predpätý betón nosné konštrukcie 2 Exclude matching results technické normy a štandardy 2 Exclude matching results Prestressed concrete 1 Exclude matching results betón 1 Exclude matching results concrete 1 Exclude matching results load-bearing structures 1 Exclude matching results prefabricated elements 1 Exclude matching results prefabrikáty 1 Exclude matching results prestressed concrete 1 Exclude matching results