2016-08-08_PERMIT FILE - C1981019A ‎(117)‎

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 8/8/2016
• Doc Name: Collom Post Mine Channel Design
• Section_Exhibit Name: Volume 18 Exhibit 7 Item 25
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
1 ono onI n 0-1, 1
Structure Detail;
Structure #6 (Riprap Channel)
Little Collom Reconstructed Reach 1
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
12.00 3.0:1 3.0:1 5.5
1.00
Riprap Channel Results:
Simons/OSM Method - Steep Slope Design
Velocity and Manning's n calculations may not apply for this method.
Structure #7 (Riprap Channel)
Little Collom Reconstructed Reach 2
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
w/o Freeboard w/ Freeboard
Design Discharge:
172.11 cfs
Depth:
1.07 ft 2.07 ft
Top Width:
18.40 ft 24.40 ft
Velocity*:
X -Section Area:
16.21 sq ft
Hydraulic Radius:
0.865 ft
Froude Number*:
Manning's n*:
Dmin:
4.00 in
D50:
12.00 in
Dmax:
15.00 in
Velocity and Manning's n calculations may not apply for this method.
Structure #7 (Riprap Channel)
Little Collom Reconstructed Reach 2
Trapezoidal Riprap Channel Inputs:
Material: Riprap
Bottom Left Right
Freeboard Freeboard Freeboard
Sideslope Sideslope Slope (%)
Width (ft) Ratio Ratio
Depth (ft) % of Depth Mult. x (VxD)
20.00 3.0:1 3.0:1 5.5
Riprap Channel Results:
PADER Method - Steep Slope Design
61
Filename: PR04 LCRC Reach2 10024 revl .sc4 Printed 07-30-2015
Exh. 7-25-21 Revision Date: 7/31/2015
Revision No.: PR -04