Investigation of local scour around tandem piers for different skew-angles Sargol Memar, Mohammad Zounemat-Kermani, Ali-Asghar Beheshti, Giovanni De Cesare and Anton J. Schleiss E3S Web Conf., 40 (2018) 03008 Published online: 05 September 2018 DOI: 10.1051/e3sconf/20184003008