The Ravenna “pialasse” are brackish coastal lagoons that occupy vast depressed areas parallel to the coast. The Pialassa Piombone, in communication with the canal port of Ravenna, falls within the protected areas as a wetland of international interest.
Formed by semi-submerged areas and shallow waters traditionally known as "clear" delimited by artificial banks and a dense network of main and minor canals.
Nautilus, in collaboration with the Piacentini Group, oversaw the design and implementation of the intervention aimed at:
- physically separate the valley areas from the port by natural embankment
- restore the hydraulic functionality of the basin by deepening the tide channels
- improve water quality and delicate environmental set-up.
For the bathymetric arrangement of the environmental zone Nautilus has dredged the new tidal canals defined with the hydrodynamic study.
The resulting material was used to make up the islands and bumps, in addition also to material coming from outside the environmental zone.
The foot protection of the emerged areas consists of a grid of chestnut poles drove on the bottom, placed in support of a geotextile sheet that contains the filling material.