DOUBLY PRESTRESSED ROOF-CEILING CONSTRUCTION WITH FLAT GRID VAULT FOR EXTREMELY LARGE SPANS

摘要

The present invention relates to the construction of roofs for industrial buildings or other similar buildings of prestressed reinforced concrete and in particular to some metal parts becoming integral parts of the structure. The double prestressed roof-ceiling construction with flat grid plate for extremely large spans comprises a flat plate (1) and an upper girder (2) fixed into one another by means of some rods (3) characterized in that the flat plate (1) is carried out by assembling some pipes (1.1) as a grid, said pipes being manufactured of steel or prestressed concrete and by inserting some panels (6) into the openings between grid elements.