2011-07-26_PERMIT FILE - C1982057 ‎(3)‎

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 7/26/2011
• Doc Name: Postmine Drainage Channel Design
• Section_Exhibit Name: Tab 20 Attachment 20-1
• Media Type: D
• Archive: No

SEDCAD 4.0
f nmirinhf 1 OOA Pamolo 1 Ghu.~h
~, Channel 005-Gulch: Reach MM-LL - 5% Slope
Material: Grass mixture
Triangular Channel
Left Right
Retardance Freeboard Freeboard Freeboard Limiting
Velocity
Sideslope Sideslope Slope (%)
Classes Depth (ft) % of Depth Mult. x (fps)
Ratio Ratio (VxD)
3.0:1 3.0:1 5.0 D, B 0.30 5.0
Stability
Class D w/o
Freeboard Stability
Class D w/
Freeboard Capacity
Class B w/o
Freeboard Capacity
Class B w/
Freeboard
Design Discharge: 6.70 cfs 6.70 cfs
Depth: 0.82 ft 1.12 ft 1.25 ft 1.55 ft
Top Width: 4.94 ft 6.74 ft 7.51 ft 9.31 ft
Velocity: 3.29 fps 1.42 fps
X-Section Area: 2.04 sq ft 4.70 sq ft
Hydraulic Radius: 0.391 0.594
Froude Number: 0.90 0.32
Roughness Coefficient: 0.0540 0.1651
•
i
SEDCAD Utility Run Printed 05-21-2007
TR-59 20-1-55 Revised OS/07