UNIT 1. GEOLOGICAL AND GEOTECHNICAL PHASES Introduction Field geotechnical investigations and laboratory tests Geological study Study of materials Corridor geotechnics Structure foundation geotechnics Tunnels geotechnics UNIT 2. PLATFORM AND INFERIOR LAYERS Introduction Setting up the plataform Protective layers of the platform. Seat layers Thickness of the layers Structure catalogues UNIT 3. VIADUCTS Introduction A viaduct project The construction of a viaduct UNIT 4. TUNNELS The project of a tunnel Works programs Preparation activities Tunnel excavation Methods of mechanized excavation: wall chasers and tunnel boring machines Activities after excavation Testing time Restoration of the environment UNIT 5. EARTH MOVEMENT AND CONSTRUCTION SITES Introduction Clearings Embankments Construction works