Optimization of Piano Key Weir for Dam Mr. Ujeniya Vinodray D.*, Dr. Mehta Kautilya G.**, Mr. Khan Mohmood*** * Research Scholar, School of Engineering, RK University, Rajkot-Bhavnagar Highway, Rajkot-Gujarat, India ** Principal, Merchant Engineering Collage, Basana, Vishnagar, Gujarat, India *** Deputy Executive Engineer, GERI, Vadodara, Gujarat, India Online published on 27 February, 2017. Abstract Non gated spillways are most suitable for small of medium catchment area and for large catchment area gated spillway is more suitable. For safety and cost reason, the fully gated spillway will be avoided in near future and non gated spillway will be accepted solution. Non gated spillway is hydraulically more effective and safe in operation. The discharge capacity of spillway is directly propositional to the crest length. Many types of weirs have been developed with the purpose to increase the crest length. Among these types the recently developed, Piano key weirs prove to be more advantageous regarding hydraulic performance compare to ogee weirs. Moreover its small foundation width makes the Piano key weir cost effective solution to increase the discharge capacity. Still today only initiatory design procedure is available which cannot be generalized. Top Keywords Piano key weir, Ogee weir, Spillway. Top |