Time study on skidding in conventional timber harvesting
|
No. of |
Volume |
Skidding |
Time required for |
Total | ||||
No. |
logs |
of load |
distance |
winching |
skidding |
time | ||
(m3) |
(m) |
Distance (m) |
Time required (minutes) |
Empty travel (minutes) |
Loaded travel (minutes) |
(minutes) | ||
1. |
61/10 |
10.7850 |
109.9 |
5.0 |
5.96 |
6.97 |
3.52 |
93.20 |
2. |
137/10 |
2.3383 |
139.5 |
2.0 |
1.25 |
6.08 |
3.30 |
11.57 |
3. |
112/10 |
1.7017 |
169.0 |
2.0 |
1.05 |
5.00 |
6.50 |
13.38 |
4. |
20/8 |
1.6555 |
228.2 |
2.0 |
0.68 |
7.25 |
4.55 |
13.68 |
5. |
137/7 |
3.9222 |
258.8 |
4.0 |
1.97 |
5.46 |
5.10 |
13.55 |
6. |
99/7 |
2.7620 |
278.8 |
1.5 |
1.05 |
10.58 |
5.56 |
18.54 |
7. |
84/7 |
3.0978 |
336.2 |
1.5 |
1.20 |
25.70 |
10.55 |
38.88 |
8. |
100/7 |
4.3329 |
303.0 |
2.5 |
3.23 |
7.73 |
12.21 |
45.14 |
9. |
80/5 |
1.6222 |
392.0 |
2.0 |
0.72 |
10.00 |
6.50 |
18.06 |
10. |
47/3 |
2.9688 |
264.8 |
4.0 |
1.95 |
10.13 |
11.00 |
39.34 |
11. |
49/3 |
5.5413 |
297.2 |
2.0 |
1.43 |
6.76 |
7.43 |
16.69 |
12. |
76/1 |
2.0198 |
411.9 |
3.5 |
1.77 |
48.67 |
7.18 |
73.81 |
13. |
108/2 |
2.3768 |
480.5 |
3.0 |
1.05 |
15.63 |
7.58 |
25.54 |
14. |
70/1 |
4.8908 |
282.0 |
5.0 |
1.77 |
16.05 |
8.17 |
27.31 |
15. |
80/3 |
9.1025 |
317.4 |
11.5 |
20.70 |
26.13 |
15.07 |
95.88 |
16. |
183/6 |
2.2554 |
351.5 |
2.0 |
1.53 |
35.10 |
6.12 |
97.70 |
17. |
249/4 |
3.4875 |
416.9 |
3.5 |
1.82 |
20.05 |
6.38 |
29.36 |
18. |
262/4 |
4.2735 |
401.1 |
13.0 |
4.30 |
8.80 |
14.07 |
29.00 |
19. |
221/4 |
2.4946 |
460.4 |
2.0 |
1.76 |
9.02 |
6.72 |
19.09 |
20. |
179/4 |
2.6253 |
492.6 |
2.2 |
1.10 |
10.43 |
7.31 |
20.07 |
21. |
155/4 |
2.9732 |
460.4 |
6.0 |
1.53 |
7.55 |
8.50 |
18.68 |
22. |
141/3 |
12.9278 |
210.1 |
10.5 |
3.78 |
23.07 |
13.03 |
43.68 |
23. |
213/2 |
8.1937 |
256.0 |
1.0 |
0.87 |
14.65 |
12.96 |
29.75 |
24. |
133/2 |
3.6908 |
618.1 |
1.5 |
0.97 |
22.68 |
11.30 |
56.82 |
25. |
143/2 |
5.4041 |
268.0 |
4.5 |
2.82 |
18.62 |
11.06 |
33.48 |
26. |
223/2 |
5.1579 |
531.0 |
3.0 |
2.92 |
12.58 |
7.03 |
52.72 |
381/2 |
||||||||
27. |
122/3 |
2.7986 |
529.8 |
4.5 |
1.92 |
22.65 |
11.81 |
38.58 |
28. |
351/4 |
5.4151 |
507.3 |
1.5 |
0.38 |
25.45 |
14.88 |
45.67 |
29. |
179/6 |
2.9228 |
601.5 |
5.0 |
5.40 |
31.82 |
6.78 |
60.90 |
30. |
77/6 |
1.9786 |
412.8 |
5.5 |
6.36 |
26.17 |
7.43 |
41.58 |
31. |
105/6 |
6.5551 |
309.1 |
8.5 |
12.02 |
10.80 |
7.02 |
31.19 |
32. |
83/8 |
1.8447 |
276.2 |
5.5 |
3.85 |
13.65 |
10.68 |
32.41 |
33. |
165/5 |
3.8888 |
449.9 |
5.0 |
13.13 |
22.72 |
12.16 |
49.36 |
34. |
45/9 |
4.1843 |
135.8 |
3.0 |
2.88 |
11.37 |
5.08 |
33.15 |
35. |
14/1 |
1.8149 |
312.5 |
2.0 |
1.25 |
16.57 |
8.25 |
27.10 |
Total |
144.0043 |
12.270.2 |
141.2 |
116.37 |
571.89 |
303.79 |
1,334.86 | |
Average |
4.1144 |
350.6 |
4.0 |
3.32 |
16.34 |
8.68 |
38.14 | |
