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

:7
SEDCAD 4 for Windows
i Q, K, -K
14
Trib C, reclaimed 3 yr
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width (ft)
Mult. x
Ratio Ratio
Depth (ft) % of Depth (VxD)
12.00 2.0:1 2.0:1 25.0
1.00
Riprap Channel Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #10 [Null)
Mine tie in to undist middle leg
Structure #9 Nonerodible Channel)
Middle leg undisturbed
Triangular Nonerodible Channel Inputs:
Material: Bare rock
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
16.33 cfs
Depth:
0.09 ft 1.09 ft
Top Width:
12.35 ft 16.35 ft
Velocity *:
X- Section Area:
1,06 sq ft
Hydraulic Radius:
0.086 ft
Froude Number *:
Manning's n *:
Dmin:
3.00 in
D50:
9.00 in
Dmax:
11.25 in
Velocity and Manning's n calculations may not apply for this method.
Structure #10 [Null)
Mine tie in to undist middle leg
Structure #9 Nonerodible Channel)
Middle leg undisturbed
Triangular Nonerodible Channel Inputs:
Material: Bare rock
Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %) Manning's n
Mult. x
Ratio Ratio
Depth (ft) % of Depth (VxD)
1.0:1 1.0:1 25.0 0.0350
Nonerodible Channel Results:
w/o Freeboard w/ Freeboard
Design Discharge: 18.40 cfs
Depth: 1.23 ft
Filename: Sec 28 100 24.sc4 Printed 12 -08 -2010
Exh. 7- 20A -53 Revision Date: 12/31/10
Revision No.: TR -81