For practical use, it can be helpful to define construction phases
to determine the execution order in which a construction part is
realized. In an adequate application, the user can define working
sections and zones, e.g., Fig. 7. Hence, the user is able to define
the execution order. Using geometric algorithms, it is possible to
verify building components as members of the defined sections
or their relative position to defined zones. Appropriate algorithms
can be found in [50].