General Information

Figure 1 shows a covered sports court.

Covered sports court.
 Trussless curved roofing of a covered sports court

The steel structure consists mainly of self-supporting curved sheets, two longitudinal beams, and columns.

Self-Supporting/Trussless Curved Roofing

Figure 2 shows a front view of the structure.

Covered sports court.
Trussless curved roofing with main measures

The span s ≅ 30 m, the rise r ≅ 8 m, and the column spacing d ≅ 5 m. Figure 3 shows a structure sector.

Self-supporting/trussless curved roofing.
Structural connections of self-supporting/trussless curved roofing

The sheets have a thickness of about 1.5 mm, and the longitudinal beam has a square hollow cross-section (built-up section). The sheets and the longitudinal beam are connected by steel plates, which are bolted to the sheets and welded to the longitudinal beam. The connection between the column and the longitudinal beam consists of a stiffened cap plate (weld connection). Figure 4 shows a roof sector viewed from below.

Self-supporting/trussless curved roofing.
Self-supporting/trussless curved roofing viewed from below

The sheets are connected by mechanical seaming.

  • Why is it structurally possible to cover a span of about 30 meters with a 1.5-millimeter thick metal sheet only?
    What are the main pros and cons of self-supporting/trusless curved roofing?