2015-09-09_PERMIT FILE - C1981019A ‎(17)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/9/2015
• 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
!`nnvnnM 1000 Onln D-1, I Q,. --K
0
Velocity and Manning's n calculations may not apply for this method.
Structure #37 (Null
Jct Sec 29 Collection Ditch w natrl chnl
Structure #36 (Erodible Channel)
W branch natural undis stream
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Bottom Left Right
w/o Freeboard w/ Freeboard
Froude Number*:
Width (ft) Sideslope Sideslope Slope (%) Manning's n
Manning's n*:
Velocity
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 #37 (Null
Jct Sec 29 Collection Ditch w natrl chnl
Structure #36 (Erodible Channel)
W branch natural undis stream
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Bottom Left Right
Freeboard Freeboard Freeboard
Limiting
Width (ft) Sideslope Sideslope Slope (%) Manning's n
Depth:
Velocity
Ratio Ratio
Depth (
p (ft) % of Depth Mult. x VxD)
(fps)
20.00 3.0:1 3.0:1 27.7 0.0250
X -Section Area:
6.0
Erodible Channel Results:
Structure #35 (Erodible Channel)
Sou branch northern undisturbed
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Bottom Left Right
Sideslope Sideslope Slope (%) Manning's n
w/o Freeboard w/ Freeboard
Design Discharge:
30.75 cfs
Depth:
0.16 ft
Top Width:
20.98 ft
Velocity:
9.20 fps
X -Section Area:
3.34 sq ft
Hydraulic Radius:
0.159 ft
Froude Number:
4.06
Structure #35 (Erodible Channel)
Sou branch northern undisturbed
Trapezoidal Erodible Channel Inputs:
Material: Shales and hardpans
Bottom Left Right
Sideslope Sideslope Slope (%) Manning's n
Freeboard Freeboard Freeboard
Limiting
Velocity
Width (ft) Ratio Ratio
: Depth (ft) % of Depth Mult. x (VxD)
(fps)
20.00 3.0:1 3.0:1 27.0 0.02501
6.0
Erodible Channel Results:
Filename TR -105 Sec28Pond 10024NS sc4 Printed 02-04-2015
Exh. 7-20A-13 Revision Date: 02/15/2015
Revision No.: TR -105