General Information

Figure 1 shows a covered sports arena.

The steel structure consists mainly of columns, trusses, beams, purlins, and metal roofing sheets. The columns are made of square hollow sections, the trusses and beams are made of circular hollow sections, and the purlins are made of rectangular hollow sections.

Trusses

Figure 2 shows a schematic layout of the columns.

There are six front and six back columns; the longitudinal spacing l ≅ 6 m, and the transverse spacing t ≅ 4 m. Figure 3 shows a roof structure sector viewed from below.

There are four types of trusses: three longitudinal (labeled with 1 to 3) and one transverse. Longitudinal truss 1 is placed over the front columns, longitudinal truss 2 is placed over the back columns, and longitudinal truss 3 is placed between the front and back columns. The transverse beams are placed between the transverse trusses (one beam between two transverse trusses) and have a spacing of l. Figure 4 shows a schematic three-dimensional view of the structure.

Figure 5 shows a schematic three-dimensional view of a variant that consists of columns (same arrangement as the used variant), transverse and longitudinal beams, purlins, and metal roofing sheets.

The columns, transverse and longitudinal beams are made of square hollow sections, while the purlins are made of rectangular hollow sections.