TY - JOUR AU - Alias, Nor Azlina AU - Mohamed, Thamer Ahmed AU - Ghazali, Abdul Halim AU - Noor, Megat Johari Megat Mohd. PY - 2008 TI - Impact of Takeoff Angle of Bucket Type Energy Dissipater on Scour Hole JF - American Journal of Applied Sciences VL - 5 IS - 2 DO - 10.3844/ajassp.2008.117.121 UR - https://thescipub.com/abstract/ajassp.2008.117.121 AB - Scour holes formed downstream of bucket type energy dissipater may affect the safety and stability of the structure. In this study, a physical model is employed to study the impact of takeoff angle of bucket type energy dissipater on the scour hole. The area of longitudinal profile of the scour hole is used to evaluate the seriousness of the scour at downstream of the bucket type energy dissipater. Experimental results showed that the takeoff angle of 45° is the optimum angle which gives minimum longitudinal area of the scour hole. Also, validation of selected equations for predicting maximum scour depth at downstream of the bucket type energy dissipater showed that the equation proposed by Schoklitsch gave minimum error (33%) [1].