2011-06-29_PERMIT FILE - C1981019A ‎(22)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 6/29/2011
• Doc Name: Permanent Channel Design
• Section_Exhibit Name: Exhibit 07 Item 20 Part E -ST
• Media Type: D
• Archive: Yes

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SEDCAD 4 for Windows
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Material: Riprap
Left Right
Bottom
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope ( %)
Width (ft) Ratio Ratio
Mult. x
Depth (ft) % of Depth
Depth:
(VxD)
12.00 3.0:1 3.0:1 15.0
13.45 ft
Riprap Channel Results:
Structure #5 (Pond,
W Tay Stk Pnd 1
Pond Inputs:
Pond Results:
Simons /OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Initial Pool Elev: 100.00 ft
Initial Pool: 2.01 ac -ft
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
100.00 20.00 2.00:1 2.00:1 20.00
Peak Elevation: 100.92 ft
Dewater Time: 0.70 days
Dewatering time is calculated from peak stage to lowest spillway
Filename: W Tay West Trib Ditch 10024.sc4
Printed 12 -27 -2010
Exh. 7- 20E -48 Revision Date: 12/31/10
Revision No.: TR -81
w/o Freeboard w/ Freeboard
Design Discharge:
34.58 cfs
Depth:
0.24 ft
Top Width:
13.45 ft
Velocity*:
X- Section Area:
3.08 sq ft
Hydraulic Radius:
0.227 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.
Initial Pool Elev: 100.00 ft
Initial Pool: 2.01 ac -ft
Emergency Spillway
Spillway Elev Crest Length Left Right Bottom
(ft) Sideslope Sideslope Width (ft)
100.00 20.00 2.00:1 2.00:1 20.00
Peak Elevation: 100.92 ft
Dewater Time: 0.70 days
Dewatering time is calculated from peak stage to lowest spillway
Filename: W Tay West Trib Ditch 10024.sc4
Printed 12 -27 -2010
Exh. 7- 20E -48 Revision Date: 12/31/10
Revision No.: TR -81