General Information

Figure 1 shows a steel canopy roof.

Canopy roof.
Steel canopy roof with hanger rods.

Hanger Rods

Figure 2 shows the canopy roof.

Canopy roof.
Steel canopy roof with hanger rods.

The width b ≅ 3 m, and the length l ≅ 8 m. The canopy roof has four hanger rods with a square hollow cross section, which are placed in pairs and connected to the reinforced concrete structure of the building. Figure 3 shows a schematic partial three-dimensional view of the structure.

Three-dimensional view.
Three dimensional drawing of a steel canopy roof with four hanger rods.

The hanger rods are connected to the canopy roof as shown in figure 4.

Hanger rods to canopy roof connection.
Connection between two hanger rods and canopy roof.

Hanger rod 1 is connected to a purlin, which connects the transverse beams by short rectangular hollow profiles; hanger rod 2 is connected to the longitudinal front beam. The hanger rods are joined by welding.

  • Does hanger rod 1 carry the same load as hanger rod 2?
    What are some possible reasons for using four hanger rods?