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, ;�.� � .; <br />,; . � <br />� � �I '. <br />; ',' �, I � <br />H+ckman, Williarr�s & Associates, inc. <br />Surveyots + Engineers � Planners <br />Manning's Formula Solution For Open Channel Plow <br />project Name: <br />T'roject Nrmber: <br />pnte: <br />Drainage: <br />Design Flows ( cts ): <br />Storm Frequencies ( year): <br />Les Schwab-Everett <br />9512.07 • -.� , <br />22-Feb <br />B North) SwQ��- <br />0.69 1 1.4 <br />2 10 50 <br />Swale Length: ]UO feet <br />Fall: 0.5 feet <br />'1�pe of Swale: Grassed Trapezoidal <br />Botcom Width: 4 feet <br />Side Slope: ( x to 1) 3 <br />Roughness Caefficient ( n ): �•2 <br />pesign Slope: <br />Wetted <br />Depth Perimeur <br />0.1 <br />0.15 <br />0.2 <br />0.25 <br />0.3 <br />0,35 <br />0.4 <br />0.45 <br />0.5 <br />0.55 <br />0.6 <br />4.63 <br />4.95 <br />5.26 <br />5.58 <br />5.90 <br />6.21 <br />6.53 <br />6.85 <br />7,16 <br />7,48 <br />7.74 <br />0.0050 feetJfeet <br />Wetted Hydraulic Flow <br />Area Rndius (cfs) <br />0.43 <br />0.67 <br />0.92 <br />1.19 <br />1.47 <br />].77 <br />2.08 <br />2.41 <br />2,75 <br />3.11 <br />3.48 <br />0.093 <br />0.135 <br />0.175 <br />0,213 <br />0.249 <br />0.284 <br />0.319 <br />0.352 <br />0.384 <br />0.416 <br />0.0.46 <br />0.05 <br />0.09 <br />O.1S <br />0.22 <br />0.31 <br />0.40 <br />0.51 <br />0.63 <br />0.77 <br />0.91 <br />1.�7 <br />Velocity <br />(fps) <br />0.11 <br />0.14 <br />0.16 <br />0.19 <br />0.21 <br />0.23 <br />0.25 <br />0.26 <br />0.28 <br />O:L9 <br />0.31 <br />Time <br />(min) <br />� <br />. <br />� <br />0 <br />15.4 <br />�z.o <br />�.U.1 <br />8,9 <br />-- � 8.0 <br />7.3 <br />6.8 <br />6,4 �:.r <br />6.0 <br />5.7 " i� <br />5.4 <br />�_---�-- <br />Hlstorical Mill A auilding � 805 SW lndustrial Way, Suite 10 � Bend, Oregon 97702•1093 �(541) 399•8351 � FAX (541) 388•5418 <br />�`�4 <br />.;,;. <br />:.,3,:;; <br />:i:: :'.,; <br />;..: :. <br />; ; �,; ,. <br />