2020-03-31_PERMIT FILE - C1981019A ‎(12)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/31/2020
• Doc Name: Spoil Pile Collector Ditches
• Type & Sequence: TR136
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 23 Part B
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detail:
Structure #11 (Riprap Channel)
D2 Ditch
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Bottom Sideslope Sideslope Slope(%)
Width(ft) Ratio Ratio Depth (ft) %of Depth Mult.x
(VxD)
12.00 2.0:1 2.0:1 4.9
Riprap Channel Results:
PADER Method - Steep Slope Design
w/o Freeboard w/Freeboard
Design Discharge: 10.52 cfs
Depth: 0.26 ft
Top Width: 13.02 ft
Velocity: 3.29 fps
X-Section Area: 3.19 sq ft
Hydraulic Radius: 0.243 ft
Froude Number: 1.17
Manning's n: 0.0390
Dmin: 1.00 in
D50: 1.50 in
Dmax: 3.00 in
Structure #8(Vegetated Channel)
D6 Ditch
Trapezoidal Vegetated Channel Inputs:
Material: Kentucky bluegrass
Bottom Left Right Retardance Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope(%) Mult. x Velocity
Width (ft) Ratio Ratio Classes Depth(ft) %of Depth
(VxD) (fps)
20.00 2.0:1 2.0:1 5.9 D, B 6.0
Vegetated Channel Results:
Filename:West Side Temp Spoil Pile 10 Yr 24 Hr.sc4 Printed 12-31-2019