General Information
Figure 1 shows a steel canopy roof.
Suspension Rod
Figure 2 shows the canopy roof.
The span s ≅ 12 m, and the span b ≅ 3 m. Figure 3 shows a front view of a canopy roof sector.
The canopy roof has a single suspension rod with a square hollow cross section, which is placed in the mid-span front truss region and connects the canopy roof with the balcony handrail. The suspension rod is connected to the canopy roof as shown in figure 4.
The suspension rod is connected to an L-plate by welding; the L-plate is connected to a purlin by a metal sheet screw. Figure 5 shows the connection region viewed from below.
The purlin is connected to the front truss by the transversal beam, which overhangs from the front truss.
Does the canopy roof have a structural safety or serviceability problem without the suspension rod?
Front Truss to Front Column Connection
The front truss is connected to the front columns as shown in figure 6.
The bottom chord is connected to the front column by a welded seat angle; the upper chord, by a weld seam. The front column consists of a circular hallow profile.
What are the main problems?