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
n,,—i, hi ioaA anin p—i� 1 Crhunh
Structure Detail:
Structure #17 (Riprap Channel)
Ditch D45
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width (ft) Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
3.00 3.0:1 2.0:1 3.2
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Filename: Catchment No.2 100 Year Event- DWDA3.sc4
Printed 04 -09 -2012
TR -65 EXH 19(22) -22 04/17/2012
w/o Freeboard w/ Freeboard
Design Discharge:
7.06 cfs
Depth:
0.46 ft 0.76 ft
Top Width:
Velocity:
X- Section Area:
Hydraulic Radius:
5.28 ft 6.78 ft
3.75 fps
1.88 sq ft
0.345 ft
Froude Number:
1.11
Manning's n:
Dmin:
0.0350
1.00 in
D50:
1.50 in No Riprap required
Dmax:
3.00 in
Filename: Catchment No.2 100 Year Event- DWDA3.sc4
Printed 04 -09 -2012
TR -65 EXH 19(22) -22 04/17/2012