System for the disposal, accumulation and return of rainwater in the area destined for the Torraccia Casal Monastero exchange junction, a system for collecting and treating wastewater.

Deviation of the Fosso della Torraccia made by 3 different sections like:

· Intubate section made with box in c.a. internal dimensions 3.00 x 2.25 m (overall development
equal to 193.5 m);

· Open stretch section made of trapezoidal section covered with prefabricated concrete slabs
abrasion and stones, 3.00 m wide at the bottom and 1.50 m high (inclination of the banks 1: 1;
total of 91.5 m);

· Open stretch section made with a trapezoidal section on the ground, 3.00 m wide on the bottom and 1.50 m high
(slope of the banks 3 h: 2 v; total development equal to 490.3 m).

The arrangement will also provide n. 6 bottom jumps of 0.75 m the first, 1.00 m the second and 0.70 m the following.

Downstream of the described intervention, the collecting of the project flow rates up to the Pratolungo ditch is carried out through the provision of two DN 1800 Pead pipes with an overall length of the intervention of approximately 1040 m.

Customer: Inco S.p.A.

Amount of the works: € 8.800.000