2008-12-11_PERMIT FILE - C1980007A ‎(29)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 25 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 RPE Pond
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Structure Detail:
Structure #7 (Erodible Channel)
DRPE-3
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) (fps)
2.0:1 2.0:1 3.0 0.0350 0.30 5.5
Erodible Channel Results:

w/o Freeboard w/ Freeboard
Design Discharge: 9.37 cfs
Depth: 1.03 ft 1.33 ft
Top Width: 4.13 ft 5.33 ft
Velocity: 4.40 fps
X-Section Area: 2.13 sq ft
Hydraulic Radius: 0.461 ft
Froude Number: 1.08
Structure #8 (Riprap Channel)
DRPE-3A
Triangular Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%) Mult. x
Ratio Ratio Depth (ft) % of
Depth (VxD)
2.0:1 2.0:1 31.0 0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
w/o Freeboard w/ Freeboard
Design Discharge: 9.37 cfs
Depth: 0.78 ft 1.08 ft
Top Width: 3.13 ft 4.33 ft
Velocity: 7.63 fps
Filename: RPE(expanded).sc4 Printed 10-23-2008