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8-49 <br /> . IGURE 804-3D <br /> FLOW SHEAR <br /> 2.0 <br /> W = Bottom width of channel <br /> y = Depth of water <br /> 1.8 <br /> Side <br /> 1.6 <br /> slope7 <br /> 6 <br /> CS 1.4 <br /> 4 <br /> 1.2 <br /> 1.0 2 <br /> wiy <br /> 0.6 <br /> 0 1 3 4 S 6 7 8 <br /> Maximum Boundary Shear Stress on SIDES of Trapezoidal <br /> Channels <br /> 1.8 <br /> Side <br /> t.6 S/ape <br /> Z= <br /> ` 6 <br /> C b 1.4 4 <br /> 3 <br /> 2 <br /> 1.5 <br /> i.2 <br /> wiy <br /> lA <br /> 1 2 4 8 <br /> Maximum Boundary Shear Stress on BOTTOM of Trapezoidal <br /> Channels <br /> 3. <br /> T — 1w/oter surface width <br /> Red/us Mean radius of bend <br /> CC 2. <br /> T1Rodius <br /> 1 <br /> 0 0.2 0.4 0.6 0.8 <br /> l Maximum Boundary Shear Stress for Flow In Bends <br />