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
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Structure Detail:
Structure #12 (Vegetated Channel)
East Terrace Ditch
Triangular Vegetated Channel Inputs:
Material: Tall fescue
Left Right Freeboard Freeboard Freeboard Limiting
Retardance Velocity
Ratio Sideslope Si Ratio pe Slope (%) Classes I Depth (ft) % of Depth (VxD) I (fps)
3.0:1 1.5:1 1.5 D, B 2.00 5.(
Vegetated Channel Results:
Structure #10 (R/prap Chann%�
ET9-1 - East Trib Ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope (%) Mult. x
Width (ft) Ratio Ratio Depth (ft) % of Depth (VxD)
12.00 3.0:1 3.0:1 3.4 2.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 32.17 cfs
Filename: TR -117 Post Mining 10 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:
7.21 cfs
7.21 cfs
Depth:
1.20 ft
3.20 ft
— 1.83 ft
3.83 ft
Top Width:
5.40 ft
14.40 ft
8.25 ft
17.25 ft
Velocity:
2.23 fps
0.95 fps
X -Section Area:
3.24 sq ft
7.57 sq ft
Hydraulic Radius:
0.548 ft
0.838 ft
Froude Number:
0.51
0.18
Roughness Coefficient:
0.0549
0.1702
Structure #10 (R/prap Chann%�
ET9-1 - East Trib Ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope (%) Mult. x
Width (ft) Ratio Ratio Depth (ft) % of Depth (VxD)
12.00 3.0:1 3.0:1 3.4 2.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/ Freeboard
Design Discharge: 32.17 cfs
Filename: TR -117 Post Mining 10 YR 24 HR.sc4 Printed 11-10-2017