Abstract: A wall element consists of a ground wall with a shield that is placed on it perpendicularly and side walls extending laterally from the shield to the rear. In high walls that can be 7 meters or higher, in order to withstand the high static load that exerts force on the ground wall the side walls are formed in such a manner that their upper front surfaces are situated above the groove-shaped recesses located in the bottom surface of the ground wall, so that the load is transferred only via the side walls and prevents the side walls from collapsing.

Abstract: A covering element for covering drainage channels on sports fields provides for good surface drainage with a reduction of the danger of accidents for athletes consists of a section plate, made of aluminum, for example, which rests on shoulder surfaces of the drainage channels, and includes side support walls and water drainage slots arranged in the middle. Injury preventing edge elements are mounted with support ribs and the height of support walls and the thickness of edge elements over the support walls are about equal to the height of the upstanding edges of the drainage channels, so that water can consequently flow off well. The edge elements are made of a rubber of Shore hardness A75, so that no danger of injuries to athletes exists, and the edge elements may be colored white for the track side and green or red for the turf side of the sports field.

Abstract: Construction elements each consist of a central section and two external sections, with the central section having, in addition to flat top and bottom surfaces, two parallel side walls and four, shorter side walls arranged at angles relative to the longer side walls. Pairs of the angled side walls would intersect at right angles were they to extend to the two external sections. The two external sections are cylindrical in shape and of a height less than the height of the central section, with the remaining portion of the central section having a cylindrical wall that may be thought of as a continuation of the external section. By providing the external sections with a height less than the central section, it is possible to line up the elements adjacent to each other with the external sections of adjacent construction elements overlapping in order to form a temporary curbstone or traffic control structure.