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� <br />+; ;� i i �� Hickman, William� & Associates, lnc. <br />� �, ;.� <br />��i %; .. '. .''.i Surveyors � Enginaers • Plannersu <br />Manning's Formula Solution For Open Channel Flow <br />Project Name: <br />Project Number: <br />Date: <br />Drainage: <br />� Lesign Flows ( cfs ): <br />Storm Frequencies ( year): <br />Les Schwab-Eve�ett <br />951207 <br />22-Feb <br />B North) Gutter <br />0.69 1 1•'1 <br />Z ZO 50 <br />Curb Length: 100 feet <br />Fall: 0.75 fcct <br />Type of Surfacing: Asphalt <br />C�rb Height: 0.5 feet <br />Cross 51ope: ( fcct/fcet ) 0.012 <br />Roughness Cozfficient ( n ): 0.016 <br />Design Slope; <br />Q.0075 fceilfeet <br />Wetted Wetted Wetted Hydraulic Flow Velocicy Time <br />Depth Width Perimeter Area Radius (efs) (fps) (m�) <br />0.025 <br />0.05 <br />0.075 <br />0.1 <br />0,�25 <br />0.15 <br />0.175 <br />0.2 <br />0,7.25 <br />o.zs <br />0.275 <br />0.3 <br />• U5E <br />. <br />2.1 <br />4.2 <br />6.3 <br />8.3 <br />1 p.4 <br />12.5 <br />14.6 <br />16.7 <br />18.8 <br />zo.s <br />22.9 <br />25.0 <br />2.11 <br />4.22 <br />6.33 <br />8.43 <br />10,54 <br />12.65 <br />14.76 <br />16.87 <br />18,9$ <br />2t.08 <br />23.19 <br />25.30 <br />0.03 <br />0.10 <br />0.23 <br />0.42 <br />0.65 <br />0.94 <br />1.28 <br />1.67 <br />2.11 <br />2.6� <br />3.15 <br />3.75 <br />0.012 <br />0.075 <br />0.037 <br />o.oc9 <br />0.062 <br />0.074 <br />0.086 <br />0.099 <br />0.111 <br />0.124 <br />0.136 <br />0.148 <br />Io' c�zc� �91►J o�FSET <br />0.01 <br />0.07 <br />0,21 <br />o.as <br />0.82 <br />1.33 <br />2.U1 <br />2.87 <br />3.93 <br />5.21 <br />6.71 <br />8.46 <br />0.43 <br />0,68 <br />0.90 <br />x.os <br />1.26 <br />1.42 <br />1.5� <br />1.72 <br />1.86 <br />2.00 <br />2.13 <br />2,26 <br />i <br />3.9 <br />2.4 <br />1.9 <br />1.5 <br />1.3 �""..`� <br />J..2 <br />1.1 <br />1.0 <br />0.9 <br />0.8 <br />o,s <br />0.7 <br />Hisforical Mill A Building � 805 SW IndustrJal Way, SuNe 10 � Bend, Oregon 97702-1093 •(547) 389•9351 � FAX (541) 3B8•5416 <br />