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( TABLE 13-9-2 <br />PIPE CULVERT ANALYSIS <br />COMPUTATION OF CULVERT PERFORMANCE CURVE <br />July 30, 1990 <br />PROGRAM INPUT DATA: <br />DESCRIPTION <br />-------------------------------------------------------- <br />Culvert Diameter (feet) ................................. <br />FHWA Chart Plumber (1,2 or 3) ............................ <br />Scale Number on Chart (Type of Culvert Entrance)........ <br />Manning `s Roughness Coefficient (n-valve) ............... <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 />0.0290 <br />0.50 <br />60.0 <br />0.0500 <br />PROGRAM RESULTS: <br />Flow Tailwater Headwater (ft) Normal <br />Rate Depth Inlet Outlet Depth <br />(cfs) (ft) Control Control (ft) <br />--- <br />- <br />C 20.0 ----- <br />2.00 - <br />2.50_ __=0._12_ __1._11 <br />25.0 2.50 2.96 0.86 1.25 <br />27.0 2.50 3.14 1.09 1.32 <br />30.0 2.50 3.50 1.46 1.90 <br />32.0 ~ 2.50 3.70 1.73 1.96 <br />35.0 2.50 9.16 2.16 1.55 <br />37,0 2.50 9.49 2.48 1.61 <br />90.0 2.50 5.02 2.98 1.71 <br />Critical Depth at Outlet <br />Depth Outlet Velocity <br />----(ft) <br />- (ft) <br />--------- (~ <br />---- <br />1.52 1.11 9.52 <br />1.70 1.25 10.16 <br />1.77 1.32 10.31 <br />1.87 1.40 10.62 <br />1.93 1.96 10.77 <br />2.01 1.55 10.99 <br />2.06 1.61 11.08 <br />2.13 1.71 11.19 <br />-------------------------------------------------------------------- <br />-------------------------------------------------------------------- <br />PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.5 Copyright (c)1986 <br />Dodson S Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 77092 <br />(713) 895-8322. All Rights Reserved. <br />• <br />ti <br />13-9-4 <br />