89 A steel-cage construction of seven floors is designed with a ground plan size of 20,0 x 14,8 m. The steel structure of the preheater is situated on a reinforced concrete floor (+10,8 m) by using elastomer bearings; the top floor is situated on +93,8 m. In the second stage was erected an elevator structure on this floor on the side of concrete silos. The highest element has a maximum level of +107 meter. With regard to the erection it was determined that the steel structure would be mainly bolted. The longitudinal circumferential main girders were calculated as elements with fixed ends to columns. All bolts of the circumferential girders and bracing were designed from steel grade 10.9. The building-up of the preheater tower was realized during the activities of the plant and above the existing production line (the new preheater tower was erected near the existing steel structure). The steel-cage construction of the preheater tower, including the technological equipment, was executed in a time-span of 5 months. The complex became operational after a shut down of two months due to connection works of the new and existing technological equipments. Economical aspects conditioned the design of the structure and using of a lot of economical rolled profiles of various types. In this way we reached a very low consumption of steel in comparison to the cubic meter of enclosure space. Weight of steel structure of the preheater tower: 869 000 kg Weight of outer steel staircase: 47 000 kg Weight of elevator shaft: 41 000 kg Total weight of steel structures: 957 000 kg Total weight of installed technological equipments: 1 776 000 kg Preheater tower of the cement plant ‘VSH Turòa nad Bodvou’ Preheater for cement tower plant ‘VSH Turòa nad Bodvou’ - Slovakia The skeleton structure of the preheater has the following dimensions in the ground plan: 20,0 x 14,8 m and a height of 93,8m, it consists of seven floors. The steel structure was realized as a bolted construction with high-strength screws because the given assembly time was very limited. The realised design was very economical; the weight of the steel structure was very low compared to the large build-up space.
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