Cilj diplomskog rada je proračunati elemente prostornog rešetkastog nosača tlocrtnih dimenzija 32x32 m. U prvom dijelu rada teorijski je opisana općenita podjela prostornih konstrukcija, karakteristike prostornih rešetkastih nosača te principi formiranja prostornih rešetki. Drugi dio rada odnosi se na proračun prostornog rešetkastog nosača. Rešetkasta konstrukcija je dvoslojna, a osnovni element je tetraedar. Nosivi sustav konstrukcije je dvosmjerni. Rešetka je oslonjena preko osam stupova na krajevima te jednog stupa u sredini tlocrta. Visina stupova je 4,25 m, dok ukupna visina rešetke iznosi 6,0 m. Dimenzioniranje elemenata prostorne rešetke provedeno je prema Eurocode propisima, dok je statička analiza provedena računalnim programom Autodesk Robot Structural Analysis Professional 2015 – Student Version. Za elemente rešetke odabrani su okrugli cijevni profili, toplo predgotovljeni, a kvaliteta čelika je S 355.

The purpose of this thesis is to design elements of steel space truss with plan dimensions 30x30 m. In the first part, it is theoretical described general divison of spatial structure, characteristics of spatial truss and principles of formation space grids. The second part is practical, which refers to design of space truss. The construction is double – layer two – way lattice grid and modular system is tetrahedra. The grid is supported over eight columns at the ends and one column in the middle of plan. The height of columns is 4,25 m and total height of the grid is 6,0 m. Design of elements was conducted according to Eurocode codes, while load analysis was performed by computer program Autodesk Robot Structural Analysis Professional 2015 – Student Version. The grid elements are hot prefabricated circular hollow sections with quality of steel S 355.