A method for manufacturing a prefabricated concrete product is disclosed, in which method, a concrete slab with a recess at its upper surface is cast with slipform casting on a casting bed, and after the slipform casting of the slab the recess of the fresh cast slab is equipped with ducts, piping and/or wiring components, after which the recess is covered with concrete mass, and the concrete product is left to cure. The invention also relates to such a prefabricated concrete product.

Prefabricated floor element (1) having an elongated shape wherein a longitudinal direction (X), a transversal direction (Y), a height direction (Z), two end faces (11) which delimitate the element (1) in the longitudinal direction (X), two lateral faces (12) which delimitate the element (1) in the transversal direction (Y), a lower face (13) and an upper planar face (14) that delimitate the element (1) in the height direction (Z) are defined, which comprises transversal continuous upper grooves (15) on the upper planar face (14) or lateral grooves (26) on the lateral faces (24), the lateral grooves (26) extending from the lower tab (TS) to the upper planar face (24). The invention also relates to a structure comprising such prefabricated floor element (1) and further comprising a linear supporting element (LS) which supports one end of the prefabricated floor element.