The costs for the structural analysis of a single-family house are determined by the B&W engineering company in accordance with the requirements of the German Fee Structure for Architects and Engineers (HOAI) as well as the German Construction Tendering and Contract Regulations (VOB). The price can be read from the so-called “Fee Table”, whose input values are the chargeable costs and the fee zone:
The chargeable costs of the relevant scope of work, here the structural planning and design is applicable, are generally calculated at 55% of the cost of the construction works and 10% of the cost of the technical installations. These costs can only be calculated 100%, if all six service phases are performed by the structural engineer. The service phases are divided into basic analysis, preliminary planning, design planning, approval planning, execution planning and preparation for the award. A more precise definition of the individual phases can be found in Annex 13 of the HOAI.
The fee zones I (low complexity) to V (very high complexity) reflect the degree of difficulty of your desired construction. It is a result of whether your planned house is a building with no particular refinements, or whether you want to realize, for example, balconies with large overhang, a wall-free and column-free ground plan, or large windows without additional girders and perhaps even with the aid of prestressed concrete components.
If, for example, chargeable costs are 75,000 Euros with a difficulty level of the fee zone II (low complexity), the costs for the structural design amount to approximately 7,500 Euros. In principle, the costs for simpler calculations, such as a wall break-through, start at 1,500 Euros.
Our engineering office is equipped with state-of-the-art computers and programs, with which we also can solve the calculations of extreme structural structures from an engineering perspective.