Scour was the removal of material from the bed and banks of a channel by the action of water, structures built in channels were exposed to scour.The factors of safety of the these structures against undermining and piping could be decreased as a result of the scour downstream of them So, considerable sums of money could be expended to repair the damage caused by the local scour.The study of this phenomenon constituted an important field of research due to its frequent occurrence in engineering application. The objective of this research was to investigate the influence of using openings in...