“…The observable relatively large failure rate of temporary structures, with important consequences in many cases, suggests that the implicitly admissible risks associated with such structures or activities might be too high in relation to generally accepted risk levels corresponding to permanent structures under persistent situations, referring to conditions of normal use within a time period of the order of the design working life (EN 1990(EN , 2002. André et al (André, Beale, & Baptista, 2012a) support this statement by affirming that due to a lack of a consistent approach in current design codes, the reliability levels associated with temporary structures exhibit a great variation and are often smaller compared to permanent structures. Indeed, for the time being the current codes and standards do not provide a coherent framework for design or assessment of structures under temporary use and there is a need for guidelines with respect to the choice of appropriate target reliability levels (Caspeele, Steenbergen, & Taerwe, 2013).…”