Barcelona (Spain)

The use of the technology for building post-stressed bridges with precast segments made it possible to construct this 14 m high sculpture created by the American artist Roy Lichtenstein for the Olympic Games in Barcelona.
This project is a clear example of the variety of post-stressed concrete applications. Based on a 1:12 scale model and templates provided by Lichtenstein, the geometry was defined with a 3-D computer model using specific programs developed by Esteyco.
Because of the sculpture’s complex forms, it was decided to use solid concrete with stainless steel fibres to improve its strength in traction and ensuring the maximum durability of the sculpture, located on the edge of the sea, and to facilitate the adherence of the outer ceramic coating. Because of the sculpture’s great weight, it was decided to build it in eight segments prefabricated in the workshop with maximum weights of 20 tonnes and of sizes suitable for transporting to and installing on the site. These were stitched together and tensioned from the chamber in the pedestal using 10 cables with four 0.6 inch threads; the joints between the pieces were treated with epoxy resin mortar.