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Project: 154016 - POE WATERFRONT PLACE CENTRAL <br />1736 Fourth Avenue S, Suite A Sheet Number: I of 4 <br />© ® Seattle, Washington 98134 <br />phone 206.624.1387 Calculated by: CWC Hate: 10/21/16 <br />fax 206.624.1388 Checked by: CRW Date: 10/23/16 <br />Wier Elevation Check - Fisherman's Harbor A 25 Year <br />Reference plan sheet C3.09 for Fisherman's Harbor A Storm Treatment <br />1) Pipe Head Loss (Friction): 2.15(Q)(n) A <br />hf = x L <br />D2.667 <br />Prise 1: <br />Pipe Diameter, d = 24 in Area, A = P628 <br />sf <br />Flow, Q = 4.29 cfs Hydraulic Radius, R.= ft <br />Manning's Coef., n = 0.012 Wetted Perimeter ft <br />Length, L = 39.79 if <br />2.15(Q)(n) A <br />hf = D2.667 <br />Pipe 2: <br />x L = 0.012 <br />NOTES & REFERENCES <br />Computational Methods <br />WSDOT Hydraulics Manual <br />WSDOT Hydraulics Manual <br />Eauation 6-4 <br />'Hydraulics Manual <br />6 <br />=0.012, per Civil Engineering I <br />;ference Manual, App 19.A <br />Pipe Diameter, d = 24 in Area, A = M62 <br />sf Flow Calculated using Rational <br />Flow, Q = 4.29 cfs Hydraulic Radius, R =ft Method - See Attached <br />Manning's Coef., n = 0.012 Wetted Perimeterft <br />Length, L = 69.56 if <br />5 n " 2 <br />hf = x L = 0.021 <br />D2.667 <br />Pipe 3a: <br />Pipe Diameter, d = 24 in Area, A = P628 <br />sf <br />Flow, Q = 4.29 cfs Hydraulic Radius, R.= ft <br />Manning's Coef., n = 0.012 Wetted Perimeter ft <br />Length, L = 11.39 if <br />(Q)() <br />2.15 n " 2 <br />hf = D2.667 x L = 0.003 <br />Total Pipe Head Loss (Friction) = 0.037 <br />