We are the largest Italian independent fully employee - owned engineering company, ranked in the ENR TOP 225 INTERNATIONAL DESIGN FIRMS, offering consulting services for 20 years in planning, design, pmc of transport infrastructures, hospitals & buildings, energy & water.

Main projects:
 
AIRPORTS 
Italy: Bologna Guglielmo Marconi - Rome Fiumicino Leonardo da Vinci – Alghero - HEMS Pieve di Cadore – Aosta Corrado Gex 
Romania: Bucharest Henri Coanda – Craiova - Tulcea – Bacau
Oman: Muscat - Adam Airbase
Saudi Arabia: Military Airport - Helipad Riyadh
Nigeria: Uyo

RAILWAYS
Italy: Brenner Basis Tunnel - Turin High Speed cross rail 
Qatar: Metro Doha Red Line
Saudi Arabia: Metro Riyadh Line 3 - Metro Makkah - Metro Dammam
Romania: Brasov Simeria
Oman: Oman rail project
Algeria: Oued Tlelat/Tlemcen

ROADS
Italy: A3 SA – RC - Pedemontana Lombarda - 3 lane of A4 motorway - Ceppo Morelli Tunnel
Romania: Green Line Public Transport Bistrita – DJ 105A - DJ104D higway, Brasov - DN 5 highway
Bulgaria: V Tarnovo Lot 7
Saudi Arabia: Riyadh Bus Stations
Algeria: RN77 Highway Djen-Djen Port - El-Eulma
India: 2300 m. of tunnels National Highway 21

WATER & ENERGY
Italy: New Off-shore Terminal in Venice - Enel Green Power - Purifier of Lampedusa - Port of Ravenna - Caorso Nuclear Plant - Main Port Syracuse 
Oman: New Main Gate of Salalah Port
India: Smart Industrial Port City Kandla
Albania: Bajkaj Landfill

HOSPITALS & BUILDINGS
Italy: New Genoa Galliera Hospital - La Spezia Hospital - La Spezia Hospital - Rome Mercato Esquilino - Ferrara “Diamanti Palace” - Cassino Church of the Holy Family - Udine University Campus de Rizzi
Poland: Krakow Music Center
Romania: Târgu Mures County Hospital
Oman: 17 hospitals – Nizwa & Rusayl Industrial Estate - Fuel Facilities Qaboos Base - Genetic resources center
Saudi Arabia: Riyadh Hospital & Cardiac Center - KAP2C2 Military Headquarters 
Rail Baltica Architectural Visual and Landscape Guidelines 


Architecture

Construction

Transportation

3TI Progetti

Alfredo Ingletti

Giulia Lostia

Eugenia Penna

Lavinia Forte

Giorgia Gunnella

Francesca Salvador

3TI Progetti

Org chart

Teams

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