Page - 690 - in Book of Full Papers - Symposium Hydro Engineering

similarity in shape, dimensions, and roughness of the material in the prototype have closely resembled. It should be noted that the reproduction of shape and dimensions in the model is focussed in the shape and hydraulic measurements that influence the flow pattern and is intended to closely simulate the hydraulical field conditions as can be seen in Table 1. The geometric scale of Cisokan Upper Dam Spillway model is selected to be 1 to 33⅓. Table 1 The Dimension of Upper Dam Spillway model DIMENSION OF STRUCTURES PROTOTYPE MODEL Height of dam 75.5 m 2.265 m Width of dam crest 6.5 m 0.195 m Height of spillway crest 71.50 m 2.145 m Width of spillway crest 10.00 m 0.3 m Height of end sill 21.2 m 0.636 m Design discharge PMF 2.70 m 0.081 m Design discharge 1000 years 300 m3/s 46.77 m3/s Design discharge 100 years 185 m3/s 28.84 m3/s Debit discharge 2 years 42.7 m3/s 6.656 m3/s Fig. 2. Dam model in the hydraulic laboratory 690