2018-01-31_PERMIT FILE - C1981019A ‎(8)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 1/31/2018
• Doc Name: West Taylor Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part C -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
( —,—ht 1 QQR _9M n P—i. I Crharsh
Velocity and Manning's n calculations may not apply for this method.
Structure #11 (VeL7etated Channel
West Terrace Ditch
Triangular Vegetated Channel Inputs:
Material: Tall fescue
Left Right Freeboard Freeboard Freeboard Limiting
tarclan
Sideslope Sideslope Slope (%) R Classes
Mult. x Velocity
Ratio Ratio ClassDepth (ft) % of Depth (VxD) (fps)
1.5:1 3.0:1 1.5 D, B 2.00 5.L
Vegetated Channel Results:
w/o Freeboard w/ Freeboard
Hydraulic Radius:
0.193 ft
Froude Number*:
Design Discharge:
Manning's n*:
Dmin:
5.00 in
D50:
15.00 in
Dmax:
18.75 in
Velocity and Manning's n calculations may not apply for this method.
Structure #11 (VeL7etated Channel
West Terrace Ditch
Triangular Vegetated Channel Inputs:
Material: Tall fescue
Left Right Freeboard Freeboard Freeboard Limiting
tarclan
Sideslope Sideslope Slope (%) R Classes
Mult. x Velocity
Ratio Ratio ClassDepth (ft) % of Depth (VxD) (fps)
1.5:1 3.0:1 1.5 D, B 2.00 5.L
Vegetated Channel Results:
Structure #7 (R/prap Channel)
27+50 & 50+00 to 80+00 - West Trib
Trapezoidal Riprap Channel Inputs:
Material: Riprap
0
Filename: TR -117 Post Mining 25 YR 24 HR.sc4 Printed 11-10-2017
Stability
Class D w/o
Freeboard
Stability
Class D w/
Freeboard
Capacity
Class B w/o
Freeboard
Capacity
Class B w/
Freeboard
Design Discharge:
11.73 cfs
11.73 cfs
Depth:
1.39 ft
3.39 ft
2.04 ft
4.04 ft
Top Width:
6.23 ft
15.23 ft
9.19 ft
18.19 ft
Velocity:
2.72 fps
1.25 fps
X -Section Area:
4.32 sq ft
9.39 sq ft
Hydraulic Radius:
0.633 ft
0.933 ft
Froude Number:
0.58
0.22
Roughness Coefficient:
0.0494
0.1394
Structure #7 (R/prap Channel)
27+50 & 50+00 to 80+00 - West Trib
Trapezoidal Riprap Channel Inputs:
Material: Riprap
0
Filename: TR -117 Post Mining 25 YR 24 HR.sc4 Printed 11-10-2017