2013-10-30_REVISION - M1977310 ‎(3)‎

• Permit No: M1977310
• IBM Index Class Name: REVISION
• Doc Date: 10/30/2013
• Doc Name: DRAINAGE DESIGN PLAN FOR THE JD6 MINE
• From: COTTER
• To: DRMS
• Type & Sequence: AM1
• Email Name: TC1
• Email Name: SJM
• Media Type: D
• Archive: No

JD -6 Mine — Drainage Design Plan 48
Gradation for Granular Bedding
Size
Percent by Weight Passing 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' /z 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
RipRap Designation
Riprap
% Smaller Than Given
Intermediate
d50*
Designation
Size By Weight
Rock Dimension
(inches)
70-100
41
(inches)
33 24
35-50
70-100
12
9
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
4148A.131028 Whetstone Associates •