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

SEDCAD 4 for Windows
r'.— ,ri.,hr I ooa _qnm 93 1 c,M,.,.h
5
•
Structure Detail;
Structure #2 (Erodible Charm %�
Perimeter Drainage Ditch 2
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right
I 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
5.0
Erodible Channel Results:
r
U
Structure #1 (Erodible Channel
Perimeter Drainage Ditch 1
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right Freeboard
9 Freeboard Freeboard
w/o Freeboard w/ Freeboard
Design Discharge:
- -- -- - -- -- --- --------------
Depth:
- - - --
0.47 cfs
- - - - -- - ------------------- - - - - --
0.25 ft 0.55 ft
Top Width:
- - - — 1.47 ft 3.27 ft
Velocity
2 .61 fps
X- Section Area:
0.1 sq ft
Hy draulic Radius:
0.116 ft
Froude Number:
1.31
Structure #1 (Erodible Channel
Perimeter Drainage Ditch 1
Triangular Erodible Channel Inputs:
Material: Cobbles and shingles
Left Right Freeboard
9 Freeboard Freeboard
Limiting
9
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 i 0.30
5.0
Erodible Channel Results:
•
Filename: 25 yr 24 hr—Erodible Perimeter Drainage Ditches with Erodible Spillway Channel.sc4 Printed 04 -24 -2009
w/o Freeboard w/ Freeboard
Design Discharge:
6.52 cfs
Depth:
- - - - -- - Top
0.65 ft 0.95 ft
- --
Width:
3.92 ft 5.72 ft
Velocity:
5.09 fps
X- Sec tion Area:
1.28 sq ft
Hydraulic Radius:
0.310 ft
Filename: 25 yr 24 hr—Erodible Perimeter Drainage Ditches with Erodible Spillway Channel.sc4 Printed 04 -24 -2009