The collapse of a temporary structure
The latest collapses of entertainment structures in the USA and Europe brought the society's attention on the study of their safety. Among the most recent collapses there are the one of Radiohead's concerts in Toronto in 2012, the collapse of Jovanotti's stage concert in Trieste and Laura Pausini's one in Reggio Calabria in 2011. In this paper a specific metal truss structure made of aluminium was taken into consideration. A back analysis of the collapse of this metal truss structure is developed and produces a flow chart that points out the possible causes that led the structure to the collapse. By means of non linear analyses by Finite Element Model (FEM) the failure sequence of this particular structure is shown and forensic investigation concerning the whole phase of the construction phase is performed, starting from the design one, through the assembling and ending with the rigging phase.