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
rnnurinhf/QQR-')(11n Pam.la I Crhinmh
31
Sta 34+53 to 27, incl Subwshd N
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right Freeboard Freeboard Freeboard
Width (ft) Sideslope Sideslope Slope(%) Depth(ft) %of Depth Mult.x
Ratio Ratio (VxD)
12.00 2.0:1 2.0:1 10.3 1.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
w/o Freeboard w/Freeboard
Design Discharge: 11.57 cfs
Depth: 0.11 ft 1.11 ft
Top Width: 12.46 ft 16.46 ft
Velocity*:
X-Section Area: 1.40 sq ft
Hydraulic Radius: 0.112 ft
Froude Number*:
Mannings 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 #5(Null)
Subwshd 0 enters
Structure #6(Riprap Channel)
N Trib Ditch Sta 27 to tank NTEP1
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right Freeboard Freeboard Freeboard
Sideslope Sideslope Slope(%)
Width(ft) Ratio Ratio Depth(ft) %of Depth Mult.x
(VxD)
12.00 2.0:1 2.0:1 12.8 1.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
Filename: Prospect Pond 10 Yr 24 Hr Storm Event.sc4 Printed 01-06-2020