Abstract: In the case of a large-panel component for buildings--which comprises at least two strip-shaped, juxtaposed panel elements made of light-weight concrete, said panel elements being provided with cavities which cross each other in the plane of the wall and with at least one semi-cavity which is provided on at least one end face and connection side, respectively, and said cavities forming a network and being adapted to be filled with cast concrete--the semi-panels defining the panel elements are provided with at least one semi-cavity, which extends in the longitudinal direction of said semi-panels, and with quarter-cavities, which extend parallel to said semi-cavity, both type of cavities being provided on the end faces and connection sides, respectively, of said semi-panels, and several semi-panels being interconnected, e.g.