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OTRANSITIONS <br />I. The maximum angle between channel center- <br />line and transition walls should be 12.5'. <br />2. Sharp angles in alignment of transition struc- <br />tures should be avoided. <br />ODEBRIS BARRIERS <br />Debris barriers should be provided upstream of the <br />intake to prevent clogging. Where required, boulder <br />basins shall be provided upstream of the debris barrier. <br />OENERGY DISSIPATORS <br />Energy dissipators shall be used to dissipate energy <br />where necessary, and to transition the flow from a <br />lined channel to a normal flow in a unlined channel. <br />Z, <br />Energy dissipators may be any of the following types <br />such as the SAF basin, baffled chute, dentated sills, <br />buckets, impact, hydraulic jump, or other approved <br />designs. <br />j <br />SAF BASIN <br />A , - - ;.1'4111/. IIIItlUllltil <br />BAFFLED CHUTE <br />31111 <br />'11 I'l 11111mall R J i i'm <br />7V. <br />V. <br />Reference: "The SAF Stilling Basin" U. S. Sail Conserva <br />Conservation <br />-TP-79, May 1949 and "Hydraulic Design of <br />Service Report SCS t <br />Stilling Basins and Energy Dissipators" U. S. Bureau of Re- <br />IMPACT TYPE OUTLET <br />CIO-ation, Engineering Monograph No. 25. <br />12 <br />