A plastic multipurpose component that is suitable as a building block and is filled with filling bodies is used to form a sheet-like assembly from a plurality of components. The multipurpose component has double-walled outer frame parts (2) with an outer frame wall, an inner frame wall and a tread surface connecting them, at least one coupling device (6, 8) for connecting two adjacent components being provided on each of the outer lateral surfaces thereof. Where appropriate inner walls (4) divide the interior of the outer frame (2) formed by outer frame parts into a pattern of cellular lead-throughs (6). Inner bottom support frames (11), and where appropriate, bottom transverse struts on the double-walled outer frame and inner frame serve for stabilizing and supporting at least one filling body introduced in the plastic multipurpose part.