2008-12-11_PERMIT FILE - C1980007A ‎(32)‎

• 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 SG-1 Pond
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
r.+...,rL.l+? ?OOA _9 nn0 oomde ? Cr4....e1+
Structure #23 [Erodible Channel)
DSL Y-6
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
Left Right I Freeboard Freeboard Freeboard Limiting
Sideslope Sideslope Slope (%) Manning's n Depth (ft) % of Mult. X Velocity
Ratio Ratio Depth (VxD) (fps)
1.0:1 3.0:1 8.7 0.03001 0.30 5.5
Erodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 5.17 cfs
Depth: 0.64 ft 0.94 ft
Top Width: 2.55 ft 3.75 ft
Velocity: 6.35 fps
X-Section Area: 0.81 sq ft
Hydraulic Radius: 0.285 ft
Froude Number: 1.98
Structure #19 (Culvert)
CSL Y-7
Culvert Inputs:
Culvert Results:
Max. Tailwater Entrance
Length (ft) Slope (%) Manning's n Headwater (ft) Loss Coef.
(ft) (Ke)
59.00 5.00 0.0240 3.00 0.00 0.90
Design Discharge = 5.17 cfs
Minimum pipe diameter: 1 - 15 inch pipe(s) required
Structure #18 (Erodible Channel)
DSL Y-21
Triangular Erodible Channel Inputs:
Material: Graded silts to cobbles when colloidal
•
59
Filename: SG-1.sc4 Printed 10-28-2008