2012-08-03_PERMIT FILE - C1981012 ‎(2)‎

• Permit No: C1981012
• IBM Index Class Name: Permit File
• Doc Date: 8/3/2012
• Doc Name: West DWDA
• Section_Exhibit Name: Exhibit 19 ‎(22)‎ West DWDA ‎(DWDA #3)‎
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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Structure Detail;
Structure #12 (Riprap Channel)
Ditch D46 (3296)
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right Freeboard Freeboard Freeboard
Width
Bottom
w/o Freeboard w/ Freeboard
(ft) Sideslope Sideslope Slope ( %)
Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
3.00 2.0:1 2.0:1 32.0
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Filename: Catchment No.2 100 Year Event- DWDA3.sc4
TR -65
EXH 19(22) -23
Printed 04 -09 -2012
04/17/2012
w/o Freeboard w/ Freeboard
Design Discharge:
23.21 cfs
Depth:
0.18 ft 1.18 ft
Top Width:
3.70 ft 7.70 ft
Velocity*:
X- Section Area:
0.59 sq ft
Hydraulic Radius:
0.155 ft
Froude Number *:
Manning's n *:
Dmin:
8.00 in
D50:
24.00 in
Dmax:
30.00 in
Velocity and Manning's n calculations may not apply for this method.
Filename: Catchment No.2 100 Year Event- DWDA3.sc4
TR -65
EXH 19(22) -23
Printed 04 -09 -2012
04/17/2012