2010-12-17_REVISION - C1981019 ‎(122)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 12/17/2010
• Doc Name: Exhibit 7 Item 23 Erosion and Sedimentation Control Plan
• Type & Sequence: PR3
• Email Name: JRS
• Media Type: D
• Archive: No

10
SEDCAD 4 for Windows
(`.v.vrinh4 4°°11 _7nm Oamele 1 Q. .-h
37
PADER Method - Steep Slope Design
LJ
Structure #1101 "rap Channel)
RD1
Trapezoidal Riprap Channel Inputs:
Material: RiprN
Left Right
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
27.24 cfs
Depth:
0.66 ft 0.96 ft
Top Width:
7.62 ft 8.82 ft
Velocity:
6.58 fps
X- Section Area:
4.14 sq ft
Hydraulic Radius:
0.522 it
Froude Number:
1.57
Manning's n:
0.0420
Dmin:
3.00 In
D50:
6.00 in
Dmax:
9.00 in
LJ
Structure #1101 "rap Channel)
RD1
Trapezoidal Riprap Channel Inputs:
Material: RiprN
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sldeslope Slope ( %)
Width (ft) Ratio Ratio
D Mult. x
epth (ft) % of Depth (VxD)
5.00 2.0:1 2.0:1 3.2
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
Structure # 10 Pond
LCX -IN
Filename: 10 -year Collom Pond nth Riser).sc4
Exh. 7- 23A -41
Printed 01 -22 -2009
Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
528.04 cfs
Depth:
3.94 ft 4.24 ft
Top Width:
20.78 ft 21.98 ft
Velocity:
10.39 fps
X- Section Area:
50.83 sq ft
Hydraulic Radius:
2.245 ft
Froude Number:
1.17
Manning's n:
0.0440
Dmin:
5.00 In
D50:
9.00 in
Dmax:
12.00 in
Structure # 10 Pond
LCX -IN
Filename: 10 -year Collom Pond nth Riser).sc4
Exh. 7- 23A -41
Printed 01 -22 -2009
Revision Date: 12/15/10
Revision No.: PR -03