2001-12-11_PERMIT FILE - C1996084 ‎(7)‎

• Permit No: C1996084
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 15-20 MINE AREA P4 SEDIMENT CONTROL POND 4-3
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
Copyright 1998 Pamela J. Schwab
Gwl Sotnvare Design
•
Structure Detai/;
Structure #3 (Erodible Channel)
west fill ditch
Trla rodible Channel Inputs:
Material: Cobbles and shingles
LeR Right Freeboard Freeboard Freeboard Llmiting
sideslope sideslope slope (%) Manning's n Mult. x Velocity
Ratio Ratio Depth (R) % of Depth (VxD) (fps)
2.5:1 2.5:1 1.0 0.0350 0.30 5.5
Erodible Channel Results:
u
w/o Freeboard w/ Freeboard
Design Discharge: 7.33 cfs
Depth: 1.05 ft 1.35 R
Top Width: 5.27 R 6.77 R
Velocity: 2.64 fps
X-Section Area: 2.77 sq R
Hydraulic Radius: 0.489
Froude Number: 0.64
Structure #2 (Erodible Channel
south ditch
nangular Erodible Channel Inputs:
Material: Cobbles and shingles
~ (~!~"
~. 1 Zr~~-
LeR Right Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Mult. x Velocity
Ratio Ratio Depth (R) % of Depth (VxD) (fps)
2.5:1 2.5:1 1.0 0.0350 0.30 5.5
•
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 6.46 ffs
Depth: 1.00 ft 1.30 ft
Top Width: 5.02 R 6.52 R
Velocity: 2.56 fps
X-Section Area: 2.52 sq R
Hydraulic Radius: 0.466
~`
~~~~~
s ~'
S i~~.
Filename: Ditches Pond 4-3 (except D-1).sc4 Printed 04-19-2001