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<br />PIPE CULVERT ANALYSIS <br />COMPUTATION OF CULVERT PERFORMANCE CURVE <br />October 21, 1991 <br />SENECA II MINE <br />CULVERT 61A <br />PROGRAM INPUT DATA: <br />DESCRIPTION VALUE <br />-------------------------------------------------------------------- <br />Culvert Diameter (feet) ................................. 2.00 <br />FHWA Chart Number 11,2 or 3) ............................ 2 <br />Scale Number on Chart (Type of Culvert Entrance)........ 3 <br />Manning's Roughness Coefficient In-value) ............... 0.0240 <br />Entrance Loss Coefficient of Culvert Opening............ 0.50 <br />• Culvert Length (feet) .........:::::::::::::::::::::::::: 80.0 <br />Culvert Slope (feet per footl. 0.0500 <br />-------------------------------------------------------------------- <br />-------------------------------------------------------------------- <br />PROGRAM RESULTS: <br />Flow Tailwater Headwater Ift) Normal Critical Depth at Outlet <br />Rate Depth Inlet Outlet Depth Depth Outlet Velocity <br />lcfsl lft) Control Control (ftl (ft) lft) lfpsl <br />12.7 1.00 2.16 -1.12 0.96 •1.28 0.96 8.58 <br />-------------------------------------------------------------------- <br />-------------------------------------------------------------------- <br />PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.7 Copyright (c)1986 <br />Dodson & Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 77092 <br />(7131 895-8322. All Rights Reserved. <br />• <br />12-2-200 <br />