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The ceiling is of waved metal plates, and the stairway is of steel<br />

faced with marble.<br />

The construction has a gravel foundation; the ground water<br />

level was lowered using two wells.<br />

Otokar Pečený of Mostáreň Brezno designed the structural<br />

engineering of all the above-ground, i.e. steel construction;<br />

based on this contract, he became an employee of Dedeček’s<br />

studio X. Ateliér, and took the main role in designing construction<br />

of Dedeček’s later steel structures, especially the culture/sports<br />

hall in Ostrava. He also designed the structure of the depository<br />

racks/shelving (“depository coulisse of steel construction” DEDEČEK 1968, p. 2),<br />

again manufactured by Mostáreň Brezno.<br />

The load-bearing system of the bridging is in four girders on two<br />

30 cm-wide abutments at a distance of 54.5 m. One of these<br />

is fixed, the other socketed, allowing tensibility of the construction.<br />

The lowest of the three cascading levels in the bridging is<br />

suspended on bottom bands of the lowest-situated girders. The<br />

upper two levels are placed on the upper bands of the girders.<br />

Thus the main construction combines support and suspension.<br />

The roofing, including the glassed ceilings, is supported by<br />

crossbeam on the upper bands of the upper girder (toward the<br />

river) and of the lowest girder (toward the courtyard). This means<br />

the individual levels are each supported by a <strong>single</strong> girder, with<br />

the other securing stability in case of unbalanced loading.<br />

The bridging’s floors are of ribbed metal plates 6 mm thick,<br />

reinforced on top with braces poured over with a 6 cm layer<br />

of concrete. This created solid flat elements, able to take both<br />

perpendicular loading and the entire horizontal force in a lateral<br />

system of abutments, while stabilizing the pressed bands of the<br />

girders. Auxiliary stairways and an elevator are situated to the<br />

sides of the abutment.<br />

The topmost girder has a cornice (console) on both sides. To<br />

the east, toward the former Dom Československo- sovietskeho<br />

priatel’stva (now Esterházy palace of the SNG), the girder is<br />

34

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