PERMFILE107845

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 7/5/2002
• Section_Exhibit Name: Exhibit 15 Fill 8 Ditch Design
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
Copyright f998 Pamela J. Schwab
Civil Software Design
Ir1
u
Structure Detai/:
Structure #1 ~lreQetated Channel,
D85 -vegetated ditch segment
Trapezoidal Vegetated Channel Inputs:
Material: Bermuda grass
Left
Bottom Right Freeboard Freeboard Freeboard
Retardance Limiting
Width ft) Sideslope
( Rati Sideslope
Ratio Slope (%) Classes ° Mult. x
Depth (ft) /o of Depth Velocity
s)
(f
o (VxD) p
6.00 2.5:1 2.5:1 13.8 D, B ~ 0.30 6.0
Vegetated Channel Results:

Stability
Class D w/o
Freeboard Stability
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 14.58 cfs 14.58 ds
Depth: 0.38 R 0.68 ft 0.65 ft 0.95 ft
Top Width: 7.92 ft 9.42 ft 9.23 ft 10.73 R
Velocity: 5.44 fps 2.96 fps
X-Section Area: 2.68 sq ft 4.92 sq ft
Hydraulic Radius: 0.332 0.519
Froude Number: 1.65 0.72
Roughness Coefficient: 0.0487 0.1205
Structure #2 (Erodible Channel
D85 -bedrock on steep slope
Trapezoidal Erodible Channel Inputs:
Material: sound rock
Bottom Left Right freeboard Freeboard Freeboard Limiting
Width (ft} Sideslope sideslope Slope (%) Manning's n Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) (fPs)
6.00 2.5:1 2.5:1 18.3 0.0250 0.30 I 13.0
Erodible Channel Results:

w/o Freeboard w/ Freeboard
Design Discharge: 17.25 ds
Depth: 0.26 ft 0.56 ft
Top Width: 7.32 ft 8.82 ft
6
Filename: DitchD85.sc4 Printed 02-27-2002