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
(:nmmnMf 1°OA Damcl° I Crhw~F
left Right
Bottom Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft)} Mult. x
Depth (ft) % of Depth
Ratio Ratio (VxD)
6.00 3.0:1 7.0:1 13.1 0.30
Riprap Channel Results:
PADER Method -Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 17.20 cfs
Depth: 0.40 ft 0.70 ft
Top Width: 10.01 ft 13.01 ft
Velocity: 5.35 fps
X-Section Area: 3.21 sq ft
Hydraulic Radius: 0.318
Froude Number: 1.66
Manning's n: 0.0470
Dmin: 2.00 in
DSO: 3.00 in
Dmax: 4.50 in
Structure #2 (Vegetated Channel)
Lower channel
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
10
Left Right
Retardance
Bottom Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%)
Classes
Width (ft) R
ti
R
ti Mult. x
Dep[h (ft) % of Depth Velocity
s)
(f
a
a
o
o (VxD) p
6.00 3.0:1 10.0:1 3.9 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: 19.63 cfs 19.63 cfs
Depth: 0.61 ft 0.91 ft 1.03 ft 1.33 R
Top Width: 13.97 ft 17.87 ft 19.44 ft 23.34 ft
Velocity: 3.21 fps 1.49 fps
X-Section Area: 6.12 sq ft 13.15 sq ft
Hydraulic Radius: 0.435 0.671
Froude Number: 0.85 0.32
Filename: RP-0 terrace -final confguration - 100yr.srA Printed 07-28-2004