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In Köln-Deutz, Germany, Hochtief Construction AG is converting the old exhibition halls on the banks of the Rhine into a modern office and media centre. While the historical brick façades have been retained, Cologne's largest office project makes progress behind the outer walls. Both the coring of the old building and the excavation work require a combination of experience and instinct. The concreting of the expansive, up to 1,5 m deep foundations, walls
and floors requires truck-mounted concrete pumps with a long working reach.
Of the concrete's 140 000 m3 total volume, around one third is being placed
by machines of BEKA-Betonförderdienst GmbH. BEKA is favouring the use
of its new Putzmeister M 62 "six-arm" in the former exhibition
halls. Around a half of the gross floor space measuring over 200 000 m2 has already been let to RTL, Europe's largest commercial television broadcaster. The reason behind this is that the TV company would like to relocate the German headquarters of the holding company to the historical halls and gather under one roof its businesses scattered across several locations in Cologne. The listed Rheinhallen 1 5 with their expressionist façades were built between 1924 and 1928 on the order of Cologne's mayor of the time, Konrad Adenauer. Additional annexes were built in the 1970's, but these have since been torn down as part of the modernisation work.
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Long-Reach Boom Concrete
Pump Serves Historical Exhibition Halls
The machine is equipped with a large 200 m3/h core pump, making the
concreting of the formwork sections, which on this site have a typical volume
of up to 1800 m3, a speedy process. An older M 52-5 offers occasional assistance.
