Civil and hydraulic engineering

TT began in 1992 as EHL Eng (Environment, Hydrology, Land Engineering), founded by Raoul Tommasi. For almost two decades the firm worked mainly on water, land and infrastructure: rivers and mountain streams, land reclamation and irrigation, small hydropower, roads and motorways, always with the environmental impact assessment alongside the design. This page presents that work as the company's record. Some of today's themes, such as Lidar surveys and monitoring networks, already appear in those projects.

Rivers, streams and soil protection

The firm designed hydraulic and ecological restoration works using bioengineering techniques in the Tummarano river basin in Sicily, on the Rio Rugoni for the Friuli Venezia Giulia Region, and on the Versa and Judrio rivers, with floodways and levees. At Pontebba, for the Civil Protection of the Friuli Venezia Giulia Region, it handled the channelisation of the Rio degli Uccelli with the new bridge on the SS13 road, the grade control structures on the Rio Senata and Rio Coran, and the restoration of the Pontebba grade control structures, from design to construction supervision. It also prepared a project financing proposal for floodways on the Piave river at Maserada.

Land reclamation, irrigation and hydropower

For the land reclamation consortia of Pordenone and Udine the firm designed five schemes totalling 1,750 hectares with sprinkler irrigation and three schemes totalling 900 hectares surveyed with differential GPS. In Albania it worked on upgrading a 1,500-hectare former reclamation scheme at Miloti. In energy, it designed a 3,000 kW hydropower plant on the Fella river with its EIA and, for the Consorzio di Bonifica Ledra-Tagliamento, hydropower plants on 7 wells for about 500 kW and a 14-well aquifer recharge system with water quality monitoring.

Roads, motorways and tunnels

For Autovie Venete the firm carried out the EIA and environmental design of lots 28 and 29 of the A28 motorway, the geometric design and noise barriers of the same lots, the A4 junctions at Latisana and Meolo, and the EIA of the third lane of the A4 between Venice and Palmanova. For Veneto Strade it designed critical sections of the SS355 road at Sappada with the Rio Bianco tunnel, a cut-and-cover tunnel on the SS203 at Listolade, and 14 hairpin bends on the SS465 towards Forcella Lavardet. Other work includes the bridge over the Cellina on the SS251 and slope stabilisation along the Trieste-Opicina railway.

Environment, waste and early Lidar surveys

The firm carried out EIAs and designs for waste treatment plants, offshore discharge pipes in Sicily and runoff treatment systems for roads and motorways, as well as an environmental catalogue of 120 cards for the urgent interventions plan of Istria County. It also applied Lidar to infrastructure: 200 km of motorways for Autovie Venete with automatic feature extraction, about 500 km with noise modelling for Autostrade, and helicopter laser surveys of two landslides for Veneto Strade. In the same years it began environmental studies for the airports of Treviso, Catania and Arezzo.

The full list of projects is on the projects page, where projects can be filtered by area.