When it comes to building structures and foundation conditions of new facilities, it is necessary to perform detailed geotechnical investigation. Geotechnical study gives the conditions in the field to the existing and forecast in terms of strength and stability. Quantity in terms of number and types of research activities as well as in terms of the depth to which these investigations are performed depends on the complexity of the terrain and of the object. Geotechnical investigations that are generally used are: exploration drilling (manual or mechanical probe sets), soil sampling, measurement of pore pressure (monitoring wells), penetration probe (standard penetration (SPT), the static penetration (CPT)).

Legalization of objects that were illegally built, means to do geotechnical study to determine the soil quality in terms of stability of the field.

Geotechnical study is made on the basis of existing documents, using the results that are nearby the objects which are subject to legalization.If that is not the case new geotechnical investigation are performed (probing drilling, sampling and laboratory analysis, etc..).

The research project includes the scope of geotechnical works (field and cabinet) to be performed at the site for the conceptual or main architectural and construction project. The project is submitted to the competent authority (the local government or the Ministry of Urban Planning) in order to obtain permission to perform the described work.

For sites that are not processed on existing regulatory or detailed urban plan, the Study of engineering geological ground conditions for the production of detailed regulation will be made.