Construction of two water tanks in Sant Pere i Sant Pau

The work is being carried out in 5 phases:
Phase 1 (demolition of cover) Mechanical demolition of the existing 15 cm reinforced concrete dome through the use of a remotely controlled robot suspended from a 250 metric ton crane.
Phase 2 (weather-proofing of the outer shell): Repair of the existing tanks’ walls using repair morters and subsequent weather-proofing through the application of bituminous paint and geotextile sheeting for drainage.
Phase 3 (internal structure of new tanks): Pouring of foundation slabs, 20 cm floor slab and 30 cm walls consisting of frame, post-stressed cables and shotcrete.

Phase 4 (internal piping and access hole): Replacement of stainless steel inlet and outlet pipes, as well as the construction of a new access hole below the current floor slab,.
Phase 5 (prefabricated structure and final finishes): Supply and assembly of the cover structure using 30 cm alveolar slabs, followed by placement of a 5 cm compression layer, weather-proofing with asphalt cloth applied with hot bitumen and placement of drainage gravel, perimeter railing and walkway between tanks.