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
r,.~„d„m ~o°n o~,.,oi~ i c,.~,,.,~~.
9
Stability
Class D w/o
Freeboard Stability
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 11.30 cfs 11.30 cfs
Depth: 0.52 R 0.82 ft 0.92 R 1.22 R
Top Width: 9.64 R 11.74 ft 12.47 ft 14.57 R
Velocity: 2.78 fps 1.32 fps
X-Section Area: 4.07 sq ft 8.53 sq ft
Hydraulic Radius: 0.416 0.670
Froude Number: 0.75 0.28
Roughness Coefficient: 0.0558 0.1609
Structure #4 (tegetated Channe/1
Terrace
Trapezoidal Vegetated Channel Inputs:
Material: Grass mixture
Left Right Freeboard Freeboard Freeboard Limiting
BoRom Sideslope Sideslope Slope (%) Retardance Mult. x Velocity
Width (ft) Ratio Ratio Classes Depth (ft) °!° of Depth (VxD) (f~)
8.00 4.0:1 11.4:1 2.5 D, B 0.30 4.(
Vegetated Channel Results:
Stability
Class D w/o
Freeboard Stabi{ity
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 6.29 [fs 6.29 cfs
Depth: 0.40 R 0.70 R 0.79 ft 1.09 ft
Top Width: 14.10 ft 18.72 ft 20.18 ft 24.80 ft,
Velocity: 1.44 fps 0.56 fps
X-Section Area: 4.38 sq R 11.15 sq R
Hydraulic Radius: 0.309 0.549
Froude Number: 0.45 0.13
Roughness Coefficient: 0.0747 0.2799
Structure #8 (Riprap Channel)
Steeper channe/ (NW)
Trapezoidal Riprap Channel Inputs:
Material: Riaraa
Filename: RP-4 terrace -final confguration - 100yr.scA Printed 07-28-2004