Isozaki Tower

  •    Civil construction
  •    2009
  •    Milan - Italy
  •    Colombo Costruzioni, Italia

HEAVY DUTY MP TOWERS

Project overview: Isozaki Tower

Japanese star architect Arata Isozaki has put his signature on one of the three skyscrapers at Milan City Life, one of the largest redevelopment projects underway in Europe. The 202m high, 50-storey tower, now the tallest building in Italy, has been called “Endless” for its slimline modular system, which can be repeated indefinitely, with a core placed between two convex facades and panoramic elevators in the extremities of the slender, fully glazed sides, and has four external struts that stabilize the skyscraper from wind vibration.

  •  Tower structure total height: 55 m
  • Stiffening structure and inner scaffold height: up to 44 m
  • Inner scaffolding area with steel planks every 2 m.
  • Stiffenning and inner structure connected every 6 m.
  • Upper scaffolding area with planks: from 44 to 56 m

Construction method

The tower is characterized by two pairs of struts connected to the core at approximately 1/4 of the total height. The struts’ function is to increment oscillation damping and reduce the stress load on the base of the tower. On the N / W facade, the pair of struts have a height equal to 60m, those on the S / E facade equal to 40m, with a total weightload of 450 tons. For assembly and placement, the struts were divided into sections and lowered and welded into specially improvised metal structure towers. Pilosio fitted these structures with MP towers to provide access stairs at maximum altitude where the loading platforms and main winch for handling the parts were placed. Four walkways at different, predetermined heights enabled operators to then carry out the delicate phases of welding the strut
sections together.
To speed up the assembly of the MP towers, two of which were 61,56 m high and two 44,60m, the Euroedile firm of Treviso had to assemble two staircases vertically then successively mount all the other pieces one on top of the other with the aid of a crane. The MP tower was anchored to the metal structure.