2011-06-29_PERMIT FILE - C1981019A ‎(20)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: Section 28 Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part A -ST
• Media Type: D
• Archive: Yes

1
SEDCAD 4 for Windows
Structure #26 (Null
OVlnd Sec 29 ditch to Trib A
Structure #25 (Riprap Channe/)
Trib A upper in TS seeded
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
38.18 cfs
Depth:
2.60 ft 3.60 ft
Top Width:
22.38 ft 26.38 ft
Velocity:
0.86 fps
X- Section Area:
44.62 sq ft
Hydraulic Radius:
1.890 ft
Froude Number:
0.11
Manning's n:
0.0377
Dmin:
2.00 in
D50:
9.00 in
Dmax:
12.00 in
Structure #26 (Null
OVlnd Sec 29 ditch to Trib A
Structure #25 (Riprap Channe/)
Trib A upper in TS seeded
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
a Sideslo a Slope Width (ft) Sideslo p p ( )
Depth (ft) of Depth Mult. x
Ratio Ratio
(VxD)
12.00 2.0:1 2.0:1 16.0
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
0
W
Filename: Sec 28 100 24.sc4 Printed 12 -08 -2010
Exh. 7- 20A -47 Revision Date: 12/31/10
Revision No.: TR -81
w/o Freeboard w/ Freeboard
Design Discharge:
11.64 cfs
Depth:
0.10 ft 1.10 ft
Top Width:
12.38 ft 16.38 ft
Velocity*:
X- Section Area:
1.17 sq ft
Hydraulic Radius:
0.094 ft
Froude Number *:
Manning's n *:
Dmin:
2.00 in
D50:
Dmax:
6.00 in
7.50 in
Velocity and Manning's n calculations may not apply for this method.
0
W
Filename: Sec 28 100 24.sc4 Printed 12 -08 -2010
Exh. 7- 20A -47 Revision Date: 12/31/10
Revision No.: TR -81