact with a foundation of the concrete slab and the second film is configured to be brought into contact with a bottom side of the concrete slab by pouring concrete onto the second film, wherein the first film and the second film are tightly connected to each other at their edges, wherein at least one gas- and liquid-permeable layer formed from a fleece and/or a textile fabric, a woven fabric or a knitted fabric is provided between the first film and the second film, wherein the first film, the second film and the at least one gas- and liquid-permeable layer are configured to reduce a friction between the concrete slab and the foundation when the concrete slab is subject to movement, wherein the first film and the second film are configured to maintain a positive pressure in the gliding bed.