2009-09-21_PERMIT FILE - C1980007A ‎(13)‎

• Permit No: C1980007A
• IBM Index Class Name: Permit File
• Doc Date: 9/21/2009
• Doc Name: 100-Year Surface Water Control Plan
• Section_Exhibit Name: Exhibit 66 DCW-5, CCW-5
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
r'-, i hf 1008 _OM7 D-1 1 Crhu,of.
6

Structure Detail:
Structure #1 (Erodible Channel)
DCW-5
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)
2.0:1 2.0:1 1.0 0.0300 0.30 4.0
Erodible Channel Results:

w/o Freeboard w/ Freeboard
Design Discharge: 1.10 cfs
Depth: 0.53 ft 0.83 ft
Top Width: 2.14 ft 3.34 ft
Velocity: 1.91 fps
X-Section Area: 0.57 sq ft
Hydraulic Radius: 0.239 ft
Froude Number: 0.65
Structure #Z Culvert)
CCW-5
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater Loss Coef.
(ft) (ft) (Ke)
80.00 1.00 0.0240 1.50 0.00 0.9c
Design Discharge = 0.92 cfs
Minimum pipe diameter: 1 - 10 inch pipe(s) required
r?
Filename: DCW-5,CCW-5.sc4
Printed 08-11-2009