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i <br /> I <br /> US& Lrapzoipal chaunel, J:1 side slopes <br /> R = Q�/Y81� 5112 = K n = 0.027 (see enclosed tablee) <br /> K = 18.41110.227►/0.5dIJ 0.00511i <br /> r ', K = 20.39 . . y/b = 0.08 y = 0.5' <br /> I <br /> . . b = 6.25' Use 6.5', S = 0.005 FL/Ft <br /> Channel: <br /> Bottom Wldth = 6.5' <br /> Slope = 0.005' <br /> Side Slope = 3:1 Max. <br /> Depth Flow = 0.5' <br /> Determine graeallned channel aize for control structure releaee rate, Alternate 24. <br /> ` qA = 0.76 CFS <br /> � � _ ��/�.817 _ 5112 <br /> , 6 = 10.76 0.11 0� <br /> 10.6°��110.005 1 <br /> � K = 0.02/10.167110.0711 <br /> K = 1.80 .�. y/b = 0.71 . . b = 0.704' <br /> Use one foot bottom widLh <br /> . . y/b = 0.5 . � Hydraulfc Radius = 0.301 <br /> � Find Velceity: <br /> V = 1.49/n RL� S�� = 1.49/0.027 0.301L� 0.005��= <br /> V = 1,76 FPS. <br /> Channel: Bottom Width = 1�0' <br /> Slopc = 0.005' FL/FL <br /> Side Slope = 3:1 Max. <br /> Deptt� of Flow = 0.5' <br /> i <br /> � <br /> I <br /> � <br />