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

SEDCAD 4 for Windows
r,— ,rinhf 1ooA _9nin P—i. i
17
w/o Freeboard w/ Freeboard
Dmax: 7.50 in
Velocity and Manning's n calculations may not apply for this method.
Structure #20 (Null
Undlst above Null 14 ovrland
Structure #19 (Null
Hdwtr Trlb 8, TS and seeded
Structure #18 (Riprap Channel
Trlb 8, reclaimed 1 -2 yrs
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width ( ft ) Ratio Ratio
Mult. x
Depth (ft) % of Depth
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 #17 (Riprap Channel
Trib 8, reclaimed 3 yrs
Filename: Sec 28 1024.sc4 Printed 12 -08 -2010
Exh. 7- 20A -21 Revision Date: 12/31/10
Revision No.: TR -81
w/o Freeboard w/ Freeboard
Design Discharge:
5.12 cfs
Depth:
0.03 ft 1.03 ft
Top Width:
12.13 ft 16.13 ft
Velocity*:
X- Section Area:
0.38 sq ft
Hydraulic Radius:
0.031 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 #17 (Riprap Channel
Trib 8, reclaimed 3 yrs
Filename: Sec 28 1024.sc4 Printed 12 -08 -2010
Exh. 7- 20A -21 Revision Date: 12/31/10
Revision No.: TR -81