General Information
Figure 1 shows a covered sports tribune.
The roof structure consists of steel trusses, fly bracing, roof bracing, purlins, and metal roofing sheets.
Fly Bracing
Figure 2 shows a schematic cross-section of the covered tribune.
The truss is made of circular hollow sections and consists of a front span (l), a back span, and a suspension unit. The front span l ≅ 14 m, and the truss spacing ≅ 8 m. Figure 3 shows a bottom view of a roof sector.
The fly braces are made of lipped channels; they are placed along the front- and back spans and are connected to the bottom chords and purlins by bolted gusset plates, as shown in figure 4.
