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<br />ATTACHMENT 13-7 <br />PIPE CULVERT ANALYSIS <br />COMPUTATION OF CULVERT PERFORMANCE CURVE <br />November 1, 1990 <br />PROGRAM INPUT DATA: Gz <br />DESCRIPTION VALUI <br />Culvert Diameter (feet) ................................. 5.00 <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) ............... 0.024 <br />Entrance Loss Coefficient of Culvert Opening............ 0.50 <br />Culvert Length (feet) ....... .......................... 160.0 <br />Culvert Slope (feet per foot) ........................... 0.020 <br /> <br />PROGRAM RESULTS: <br />Flow Tailwater Headwater (ft) Normal Critical Depth at Outle <br />Rate Depth Inlet Outlet Depth Depth Outlet Velocit <br />(cfs) (ft) Control Control (ft) (ft) (ft) (fps <br />94.8 4.00 4.43 2.06 2.'42 2.77 2.42 10.0 <br />------------------------------------------------------------------- <br />------------------------------------------------------------------- <br />PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.5 Copyright (c)198 <br />Dodson 8 Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 7709. <br />(713) 895-8322. All Rights Reserved. <br /> <br />