Regarding a smooth spillway, the presence of the steps increase the resistance offered to the flow and decreases the zone length of reverse flow due to the plunging flow. About this theme, it can cite Yasuda e Ohtsu (2000).
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Hubert Chanson, Civil Engineering, The University of Queensland, Australia
This web site was launched by Prof. Michele Mossa of the Polytechnic University of Bari (Italy) with the initial support of Fondazione Caripuglia, Bari, Italy for the Research Project LIC-MON of 2003 and of the Project IMCA (Integrated Monitoring of Coastal Areas) financed by MIUR PON D.M. 593/00. Later, the initiative was supported with other Prof. Michele Mossa’s funds, most recently provided by the RITMARE Project.