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The chimneys designed and constructed during the last years, in Spain, must be considered according to the model of chimneys with a ventilated and accesible air space between the brick lining and the concrete shaft. The lining is independent of the shaft and normally is built in sections. Each brick lining section rest on reinforced concrete slabs supported by the shaft corbels. Traditionally these concrete slabs have been concreted in situ and carried out by an auxiliary work platform suspended on the top of the chimney. In the system developed by Karman and Agroman, the concrete slabs are prefabricated, one upon the other, on the floor of the chimney and afterwards lifted to the required level and placed on the shaft corbels. In this article, we try to describe our experiences in this field, as well as the results of such chimneys construction by this system.

Prefabricación y elevación de placas de hormigón armado en grandes chimeneas industriales