Ventilation Blanka

Cladding panels for the structure providing ventilation for the Blanka tunnel in Prague. Precast concrete units are used as cladding on a cylindrical reinforced concrete structure which provides ventilation of the Bubeneč Tunnel – a part of the Blanka system of tunnels in Prague. The surface of the cladding elements is a work of art using a unique technique of carving a special mix of sand and oil by a robotic arm. A complex broken-up convex relief with heraldic motifs was achieved. A total of 176 pieces of atypical prefabricated panels were produced from self-compacting concrete with a width of 1,322 mm, a height of 2,350 mm. The thickness was variable from 75 mm to 175 mm, given the convex shape of the panels and the complexity of the relief.

WINNER OF 2020 ČBS „EXCELLENT CONCRETE STRUCTURE“