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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: H6 <br />DESCRIPTION <br />--- VALU( <br />--------------------------------------------------------- <br />Culvert Diameter (feet) ... ............................. -------- <br />2.00 <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) ....... .......................... 120.0 <br />Culvert Slope (feet per foot) ........................... 0.050 <br /> <br />PROGRAM RESULTS: <br />Flow Tailwater Headwater (ft) Normal Critical Depth at Outle- <br />Rate Depth Inlet Outlet Depth Depth Outlet Velocity <br />(cfs) (ft) Control Control (ft) (ft) (ft) <br />---- <br />------------- (fps <br />- <br />----- <br />------------------------------------------- <br />3.1 1.00 0.87 -4.59 0.45 0.61 0.45 - <br />- <br />5. 7: <br />-------------------------------------------------------------------- <br />PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.5 Copyright (c)198i <br />Dodson 8 Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 7709: <br />(713) 895-8322. All Rights Reserved. <br />• <br />