2013-02-25_PERMIT FILE - C1982057A ‎(4)‎

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 2/25/2013
• Doc Name: Culvert Calculations ‎(Pgs 13-7-1 to 13-7-170)‎
• Section_Exhibit Name: Tab 13 Attachment 13-7
• Media Type: D
• Archive: Yes

•
PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
October 31, 1990
PROGRAM INPUT DATA: RRC-C1
DESCRIPTION VALUE
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Culvert Diameter (feet) ................................. 4.00
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) ................................... 140.0
Culvert Slope (feet per foot) ........................... 0.020C
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)
•
- ----------- --------------- -------- -------- -
75.1 3.00 4.47 2.64 2.42 2.62 2.42 9.4-
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PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.5 Copyright (c)1986
Dodson S- Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 7709-2-
[phone]. All Rights Reserved.