The structural and aesthetic challenge was met by extending a concrete slab, supported by beams attached to columns outside the old auction room, over the empty space.
Reminiscent of the Cold War, the facility's structure was constructed with concrete slab supported with outside supporting buttressing columns.
In the centre, puddled in snow, was a rectangular slab supported by two pillars of stone.
There was a single layer of those slabs, supported by innumerable spiderly slender columns.
There was formerly another large slab supported by smaller ones lying to the north east but this was unfortunately destroyed about 1876 by blasting.
It was a solid slab of rock, maybe four feet wide and twelve or thirteen feet long, supported by three rock pillars.
In many domestic and industrial buildings a thick concrete slab, supported on foundations or directly on the subsoil, is used to construct the ground floor of a building.
The scope of the tragedy was largely caused by high-rise construction and building methods that used rigid, prefabricated, reinforced concrete slabs supported by concrete blocks.
Another class of buildings that tends to collapse in major earthquakes, he said, uses concrete slabs supported by concrete columns, with only modest steel reinforcement.
The bridge consists of a single concrete slab supported by concrete abutments with angled concrete wingwalls.