Angle of repose
|
|
Unit weight (kg/m3) |
Angle of repose, f |
||
|
Material |
Min |
Max |
Min |
Max |
|
Ashes |
6.3 |
7.9 |
|
40 ° |
|
Cement |
|
14.1 |
|
20 ° |
|
Cement (clinker) |
|
14.1 |
|
30 ° |
|
Chalk (in lumps) |
11.0 |
12.6 |
35 ° |
45 ° |
|
Clay (in lumps) |
|
11.0 |
|
30 ° |
|
Clay (dry) |
18.8 |
22.0 |
|
30 ° |
|
Clay (moist) |
20.4 |
25.1 |
|
45 ° |
|
Clay (wet) |
20.4 |
25.1 |
|
15 ° |
|
Clinker |
|
10.2 |
|
40 ° |
|
Coal (in lumps) |
|
8.8 |
|
35 ° |
|
Coke |
|
5.5 |
|
30 ° |
|
Copper ore |
25.1 |
28.3 |
|
35 ° |
|
Crushed brick |
12.6 |
15.7 |
35 ° |
40 ° |
|
Crushed stone |
17.3 |
20.4 |
35 ° |
40 ° |
|
Granite |
17.3 |
31.0 |
35 ° |
40 ° |
|
Gravel (clean) |
14.1 |
17.3 |
35 ° |
40 ° |
|
Gravel (with sand) |
15.7 |
17.3 |
25 ° |
30 ° |
|
Hematite iron ore |
|
36.1 |
|
35 ° |
|
Lead ore |
|
50.2 |
|
35 ° |
|
Limestones |
12.6 |
18.8 |
35 ° |
45 ° |
|
Magnetite iron ore |
|
39.3 |
|
35 ° |
|
Mangenese ore |
25.1 |
28.3 |
|
35 ° |
|
Mud |
16.5 |
18.8 |
|
0 ° |
|
Rubblestone |
17.3 |
18.8 |
|
45 ° |
|
Salt |
|
9.4 |
|
30 ° |
|
Sand (dry) |
15.7 |
18.8 |
30 ° |
35 ° |
|
Sand (moist) |
18.1 |
19.6 |
|
35 ° |
|
Sand (wet) |
18.1 |
20.4 |
|
25 ° |
|
Sandstones |
12.6 |
18.8 |
35 ° |
45 ° |
|
Shale |
14.1 |
18.8 |
30 ° |
35 ° |
|
Shingle |
14.1 |
17.3 |
30 ° |
40 ° |
|
Slag |
|
14.1 |
|
35 ° |
|
Vegetable earth (dry) |
14.1 |
15.7 |
|
30 ° |
|
Vegetable earth (moist) |
15.7 |
17.3 |
45 ° |
50 ° |
|
Vegetable earth (wet) |
17.3 |
18.8 |
|
15 ° |
|
Zinc ore |
25.1 |
28.3 |
|
35 ° |