PERMFILE133500

• Permit No: C1994082
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: LIGHT USE ROADS GENERIC CULVERT DESIGNS
• Section_Exhibit Name: TAB 13 ATTACHMENT 13-9
• Media Type: D
• Archive: No

PIPE CULVERT ANALYSIS
COMPUTATION OF CULVERT PERFORMANCE CURVE
August 31, 1994
GENERIC CULVERT DESIGN
LIGHT USE ROADS
PROGRAM INPUT DATA:
DESCRIPTION
Culvert Diameter (feet) .................................
FHWA Chart Number (1,2 or 3) ............................
Scale Number on Chart (Type of Culvert Entrance)........
Manning`s Roughness Coefficient (n-value) ...............
Entrance Loss Coefficient of Culvert Opening............
Culvert Length (feet) ...................................
Culvert Slope (feet per foot) ...........................
VALUE
3.50
2
3
0.0240
0.50
60.0
0.0500
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)
--------
-
55.0 -
--
--
2.00 --
--
3.98 -
-
1.28 1.65 2.32 1.65 12.35
60.0 3.00 4.25 1.63 1.73 2.43 1.73 12.62
65.0 3.00 4.60 1.93 1.83 2.53 1.83 12.81
70.0 3.00 4.91 2.28 1.90 2.62 1.90 13.10
73.0 3.00 5.07 2.50 1.95 2.68 1.95 13.22
75.0 3.00 5.25 2.65 1.98 2.71 1.98 13.33
77.0 3.00 5.43 2.81 2.02 2.74 2.02 13.39
80.0 3.00 5.71 3.04 2.07 2.79 2.07 13.51
85.0 3.00 6.20 3.46 2.15 2.87 2.15 13.71
PIPE CULVERT ANALYSIS COMPUTER PROGRAM Version 1.7 Copyright (c)1986
Dodson & Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 77092
[phone]. All Riqhts Reserved.