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
o—inhl loan .AM7 0-1. 1 C,h,, —h
NC3
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Width (ft) Sideslope Sideslope Slope ( %)
ft Depth % of Depth Mult. x
p ()
Ratio Ratio
(VxD)
5.00 2.0:1 2.0:1 4.5
0.03
Riprap Channel Results:
PADER Method - Steep Slope Design
•
Structure #3 (R/prap Channel)
NU
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
106.18 cfs
Depth:
1.66 ft 1.69 ft
Top Width:
11.63 ft 11.75 ft
Velocity:
7.70 fps
X- Sectlon Area:
13.78 sq ft
Hydraulic Radius:
1.110 ft
Froude Number:
1.25
Manning's n:
0.0440
Dmin:
3.00 In
050:
6.00 in
Dmax:
9.00 in
Structure #3 (R/prap Channel)
NU
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %j
Width (ft) Ratio Ratio
Mult. x
Depth (ft) % of Depth
Depth:
(VxD)
5.00 2.0:1 2.0:1 3.7
0.30
Riprap Channel Results:
PADER Method - Steep Slope Design
•
20
Filename: 10 -year Coliom_Pond (With Riser).sc4
Exh. 7- 23A -24
Printed 01 -22 -2009
Revision Date: 12/15/10
Revision No.: PR -03
w/o Freeboard w/ Freeboard
Design Discharge:
124.00 cis
Depth:
1.87 ft 2.17 ft
Top Width:
12.46 ft 13.66 ft
Velocity:
7.61 fps
20
Filename: 10 -year Coliom_Pond (With Riser).sc4
Exh. 7- 23A -24
Printed 01 -22 -2009
Revision Date: 12/15/10
Revision No.: PR -03