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n <br />u <br />PIPE CULVERT ANALYSIS <br />COMPUTATION OF CULVERT PERFORMANCE CURVE <br />October 30, 1990 <br />• <br />PROGRAM INPUT DATA: <br />DESCRIPTION HRC-Y1 VALUE <br />Culvert Diameter (feet).. ............................ 3.00 <br />FHWA Chart Number (1,2 or 3) ............................ 2 <br />Scale Number on Chart (Type of Culvert Entrance)........ 3 <br />Manning`s Roughness Coefficient (n-value) ............... 0.0290 <br />Entrance Loss Coefficient of Culvert Opening............ 0.50 <br />Culvert Length (feet) ................................... 81.0 <br />Culvert Slope (feet per foot) ........................... 0.0500 <br />PROGRAM RESULTS: <br />Flow Tailwater Headwater (ft) <br />Rate Depth Inlet Outlet <br />(cfs) (ft) Control Control <br />13.9 2.00 1.75 -1.75 <br />Normal Critical Depth at Outlet <br />Depth Depth Outlet Velocity <br />(ft) (ft) (ft) (fps) <br />0.89 1.19 0.89 8.56 <br />-------------------------------------------------------------------- <br />-------------------------------------------------------------------- <br />PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.5 Copyright (c)1986 <br />Dodson 5 Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 77092 <br />(713) 895-8322. All Rights Reserved. <br /> <br />