PERMFILE138818

• Permit No: C1981018
• IBM Index Class Name: Permit File
• Doc Date: 10/13/2004
• Doc Name: Post-Reclamation Refuse Area Runoff and Sedimentology Calculations
• Section_Exhibit Name: Illustration 49
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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19
I • Structure #10 (Nu//I
Hau/Road
Structure #9 (t/ecLetated Channel)
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
Left Right
Bottom
Retardance Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%)
Width (ft)
Classes Mult. x
Depth (ft) % of Depth Velocity
Ratio Ratio (VxD) (fps)
6.00 5.0:1 3.0:1 0.9 D, B 0.30 5.0
Vegetated Channel Results:
`J
Stability
Class D w/o
Freeboard Stability
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 11.79 cfs 11.79 ds
Depth: 0.77 ft 1.07 ft 1.39 ft 1.69 ft
Top Width: 12.18 ft 14.58 ft 17.06 ft 19.48 ft
Velocity: 1.68 fps 0.74 fps
X-Section Area: 7.02 sq ft 15.98 sq ft
Hydraulic Radius: 0.567 0.917
Froude Number: 0.39 0.13
Roughness Coefficient: 0.0592 0.1856
Structure #8 (tegetated Channe/)
Trapezoida! Vegetated Channel Inputs:
Material: Grass mixture
Left Right
Bottom Retardance Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%)
Classes
Width (ft) Mult. x
Depth (ft) % of Depth Velocity
Ratio Ratio (VxD) (fps)
6.00 5.0:1 3.0:1 8.7 D, B 0.30 4.0
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: 12.15 ffs 12.15 cfs
Depth: 0.41 ft 0.71 ft 0.71 ft 1.01 ft
Top Width: 9.26 ft 11.66 ft 11.70 ft 14.10 ft
Filename: RP-5a terrace -final confgurationscA
Printed 07-26-2004