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Un forjado arquitectónico perfeccionado, caracterizado esencialmente porque está constituido por dos placas de hormigón, vibrado o pretensado, cuyos respectivos bordes colaterales presentan empotradas las alas o ramas de sendos perfiles de acero en "U" rectangular, determinando un cuerpo tubular rectangular, en el que dos de sus lados opuestos están formados por dichas placas de hormigón y sus otros dos lados, por las. almas de dichos perfiles de acero en "U".
Procedimento per l'assemblaggio ed il disarmo di casseforme per solette per lavori di costruzione in calcestruzzo, nonche' cassaforma per solette per l'attuazione del procedemento.
Ponti e viadotti in conglomerato cementizio armato interamente prefabbricati con impalcati costituiti da travi longitudinali collaboranti senza connessioni mutue in campata realizzate o con ferri o mediante precompressione