2013-10-31_REVISION - M1977284 ‎(3)‎

• Permit No: M1977284
• IBM Index Class Name: REVISION
• Doc Date: 10/31/2013
• Doc Name: Drainage Design Plan Mineral Joe Mine
• From: Cotter
• To: DRMS
• Type & Sequence: AM1
• Email Name: TC1
• Email Name: SJM
• Media Type: D
• Archive: No

Mineral Joe Mine — Drainage Design Plan 48
Gradation for Granular Bedding
Size
Percent by Weight Passinq S uare-Mesh Sieves
U.S. Standard
Sieve Size
Type I (CDOT Sect. 703.01)
Type II
CDOT Sect. 703.09 Class A
3 inches
-
90-100
1' /2 inches
-
-
3/4 inch
-
20-90
% inch
100
-
No. 4
95- 100
0-20
No. 16
45-80
-
No. 50
10-30
-
No. 100
2-10
-
No. 200
0 - 2
0 - 3
*D50 = mean particle size
** Mix VL, L and M riprap with 35% topsoil (by volume) and bury it with 4 to 6
inches of topsoil, all vibration compacted, and revegetate
414813.131029 Whetstone Associates •
RipRap Designation
Riprap
% Smaller Than Given
Intermediate
d5o*
Designation
Size By Weight
Rock Dimension
(inches)
(inches)
70-100
12
Type VL
50-70
9
6 **
35 -50
6
2 -10
2
70-100
15
Type L
50-70
12
9 **
35 -50
9
2 -10
3
70- 100
21
Type M
50-70
18
12 **
35-50
12
2 -10
4
70-100
30
Type H
50-70
24
18
35-50
18
2 -10
6
70-100
41
Type VH
50-70
33
24
35-50
24
2 -10
9
*D50 = mean particle size
** Mix VL, L and M riprap with 35% topsoil (by volume) and bury it with 4 to 6
inches of topsoil, all vibration compacted, and revegetate
414813.131029 Whetstone Associates •