2015-09-09_PERMIT FILE - C1981019A ‎(17)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/9/2015
• Doc Name: Section 28 Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part A -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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7
Structure #34 (Riprap Channel)
Trib D
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
13.16 cfs
Depth:
0.10 ft
Top Width:
20.59 ft
Velocity:
6.55 fps
X -Section Area:
2.01 sq ft
Hydraulic Radius:
0.097 ft
Froude Number:
3.70
Structure #34 (Riprap Channel)
Trib D
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
12.00 2.0:1 2.0:1 17.0
0.06 ft
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #33 (Erodible Channel)
Natural chnl from toe disturbed area
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Filename TR -105 Sec28Pond 10024NS sc4 Printed 02-04-2015
Exh. 7-20A-14 Revision Date: 02/15/2015
Revision No.: TR -105
w/o Freeboard w/ Freeboard
Design Discharge:
6.55 cfs
Depth:
0.06 ft
Top Width:
12.24 ft
Velocity*:
X -Section Area:
0.72 sq ft
Hydraulic Radius:
0.059 ft
Froude Number*:
Manning's n*:
Dmin:
2.00 in
D50:
6.00 in
Dmax:
7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #33 (Erodible Channel)
Natural chnl from toe disturbed area
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Filename TR -105 Sec28Pond 10024NS sc4 Printed 02-04-2015
Exh. 7-20A-14 Revision Date: 02/15/2015
Revision No.: TR -105