2012-02-03_PERMIT FILE - C1981012

• Permit No: C1981012
• IBM Index Class Name: Permit File
• Doc Date: 2/3/2012
• Doc Name: DEVELOPMENT WASTE DISPOSAL AREA
• Section_Exhibit Name: Exhibit 39 Development Waste Disposal Area Stormwater Calculation Summary
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
r­ ­W,+ t °°a -'?Ain D„ 10 I Ghu.oh
Structure Detail;
Structure #1 (Erodible Channel
Ditch D -12
Trapezoidal Erodible Channel Inputs:
Material: Alluvial silts colloidal
Bottom = left Right_
Width (ft) _ Sideslope = Sideslope Slope ( %)= Manning s n
Freeboard Freeboard. Freeboard =
_- _
Umitng
: VeloGty(fps)
Ratio - RatJo._ —_ =
Depth (ft) % of Depth_ Mult:'x (VxD)
Top Width:
3.00 1.0:1 1.0:1 1.0 0.0250
0.30
5.0
Erodible Channel Results:
Freeboard
Design Discharge:
8.75 cfs
Depth:
0.65 ft 0.95 ft
Top Width:
4.30 ft 4.90 ft
Velocity:
-
3.70 fps
X- Section Area:
2.36 sq ft
Hydraulic Radius:
0.489 IT
Froude Number:
0.88
Filename: Ditches 1214-100 Year.sc4
Printed 10 -10 -2011
TR -60 Exh. 39 -16 10/11