2001-12-11_PERMIT FILE - C1996084 ‎(10)‎

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Exhibit 15-16 Mine Area P2 SEDIMENT CONTROL POND 2-2
• Media Type: D
• Archive: No

SEDCAD 4 for Windows ~o r; ~ ~- 1=-:' ~ . ~ .• -
Copyright 1998 Pamela J. Schwab
Civil Software Design
2
Structure #3 (Riprap Channel
• S-3
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left
Bottom Right Freeboard Freeboard Freeboard
Sidesla a
Width (ft)} Ratiop Sideslo a
Ratiop Sloe
p ( )
Depth (ft) %of Depth
(VxD)
8.00 3.0:1 3.0:1 17.0 0.30
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
r ~
LJ
w/o Freeboard w/ Freeboard
Design Discharge: 19.09 cfs
Depth: 0.19 ft 0.49 ft
Tap Width: 9.16 ft 10.96 ft
Velocity':
X-Section Area: 1.66 sq ft
Hydraulic Radius: 0.180
Froude Number':
Manning's n':
Dmin: 3.00 in
D60: 9.00 in
Dmax: 11.25 in
Velocity and Manning's n calculations may not apply for this method.
Structure #13 Ri rap Channel)
S-9
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right Freeboard Freeboard Freeboard
Width (ft)} Sideslope Sideslope Slope (%) Depth (ft) %of Depth Mult. x
Ratio Ratio (VxD)
8.00 3.0:1 3.0:1 35.0
•
Riprap Channel Results:
Simons/OSM Method -Steep Slope Design
Filename: Ditches Pond 2-182 W 100.sc4 Printed 04-19-2001