2010-12-17_REVISION - C1981019 ‎(128)‎

• Permit No: C1981019
• IBM Index Class Name: REVISION
• Doc Date: 12/17/2010
• Doc Name: Exhibit 7 Item 23 Erosion and Sedimentation Part 2
• Type & Sequence: PR3
• Email Name: JRS
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
r ,M, hf 9QOR ann7 P-1. I R,h.wh
21
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope ( %) Manning's n
Width (ft)
Mult. x
Depth (ft) % of Depth
Velocity
(fps)
Ratio Ratio
(VxD)
Velocity:
5.00 2.0:1 2.0:1 4.3 0.0350
0.30
5.5
Erodible Channel Results:
Structure #5 (Ripra,�Channel)
NC3a
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
W/o Freeboard w/ Freeboard
Design Discharge:
93.48 cis
Depth:
1.39 ft 1.69 ft
Top Width:
10.57 ft 11.77 ft
Velocity:
8.62 fps
X- Section Area:
10.84 sq ft
Hydraulic Radius:
0.966 ft
Froude Number:
1.50
Structure #5 (Ripra,�Channel)
NC3a
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio
Mult x
Depth (ft) % of Depth (VxD)
5.00 2.0:1 2.0:1 3.1
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
Filename: 100 -year Collom_Ponds (With Riser).so4 Printed 01 -22 -2009
Exch. 7 -23A -139 Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
194.56 cfs
Depth:
2.39 ft 2.69 ft
Top Width:
14.55 ft 15.75 ft
Velocity:
8.34 fps
X Section Area:
23.33 sq ft
Hydraulic Radius:
1.488 ft
Froude Number:
1.16
Manning's n:
0.0410
Dmin:
3.00 in
D50:
6.00 in
Dmax:
9.00 in
•
Filename: 100 -year Collom_Ponds (With Riser).so4 Printed 01 -22 -2009
Exch. 7 -23A -139 Revision Date: 12/15/10
Revision No.: PR -03