2015-09-09_PERMIT FILE - C1981019A ‎(10)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 9/9/2015
• Doc Name: West Taylor Sedimentation Pond
• Section_Exhibit Name: Exhibit 07 Item 20 Part C -ST
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
11
Simons/OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #14 (Null
Null
Structure #13 (Vegetated Channel)
East Trib Reach 2 at Sta16
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right Retardance
Bottom
w/o Freeboard w/ Freeboard
Design Discharge:
33.87 cfs
Depth:
0.35 ft
Top Width:
14.11 ft
Velocity*:
Top Width:
X -Section Area:
4.60 sq ft
Hydraulic Radius:
0.323 ft
Froude Number*:
X -Section Area:
Manning's n*:
24.10 sq ft
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 #14 (Null
Null
Structure #13 (Vegetated Channel)
East Trib Reach 2 at Sta16
Trapezoidal Vegetated Channel Inputs:
Material: Smooth brome
Left Right Retardance
Bottom
Freeboard Freeboard Freeboard
Limiting
Width ft Sideslope Sideslope Slope (%) Classes
( ) Ratio Ratio
°
Depth (ft) /o of Depth Mult. x (VxD)
Velocity
(fps)
20.00 3.0:1 3.0:1 1.8 D, B
7.0
Vegetated Channel Results:
Structure #12 (Pond)
WT Stockpond 2
Filename: TR -105r WTayPond PMT 10 24.sc4 Printed 06-18-2015
Exh. 7-20C-44 Revision Date: 06/18/2015
Revision No.: TR -105
Stability Stability
Class D w/o Class D w/
Freeboard Freeboard
Capacity Capacity
Class B w/o Class B w/
Freeboard Freeboard
Design Discharge:
33.87 cfs
33.87 cfs
Depth:
0.60 ft
1.04 ft
Top Width:
23.62 ft
26.25 ft
Velocity:
2.57 fps
1.41 fps
X -Section Area:
13.17 sq ft
24.10 sq ft
Hydraulic Radius:
0.553 ft
0.906 ft
Froude Number:
0.61
0.26
Roughness Coefficient:
0.0524
0.1331
Structure #12 (Pond)
WT Stockpond 2
Filename: TR -105r WTayPond PMT 10 24.sc4 Printed 06-18-2015
Exh. 7-20C-44 Revision Date: 06/18/2015
Revision No.: TR -105