PERMFILE56184

• Permit No: C1981041
• IBM Index Class Name: Permit File
• Doc Date: 5/13/2002
• Doc Name: A-1 Roadway Drainage & Cross-Drainage Culvert Calculations
• Section_Exhibit Name: TAB 13 Appendix 13-1
• Media Type: D
• Archive: No

SEDCAD+ CULVERT SIZING UTILITY
Dip Sections with 30 CMP's
Design Discharge = 28.800 cfs
• Entrance Loss Coefficient 0.5
Pipe Length 30.000 feet
Pipe Slope = 2.500 ~
Manning's n = 0.024
Maximum Headwater = 3.200 feet
Tailwater Depth = 0.000 feet
Smallest Diameter Required to Pass Flow is 30 inches
Diameter: 30 inches
•
r~
L
Headwater Discharge Flow
(ft)
- (cfs)
---
-- Control
------------------------ Type
--------
------------
0.32 -----
--
0.96
Inlet
(Supercritical) -
3
0.64 2.69 Inlet (Supercritical) 3
0.96 4.93 Inlet (Supercritical) 3
1.28 7.59 Inlet (Supercritical) 3
1.60 10.60 Inlet (Supercritical) 3
1.92 13.93 Inlet (Supercritical) 3
2.24 17.55 Inlet (Supercritical) 3
2.56 21.44 Inlet (Supercritical) 3
2.88 25.59 Inlet (Supercritical) 3
3.20 28.90 Inlet 5
3.52 32.03 Inlet 5
3.84 34.88 Inlet 5
4.16 37.52 Inlet 5
4.48 39.98 Inlet 5
4.80 42.30 Inlet. 5

Total Dip section capacity = 6 Qa 28.9 cfs = 173.4 cfs
13-1-9 (New 12/16/96)