2009-09-04_PERMIT FILE - C1982056 ‎(4)‎

• Permit No: C1982056
• IBM Index Class Name: Permit File
• Doc Date: 9/4/2009
• Doc Name: MAIN NORTH INTAKE SHAFT
• Section_Exhibit Name: Exhibit 08X 6-ain North Intake Shaft Drainage Designs
• Media Type: D
• Archive: No

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Structure Detail;
Structure #Z (Erodible Channel
Perimeter Drainage Ditch Z
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope ( %) Manning's n
Mult. x
Velocity
Ratio Ratio
Depth (ft) % of Depth (VxD)
(fps)
3.0:1 3.0:1 6.6 0.03501
0.30
1 5.0
Erodible Channel Results:
•
Structure #1 (Erodible Chant
Perimeter Drainage Ditch 1
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
Dep th:
- - - --
Top Width:
0.37 cfs
0.22 ft 0.52 ft
- --------------------- - - - - --
1.34 ft 3.14 ft
Velocity:
_- - - - - -- 2 .45 fps -- - -_ - --
X- Section Area:
0.1 sq ft
Hydraulic R adius
Froude Number:
0.106 ft
1.29
Structure #1 (Erodible Chant
Perimeter Drainage Ditch 1
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
Freeboard Freeboard Freeboard
Limiting
Sideslope Sideslope Slope ( %) Manning's n
Mult. x
Velocity
Ratio Ratio
Depth (ft) % of Depth (VxD)
(fps)
3.0:1 3.0:1 6.8 0.0350
0.30
5.0
Erodible Channel Results:
Filename: 10 yr 24 hr Perimeter Drainage Ditches.sc4 Printed 04 -24 -2009
w/o Freeboard w/ Freeboard
Design Discharge:
4. 82 cis
Depth:
0.5 ft 0. 88 ft
Top Width
3.50 ft 5.30 ft
Veloci
4.71 fp
X- Section Area:
1.02 sq ft
Hy draulic Radi
Froude Number:
0.277 ft
1.54
Filename: 10 yr 24 hr Perimeter Drainage Ditches.sc4 Printed 04 -24 -2009