Abstract: Fastening apparatus for detachably fastening a removable roof section to a vehicle body includes an elongated locking device on the roof section movable between a roof-lock position in which the locking device locks the roof section to the vehicle body and a roof-unlock position in which the locking device unlocks the roof section from the vehicle body. A bow-shaped handle has two end parts, and a rotatable device rotatably connects one end part of the handle with the locking device such that the handle is rotatable between a handle-lock position to dispose the locking device in the roof-lock position and a handle-unlock position to dispose the locking device in the roof-unlock position. A connecting device is disposed between the other end part of the handle and the connecting link, the disconnectable connecting device having a connect position which connects the other end part of the handle and a rotatable connecting link.

Abstract: A sealing screen for waste dumps, e.g., for garbage dumps and the like, consisting of protective impermeable layers. The layers include two sealing layers and a control filter layer that is interposed between sealing layers. Two piping systems, an injection line and a second line system, are arranged within the control filter layer. The sealing screen has individual areas which are partitioned off from each other by means of sealing connections between and perpendicular to the sealing layers. A collector shaft or a tunnel are provided for checking the seal integrity in each individual area. A drainage layer with a drainage line system is arranged above the top protective layer, and a sealing layer is provided for protection above the drainage layer against damage from the dumping of waste into the dump.