The roof consists of two square parts. Each side has a surface of 12m x 12m.
The total ground surface of the roof is 12.0m x 26.3m. It consists of welded metal sheets (5mm thick) and weighs 40 tons.
The roof was prefabricated in the steel manufactory and thereafter, in the biggest possible units, transported to the building site, where it was assembled on the ground. The two finally welded parts of the roof were then lifted to their final height (9m) by a crane and fixed on the pillars.

With the frame thus completet, the construction process benefited from the independent roof protection which was at that time already in its proper place.
It consists of cubes 2.26 x 2.26m (edged steel pieces - 3mm thick), which were are assembled on the site.
Walls, windows, ceilings and floors were then screwed on to the steel frame. The walls consist of enamelled panels measuring 1.13 x 2.26m. The placing of these enamel panels was planned according to a particular rhythmic system, a system which could be adapted for any other composition preferred. Afterwards, the entire building complex was placed on a concrete ground floor. The building has two floors - five single-storied and one double-storied rooms. When constructing the building complex, more than 20,000 bolts were used.