The task of the diploma thesis is the calculation of the main and secondary girders and the system for spatial stabilization of the sports hall located in Osijek. The floor plan dimensions of the hall intended for volleyball are 35x20 m, the height of the eaves is 9.02 m with a roof pitch of 15. The static system of the main girder is a three-hinged frame of a variable cross-section along the longitudinal axis, and of the secondary girders a simple beam of rectangular cross-section. The secondary girders rely on the main girders at an axial distance of 5.0 m. The material of the main girder is glued laminated wood of strength class GL24h. Secondary girders are made of solid wood of strength class C24. Spatial stabilization of the roof is performed as a system of soft diagonals of the circular cross-section of S275 steel quality. In the last part of the paper, the calculation of the joint in the ridge, the connection of the branches and the main girder, and the joint of the main girder and the foundation is presented. The analysis of the effect on the structure, which includes its own weight, snow, and wind, the calculation of the main and secondary girders, and the spatial stabilization of the building was carried out according to the currently valid HRN EN norms and regulations. Static analysis was performed on planar construction models in the computer program Autodesk Robot Structural Analysis Professional 2017 and graphical attachments were created using AutoCAD 2018.