General Information

Figure 1 shows a schematic three-dimensional view of a freestanding steel carport.

The steel structure consists mainly of five truss columns, five knee-braced beams, a tie truss, purlins, and metal roofing sheets.

Carport Collapse

Figure 2 shows the carport after a wind storm.

The wind storm caused a global stability failure. Figure 3 shows a truss column base.

The base plates were placed under the asphalt layer. Figure 4 shows a further truss column base.

The front sector of the base plate is missing, and a horizontal rebar under the asphalt layer is noticeable.