Abstract: The invention relates to a two-shell structural unit and system of attaching the units to form an outer layer in the construction of a steep embankment formed from several layers, this outer layer being suitable for greening. The structural unit is formed by a front element, a spacer element, and a rear-wall element. The front and rear-wall elements have a flexurally rigid lattice structure. The rear-wall element is a planar element that is either a flat element or has a shape defined by a polygonal curve. The spacer element has a stepped form on at least one side and has mounts for frictional joints with geosynthetics. Connector pieces permit positive and frictional joining of the elements of the unit. The structural unit is intended for use as an independent support system to continuously resist horizontal loads exerted by a backfilled embankment.

Abstract: The invention relates to a two-shell structural unit and system of attaching the units to form an outer layer in the construction of a steep embankment formed from several layers, this outer layer being suitable for greening. The structural unit is formed by a front element, a spacer element, and a rear-wall element. The front and rear-wall elements have a flexurally rigid lattice structure. The rear-wall element is a planar element that is either a flat element or has a shape defined by a polygonal curve. The spacer element has a stepped form on at least one side and has mounts for frictional joints with geosynthetics. Connector pieces permit positive and frictional joining of the elements of the unit. The structural unit is intended for use as an independent support system to continuously resist horizontal loads exerted by a backfilled embankment.

Abstract: A plug-in type contact arrangement for high power electrical apparatus such as switch gear, wherein a fixed contact member carries a plurality of contact fingers having roller contacts mounted at one end thereof for reliably contacting a movable contact member when such movable contact member is forced into a contacting relationship with the fixed contact member and entering the cage-like receptacle formed by the circularly arranged contact fingers, and wherein the contact fingers are crimped at a predetermined point forming a first longitudinal portion and a second longitudinal portion arranged in different axial planes and connected by the crimping region, thereby transforming the contact pressure formed between the movable contact member and the roller contacts into a torsional load exerted on the contact fingers.