Abstract: To avoid a flimsy arrangement of a roof or outside covering composed of individual plate elements on three-dimensional trussing, and also to produce a solid roof or outside covering, holding spaces are provided on the tops of elongated members of the three-dimensional trussing. The spaces have a smooth cup-shaped cross section, into which the outside edges of plate elements are inserted with their parts which are also in cup-shaped cross section, which serves to hold packing strips. First, plate elements are connected with the elongated members by cover rails with downwardly angled arms, which are fastened by screws to each member, and then packing strips are pressed into the cup-shaped outside edges of plate elements, so that plate elements are attached to members of the three-dimensional trussing with packing, which forms a tight roof or outside covering.

Abstract: Apparatus for the sealing of flat roof elements or the like which are supported at their corners, comprising a bowl-shaped part disposed on the outside edge of the roof elements in the area of the top edges thereof, the bowl-shaped part running substantially parallel to these edges. A sealing tape is placed in the bowl-shaped part, and a cover rail having arms bent downwardly at an angle is provided for engagement with any two adjacent roof elements in the bowl-shaped part. The cover rail serves to press the sealing tape by means of screws which are inserted between the cover rail and the adjacent roof elements beneath the rail.

Abstract: A bolt connection between tubular rods and junctions in three-dimensional frameworks wherein the tubular rods are of constant diameter along their entire length and it continues the same beyond the hook-up parts at the tubular rod ends as far as those ends of the hook-up parts which are assembled each with one drive sleeve, and the smallest outside diameter of the drive sleeves being equal to or exceeding that of the tubular rods and of the hook-up parts.