Foundations and special underground works

1311 – Cave del Predil – Rio del Lago (Udine – Italy)

Works for securing the banks of the Rio del Lago of the Cave del Predil basins in the context of the intervention called ''works for the protection and hydraulic drainage of the Rio del Lago in Cave del Predil in the City of Tarvisio (UD) ''.

Friuli Venezia Giulia Region

Period of Execution:
August 2015 - December 2016

Works Amount:
€ 2.153.364,00


The works consisted in the construction of a 1.570 m secant pile wall with a depth of 9 m. The overall length of the works is 1.224 m. Double purpose of works: to secure the foot of the cliff avoiding its erosion; to create a waterproofing barrier in order to avoid basins waters from flowing into the bed river.
Furthermore, part of the works involved the construction of a capping beam for structurally connecting the pile heads and the reinforced soil at the top of the cliff.
The piles were executed by means of a coated continuous flight auger (CCFA), which combines the benefits of speed and the disruptive and drilling capacity of casing piles.
In addition to the main works, preparatory works were executed such as:
– construction of exit channels for construction site safety;
– earth moving works for a total of about 30000 cubic meters.