In the working/project design stage of the building's construction structural part, the solutions from the preliminary and main designs are specified and elaborated to the level of detail that enables the construction of the building. Connection and installation details of the structures are added and refined. The goal of the working/project design stage is to compile project documentation that serves as the basis for construction work and owner supervision. When determining the level of detail and instructions provided in the working/project design, it is assumed that the construction work will be carried out by trained and experienced construction personnel under the guidance of a competent construction manager.