Abstract: A shaped hollow building block suitable for lining bank slopes at the ground water level has a face wall in the form of a shield standing perpendicularly to a base wall, includes on both sides a margin projecting relative to side walls and has a height greater than that of the side walls. The side walls and the base wall jointly form an elongate trough in a direction normal to the face wall. The shaped block includes two compartments separated by a transverse wall extending parallel to the face wall in the trough and includes reinforcing walls projecting outwardly from the side walls. A building block for walls which are laid in courses without mortar and can be stabilized by planting, has a face wall, two domed side walls, and a base wall having rounded transition sections to the face wall and to the side walls.

Abstract: Edging for the track inside of a sports installation consists of a plurality of individual sections (1) abutting at their interfaces, each of which has an upper header body (2) of hard polyurethane synthetic material with a longitudinal slot 2a. Each section at its lower side is connected to at least two spacer pieces (3) of soft, resilient polyurethane synthetic material which rest on a foundation and are releasably connected thereto. Between the spacer pieces (3), passages 4 enable the drainage of water. Each spacer piece (3) has at its lower side an elongate inverted U-shaped carrier rail (5) inserted in countersunk manner and laterally enclosed by spacer piece (3). The hollow space (5a) has fastened thereto an inverted U-shaped spring clip (7), the legs of which resiliently reach under the head (8a) of an attachment screw (8) inserted in the foundation.