Execution planning for wind farms, incl. technical detailed design
Wind farm detailed design: we translate permit documents into concrete construction drawings for cost-efficient implementation.
Execution planning is the technical heart of every wind energy project. It builds on the civil engineering design of the wind farm infrastructure from the permitting phase and delivers the drawings from which the farm is built: from foundations and cable routes through access roads to ecological conditions. Our technical detailed design is practice-oriented. We keep the interplay of technology, ecology and economics, as well as the requirements of the authorities, in view. In the execution planning of a wind farm, the detail decides. That begins underground: onshore, the shallow foundation is the most common foundation type; where the ground is uneven, soil replacement may be necessary, and with very soft subsoil, piles are used. The stability verification compares the ground conditions at the site with the manufacturer's design conditions.
Roads must be load-bearing and wide enough for heavy-haul transport, and bends require larger radii. Next to each foundation there is a crane hardstanding, an assembly area and areas for erecting the crane. The build-up of these areas follows the construction sequence: first the sub-base of the crane hardstanding is built, the rest of the area follows after the foundation works, and excavated material is stored so that it obstructs neither the cable route nor the slewing range of the crane. Whether a mobile crane or a tower crane is used affects the space required and the width of the access roads. Hybrid towers with a concrete base made of rings and tubular steel towers made of bolted segments also place different demands on transport and installation. Depending on the turbine type, the manufacturer specifies the bearing capacity and flatness these areas must have, and the bearing capacity of the bearing layers is verified in line with the project specifications, for example by plate load tests.
The cable routes for the internal collector grid must take account of crossings of utility lines, watercourses and roads. Anyone who fixes all this on the drawings early avoids expensive changes on site. Execution planning defines how your wind farm is technically built and is the basis for tendering, award and construction supervision. The more precisely foundations, cable routes and access roads are planned, the more reliably costs and schedules can be calculated. The conditions from the permitting procedure belong in the drawings so that fewer queries arise on site. Safety also begins in the planning: the Construction Works Coordination Act (BauKG) already provides for coordination in the preparation phase, and the safety and health plan (SiGe plan) must be available before the construction site is opened. The construction site coordination for wind farms builds on this.
In doing so, we coordinate closely with our biology department to identify risks early. We communicate on equal terms with turbine manufacturers, clients and all project participants. Based on the finished drawings, the tender for electrical and construction works follows, and we support on-site implementation with local building supervision. For photovoltaics, too, we take on the execution planning for PV systems.
