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<br />PIPE CULVERT ANALYSIS <br />COMPUTATION OF CULVERT PERFORMANCE CURVE <br />August 30, 1994 <br />GENERIC CULVERT DESIGN <br />LIGHT USE ROADS <br />PROGRAM INPUT DATA: <br />DESCRIPTION <br />Culvert Diameter (feet) ..... ........................... <br />FHWA Chart Number (1,2 or 3) ...... ..................... <br />Scale Number on Chart (Type of Culvert Entrance)........ <br />Manning`s Roughness Coefficient (n-value) ............... <br />Entrance Loss Coefficient of Culvert Opening............ <br />Culvert Length (feet) ....... ........................... <br />Culvert Slope (feet per foot) ........................... <br />VALUE <br />2.50 <br />2 <br />3 <br />0.0240 <br />0.50 <br />60.0 <br />0.0500 <br />PROGRAM RESULTS: <br />• Flow Tailwater Headwater (ft) Normal Critical Depth at Outlet <br />Rate Depth Inlet Outlet Depth Depth Outlet Velocity <br />(cfs) <br />-------- (ft) <br />----------- Control <br />-------- Control <br />-------- (ft) <br />------- (ft) <br />-------- (ft) <br />---------- (fps) <br />-------- <br />20.0 2.00 2.50 -0.12 1.11 1.52 1.11 9.52 <br />25.0 2.50 2.96 0.86 1.25 1.70 1.25 10.16 <br />27.0 2.50 3.14 1.09 1.32 1.77 1.32 10.31 <br />30.0 2.50 3.50 1.46 1.40 1.87 1.40 10.62 <br />32.0 2.50 3.70 1.73 1.46 1.93 1.46 10.77 <br />35.0 2.50 4.16 2.16 1.55 2.01 1.55 10.99 <br />37.0 2.50 4.49 2.48 1.61 2.06 1.61 11.08 <br />40.0 2.50 5.02 2.98 1.71 2.13 1.71 11.19 <br />PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.7 Copyright (c)1986 <br />Dodson & Associates, Inc., 7015 W. Tidwell, X107, Houston, TX 77092 <br />(713) 895-8322. All Rights Reserved. <br /> <br />