A floor arrangement for a cabin of a vehicle, in particular of an aircraft or spacecraft, comprises a carrier plate formed with a multiplicity of first fastening perforations and a multiplicity of reinforcing notches. The first fastening perforations are arranged one behind another in fastening rows at a uniform longitudinal distance. The fastening rows are oriented parallel at a uniform transverse distance from one another at an angle of orientation of 45° with respect to a longitudinal direction of the floor arrangement. The reinforcing notches run along the angle of orientation in a manner offset with respect to the fastening rows. A floor panel is formed with a multiplicity of second fastening perforations and is arranged above the carrier plate such that the second fastening perforations are arranged above the first fastening perforations to fasten cabin elements through the floor panel to the carrier plate.