| 摘要 |
The present invention relates to a lattice tower including substantially vertical members (2), braced apart by cross-braces (3), these members (2) converging towards each other, upwards, forming a pyramid frustum, each member (2) consisting of a flat metal sheet in the shape of an isosceles trapezium, bent along the common mid-perpendicular (2a) of its short and long bases constituting, after folding, the edge of each member (2), each member (2) forming a dihedron including two flanges (2b) which are symmetrical to each other with respect to the plane bisecting the dihedron that the member (2) forms, characterised in that the cross-braces (3) consist of lengths of angle bracket, one flange (3a) of which is fixed at each of its ends to the coplanar flanges (2b) of the opposed members (2) at two points (4, 5) arranged in the direction of the length of the cross-brace (3). <IMAGE>
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