PERMFILE121709

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: CULVERT CALCULATIONS
• Section_Exhibit Name: TAB 12 APPENDIX 12-2 PART 2
• Media Type: D
• Archive: No

PIPE CULVERT ANALYSIS
COhPUTATION OF CULVERT PERFORMANCE CURVE
October 2, 1989
PROGF2AM INPUT DATA:
DESCRIPTIv^N VALUE
Culvert Diameter (feet) ................................. 1.50
FHWA Chart Number (1,2 or 3) ............................ 2
Scale Number on Chart (Type of Culvert Entrance)........ 3
Manning's Roughness Coefficient (n-value) ............... 0.0240
Entrance Loss Coefficient of Culvert Opening............ 0.50
Culvert Length (feet) ................................... 28.0
Culvert Slope (feet per foot) ........................... 0.0360
PROGRAM RESULTS:
Flow Tailwater Headwater (ft) Normal Critical Depth at Outlet
Rate Depth Inlet Outlet Depth Depth Outlet Velocity
(cfs) (ft) Control Control (ft) (ft) (ft) (fps)
0.4 0.50 0.29 -0.15 0.20 0.21 0.20 2.91
PIPE CULVERT ANALYSIS COhPUTER PROC~2AM Version 1.5 Copyright (c)1986
Dodson & Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 77092
[phone]. All Rights Reserved.
u
12-2-127