La Tour Granite France

Project facts

Description La Tour Granite
Challenge The façade slope of eight degrees, designed to minimise interference with the light and views from the existing towers

Designed by architect Christan de Portzamparc to represent the ‘prow’ of a triangular site in Valmy quarter in the Parisian business district and to link with the existing twin towers of La Société Générale, La Tour Granite is 184 m tall. The key challenge in building this icon in the latest generation of skyscrapers was the façade slope of eight degrees, designed to minimise interference with the light and views from the existing towers.

Brand Energy's SCF (self-climbing formwork) platforms were used to build the outer structure of the 45-storey high- rise, with its tapering, broadening and angled slopes. The SCF platforms were always safely connected to adjoining vertically climbing platforms by telescopic and sliding elements. With a width of 3.25 m, our platforms provided an unusually deep and extrasafe work platform, designed for a dynamic load of 5.0 kN/m² (without formwork). Every individual element was designed to withstand a maximum wind speed of 208 km/h. The largest single element used was a platform 14.5 m long, supported by only two brackets, enabling as many as eight brackets (platform lengths of 55 m) to ascend simultaneously with retracted formwork. Combining leading-edge technical expertise with world class equipment and project support resulted in La Tour Granite growing at a rate of one storey a week. La Société Générale is now doing business in 70,000 m² of additional premium space.


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