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Reinforced concrete transportable joist, the shape of whose cross section is double "T" constituted by two horizontal boards joined by a vertical core, of uniform thickness of 3 cm (Figure 1) with the lower table being 14 cm and 10 cm thick. cm the top so that the vaults can be placed at the top and are supported two centimeters on the lower tables (Figure 4). (Machine-translation by Google Translate, not legally binding)
Apparatus for the manufacture of vaults or slabs for reinforced concrete frameworks for iron or wood. (Machine-translation by Google Translate, not legally binding)