| 摘要 |
A trestlework structure provided with four main, legs forming an obelisk-shaped structure, wherein said main legs are positioned parallel to each another in correspondence of two mutually opposite faces of the obelisk and are reinforced at their base by jutting-out trestlework appendices lying on the planes of said faces. Furthermore, variants are provided by the invention, according to which said legs are not positioned parallel to each other in correspondence of the top end of the structure, and said mutually-opposite faces of the obelisk are contained in two or more adjacent inclined planes. |
