2008-12-11_PERMIT FILE - C1980007A ‎(28)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2008
• Doc Name: 10 Year, 24 Hour Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 RPE Pond
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
(`nnvrinh} BOak -9f1f)7 0-1. I Gh\./.h
11
•
Max. Entrance
Length (ft) Slope (%) Manning's n Headwater Tailwater Loss Coef.
(ft) (ft) (Ke)
20.00 5.00 0.0240 3.75 0.00 0.91
Culvert Results:
Design Discharge = 7.78 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required
Structure #4 (Erodible Chann
DRPE-1
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 9.0 0.0350 0.30 5.5
Erodible Channel Results:
•
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater ft Loss Coef.
(ft) () (Ke)
20.00 5.00 0.0240 1.50 0.00 0.90
Culvert Results:
Design Discharge = 1.35 cfs
Minimum pipe diameter: 1 - 8 inch pipe(s) required
Structure #2 (lNonerodib/e Channe/)
w/o Freeboard w/ Freeboard
Design Discharge: 1.35 cfs
Depth: 0.41 ft 0.71 ft
Top Width: 1.63 ft 2.83 ft
Velocity: 4.10 fps
X-Section Area: 0.33 sq ft
Hydraulic Radius: 0.182 ft
Froude Number: 1.60
Structure #3 (Culvert)
CRPE-1
Culvert Inputs:
Filename: RPE(expanded).sc4 Printed 10-23-2008