Abstract: Method for producing a ballast weight for damping vibrations of a structure, the ballast weight being formed from ballast components comprising a part of a ballast cable, the method comprising: connecting the ballast cable to a conveying device, by the conveying device, moving successive portions of the ballast cable from a low point to a high point, and forming the ballast weight from a part of the successive portions of the ballast cable which have been conveyed to the high point.

Abstract: The invention relates to a method of building a foundation (1) comprising a steel monopile (2) and a precast concrete part (3) on top of the monopile (2), comprising:—arranging a support structure (12) inside the monopile (2), the support structure (12) having a plurality of rods (16) extending radially with respect to a longitudinal axis of the monopile; —bringing the concrete part (3) above the monopile (2), with supporting columns (13) interposed between the support structure (12) and the concrete part (3), wherein reinforcement bars (14) protruding from a bottom surface (9) of the precast concrete part (3) extend downwardly beyond the support structure (12) by passing between the rods (16) of the support structure (12); —arranging tendons (15) between the support structure (12) and the concrete part (3) and tensioning the tendons (15); and—pouring concrete into an upper part of the monopile (2).

Abstract: Method for producing a ballast weight for damping vibrations of a structure (2), the ballast weight (8) being formed from ballast components comprising at least part of a ballast cable (12). The method comprises: connecting the ballast cable to a conveying device (14), by means of the conveying device, moving successive portions (12P) of the ballast cable from a low point (B) to a high point (H), and forming the ballast weight (8) from at least part of the successive portions of the ballast cable which have been conveyed to the high point.

Abstract: The invention relates to a method of building a foundation (1) comprising a steel monopile (2) and a precast concrete part (3) on top of the monopile (2), comprising:—arranging a support structure (12) inside the monopile (2), the support structure (12) having a plurality of rods (16) extending radially with respect to a longitudinal axis of the monopile;—bringing the concrete part (3) above the monopile (2), with supporting columns (13) interposed between the support structure (12) and the concrete part (3), wherein reinforcement bars (14) protruding from a bottom surface (9) of the precast concrete part (3) extend downwardly beyond the support structure (12) by passing between the rods (16) of the support structure (12);—arranging tendons (15) between the support structure (12) and the concrete part (3) and tensioning the tendons (15); and—pouring concrete into an upper part of the monopile (2).