| 摘要 |
<p>A connecting bolt (8) consisting of a bar of metal or synthetic material comprising three right-angle bends is usefully applied in a prefabricated self-supporting structure in order to produce corner elements. The three right-angle bends (9, 10, 11) extend perpendicularly to each other in mutually perpendicular planes so as to form a series of three consecutive bends which project perpendicularly to each other in orthogonal dihedrals. <IMAGE></p> |
