Felling cycle and time spent in felling operations in conventional and
reduced impact timber harvesting
|
Mean time (minutes) required in felling method | |||||
|
No. |
Work elements |
Conventional |
Reduced impact | ||
|
Minutes |
% |
Minutes |
% | ||
|
1. |
Preparation |
0.95 |
5.60 |
1.29 |
7.17 |
|
2. |
Walking to next tree |
3.99 |
23.50 |
3.67 |
20.30 |
|
3. |
Felling preparation (clearing of underbrush and deciding felling direction) |
2.18 |
12.80 |
2.31 |
12.80 |
|
4. |
Felling |
2.96 |
17.40 |
3.58 |
19.80 |
|
5. |
Waiting for tree to fall |
1.65 |
9.73 |
2.45 |
13.60 |
|
6. |
Cross-cutting of logs (bucking) |
3.57 |
21.00 |
3.06 |
17.00 |
|
7. |
Filling up fuel |
0.14 |
0.83 |
0.22 |
1.22 |
|
8. |
Sharpening of chain |
0.99 |
5.83 |
1.20 |
6.67 |
|
9. |
Delays |
0.52 |
3.07 |
0.22 |
1.22 |
|
Total |
16.95 |
100.00 |
18.00 |
100.00 | |
|
Volume (m3/tree) |
4.00 |
3.69 | |||
