In order to make a technical project, after precisely defining its specifications and the objectives pursued, the following procedure is followed: Preliminary work is done by the engineer, any modifications are discussed, the study is finalized, submitted for approval to the competent authority, construction contractors are selected, construction begins with the responsibility and supervision of the engineer.

In all the above stages, the scientific training of the engineer to be selected, his experience, his / her knowledge of the subject at all levels (knowledge of static and antiseismic, time planning, knowledge of materials, regulations, manner Work of subcontractors, etc.), his ethos and the works he has done so far.