2008-12-11_PERMIT FILE - C1980007A ‎(20)‎

• 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 C2-16
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
rnn-; Kf loop-9nn7 P-1. I Gh,.,oh
6
•
Structure Detail.,
Structure #69 (Erodible Channel)
D2-6B
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
Left Right Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Mult. x Velocity
Ratio Ratio Depth (ft) % of Depth (VxD) (fps)
1.0:1 2.0:1 12.5 0.0300 0.30 5.5
Erodible Channel Results:
•
w/o Freeboard w/ Freeboard
Design Discharge: 0.03 cfs
Depth: 0.08 ft 0.38 ft
Top Width: 0.25 ft 1.15 ft
Velocity: 1.88 fps
X-Section Area: 0.01 sq ft
Hydraulic Radius: 0.035 ft
Froude Number: 1.61
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater Loss Coef.
(ft) (ft) (Ke)
30.00 5.00 0.0240 1.50 0.00 0.9(
Structure #68 (Cu/vent)
C2-16
Culvert Inputs:
Culvert Results:
Design Discharge = 0.03 cfs
Minimum pipe diameter: 1 - 2 inch pipe(s) required

Filename: C2-16.sc4 Printed 10-21-2008