Challenge Journal of Structural Mechanics is an international, quarterly published and open access scholarly journal that publishes original research articles as well as review articles, case studies, short communications, discussions, book reviews, letters to the editor and a diary on international events related to any aspect of structural engineering. Primary aim of CJSMEC is to encourage academic challenges in structural mechanics and materials disciplines to seek for the global truth. Therefore, the Journal intends to publish at least a review or discussion as a challenge to previously published papers at each issue. A double blind peer-review policy is followed in order to increase the scientific quality of the published papers.