General Information

Figure 1 shows a steel canopy roof.

Canopy roof.
Steel canopy roof with two front columns

Trusses and Beams

Figure 2 shows a schematic layout of the roof.

Layout.
Structural layout of a canopy roof

The steel structure consists mainly of two front columns, a longitudinal front truss, transverse beams and trusses, a longitudinal back beam, purlins, and metal roofing sheets. Transverse trusses and beams are alternately arranged, and the width b ≅ 3.5 m. Figure 3 shows the canopy roof viewed from below.

Canopy roof.
Steel canopy roof structure

The transverse trusses and beams are connected to the RC balcony beam as shown in figures 4 and 5, respectively.

Transverse truss to RC balcony beam connection.
Connection between steel truss and reinforced concrete beam

The transverse trusses are connected to the RC balcony beam by the longitudinal back beam, vertical L-sections, and anchor bolts. The longitudinal back beam passes beneath the diagonal top end of the transverse trusses.

Transverse beam to RC balcony beam connection.
Connection between steel beam and reinforced concrete beam

The same connection elements used for the transverse trusses are used for the transverse beams. The transverse beams are placed over the longitudinal back beam.

  • Are transverse trusses required for structural reasons?
    How efficient is the structural concept?

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