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• <br />TAHHC-9 <br />PIPE CULVERT ANALYSIS <br />COMPUTATION OF CULVERT PERFORMANCE CURVE <br />April 10, 1990 <br />PROGRAM INPUT DATA: <br />DESCRIPTION VALUE <br />-------------------------------------------------------------------- <br />Culvert Diameter (feet) ................................. 2.00 <br />FHWA Chart Number (1,2 or 3) ............................ 2 <br />Scale Plumber on Chart (Type of Culvert Entrance)........ 3 <br />Manning's Roughness Coefficient (n-value) ............... 0.0240 <br />Entrance Loss Coefficient of Culvert Opening............ 0.50 <br />Culvert Length (feet) ................................... 270.0 <br />Culvert Slope (feet per foot ) ........................... 0.0530 <br />PROGRAM RESULTS: <br />• Flow Tailwater Headwater (ft) Normal Critical Depth at Outlet <br />Rate Depth Inlet Outlet Depth Depth Outlet Velocity <br />(cfs) (ft) Control Control (ft) (ft) (ft) (fps) <br />22.1 2.00 3.81 -2.42 1.33 1.68 1.33 9.93 <br />-------------------------------------------------------------------- <br />-------------------------------------------------------------------- <br />PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.5 Copyright (c)1986 <br />Dodson 8 Associates, Inc., 7015 W. Tidwell, ><107, Houston, TX 77092 <br />(713) 895-8322. All Rights Reserved. <br />• <br />