2020-03-31_PERMIT FILE - C1981019A ‎(13)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/31/2020
• Doc Name: Prospect Sedimentation Pond
• Type & Sequence: TR136
• Section_Exhibit Name: Exhibit 07 Item 20 Part PP
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
rnnvnnht 1 QQR.2)nin n Pamola I Crhuiah
22
Material: Riprap
Left Right Freeboard
Bottom Freeboard Freeboard
Sideslope Sideslope Slope(%)
Width(ft) Ratio Ratio Depth(ft) %of Depth Mult.x
(VxD)
12.00 2.0:1 2.0:1 16.8 1.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/Freeboard
Design Discharge: 18.12 cfs
Depth: 0.13 ft 1.13 ft
Top Width: 12.53 ft 16.53 ft
Velocity*:
X-Section Area: 1.63 sq ft
Hydraulic Radius: 0.130 ft
Froude Number*:
Manning's n*:
Dmin: 2.00 in
D50: 6.00 in
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #1 (Null)
Subwshd W
Structure #2 (Vegetated Channel)
Hdwtrs N Trib Ditch
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right Freeboard
Bottom g Freeboard Freeboard Limiting
Sideslope Sideslope Slope(%) Retardance
Width (ft) p p Classes % Mult.x j Velocity
Ratio Ratio Depth (ft) of Depth
(VxD) ; (fps)
12.00 3.0:1 3.0:1 6.4 D, B 1.00 6.0
Vegetated Channel Results:
Filename: Prospect Pond 25 Yr 24 Hr Storm Event.sc4 Printed 01-06-2020