2008-12-11_PERMIT FILE - C1980007A ‎(31)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 100 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 RPE Pond
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
Structure Detail:
Structure #7 jErodible 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: 15.34 cfs
Depth: 1.24 ft 1.54 ft
Top Width: 4.97 ft 6.17 ft
Velocity: 4.98 fps
X-Section Area: 3.08 sq ft
Hydraulic Radius: 0.555 ft
Froude Number: 1.11
Structure #8 6R1"rap 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: 15.34 cfs
Depth: 0.92 ft 1.22 ft
Top Width: 3.69 ft 4.89 ft
Velocity: 9.01 fps
X-Section Area: 1.70 sq ft
Hydraulic Radius: 0.412 ft
9
Filename: RPE(expanded).sc4 Printed 10-23-2008