In order to produce optimal engineering accomplishments, besides structural calculation and planning the perfect combination of production, transport and assembly is also necessary. About 150 engineers and graduate engineers at Zeman are evidence of this. Together with production and assembly, they enable the development of efficient alternatives over the execution of the entire construction work from a single source. The latest computer programs support the technicians in their work. The data are transmitted to some extent directly to the CNC production machines. The three-dimensional display of the objects on the monitor screen enables even complicated construction elements to be designed free of errors.