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

•
SEDCAD 4 for Windows
r--WO 4004 _'1M7 V.-I. 1 Qlhl --h
Structure #22 (Riprap Channel)
RD4
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
w/o Freeboard w/ Freeboard
Froude Number:
1.95
Manning's n:
0.0490
Dmin:
5.00 in
D50:
9.00 In
Dmax:
12.00 in
Structure #22 (Riprap Channel)
RD4
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Freeboard Freeboard Freeboard
m Sideslope Sideslope Slope (%)
Mult. x
Width
Ratio Ratio
Depth (ft) % of Depth
(VxD)
5.00 2.0:1 2.0:1 5.4
0.30
•
Riprap Channel Results:
PARER Method - Steep Slope Design
Structure #21 (Erodible Channell
D10
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
•
Filename: 10 -year Collom_Pond (With Rlser).sc4
Exh. 7- 23A -35
31
Printed 01 -22 -2009
Revision Date: 12/15/10
Revision No.: PR -03
M
w/o Freeboard w/ Freeboard
Design Discharge:
351.13 cis
Depth:
2.94 ft 3.24 ft
Top Width:
16.76 ft 17.96 ft
Velocity:
10.98 fps
X- Sectton Area:
31.97 sq ft
Hydraulic Radius:
1.762 ft
Froude Number:
1.40
Manning's n:
0.0460
Dmin:
5.001n
D50:
9.00 In
Dmax:
12.00 in
Structure #21 (Erodible Channell
D10
Trapezoidal Erodible Channel Inputs:
Material: Cobbles and shingles
•
Filename: 10 -year Collom_Pond (With Rlser).sc4
Exh. 7- 23A -35
31
Printed 01 -22 -2009
Revision Date: 12/15/10
Revision No.: PR -03
M