WATER SUPPLY & SEWERAGE
Works to restore the urban infrastructures and buildings of certain islands in Venice Lagoon - Italy

Client:                        Consorzio Venezia Nuova for Ministry of Public Works

Services:                   Surveys and investigations, preliminary and final design

Period:                      19/1999  in progress

Construction cost:  € 1.230.000

The project:

In the context of the vast programme of works to save Venice form flooding and restore the natural environment of the Venice lagoon, for which TECHNITAL is the sole designer, are numerous projects to protect the various islands and townships of the lagoon. Among these are the projects for the restoration and protection of the islands of Lazzaretto Vecchio and Chioggia

Lazzaretto Vecchio

The island is located in the eastern part of the lagoon behind the Lido littoral. In ancient times it was used as place of confinement for plague victims and has since been used for various purposes. The Municipal council of Venice has now decided to turn it into a Museum and Conference Centre.

The project envisages the architectural recovery of all the existing buildings which are in masonry with wooden trusses. The walls have either been replaced or reinforced. The foundations presented serious problems of stability due to the low bearing capacity of the underlying clay and hydraulic underthrust caused by the variations in the tide level. The foundations therefore had to be consolidated with micro-piers and grouting.

The project included a new systems for rainwater drainage and raw sewage, and an activated sludge sewage treatment plant with sludge oxidation by means of a prolonged aeration system. The rainwater drainage system included a drainage network and pumping station with sea discharge.

Chioggia:

The works envisage the rehabilitation of all the canal banks and quay walls, and the consolidation of the foundations of the overlying buildings. The project also includes the reinforcement of the bridge “Ponte Vigo” , a rainwater drainage system discharging into the Vena and Lombardo canals, and the renewal of the paving of the main street “Corso del Popolo”.



 

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