Studies on Tanzanian forest work.
Four teams of two workers were time-studied in clearcutting of a cypress plantation and three teams in sulky skidding. The heart rate was recorded every 30 s. The average heartrate in timber cutting was 117.5 ± 13.4 P/min, and it was mainly dependent on workerâs working capacity. Average work load...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Finnish Society of Forest Science
1987-01-01
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| Series: | Silva Fennica |
| Online Access: | https://www.silvafennica.fi/article/5314 |
| _version_ | 1828436195705618432 |
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| author | Saarilahti, M. Bakena, E. Mboya, G. Minja, T. Ngerageze, T. Ntahompagaze, J. |
| author_facet | Saarilahti, M. Bakena, E. Mboya, G. Minja, T. Ngerageze, T. Ntahompagaze, J. |
| author_sort | Saarilahti, M. |
| collection | DOAJ |
| description | Four teams of two workers were time-studied in clearcutting of a cypress plantation and three teams in sulky skidding. The heart rate was recorded every 30 s. The average heartrate in timber cutting was 117.5 ± 13.4 P/min, and it was mainly dependent on workerâs working capacity. Average work load index was 41 ± 3% when working at 97% performance. The production rate was then 2.5 m/h (crew). In sulky skidding the heart rate was lower, 106 ± 1.1 P/min, as well as the work load (WLI 30 ± 1%) and performance rating (87%). The low production rate (1.1 m/h) (crew)) over 45 m distance is mainly due to under-dimensioned load size. The energy expenditure in timber cutting was 21.4 kJ/min and in sulky skidding 16.3 kJ/min. Daily energy expenditure was 15.0 MJ/d, and most of the timber cutters belonged to the class âexceptionally activeâ.33 |
| first_indexed | 2024-12-10T19:22:41Z |
| format | Article |
| id | doaj.art-fbd593b6d1d14d87be0cc5a9a4100bd7 |
| institution | Directory Open Access Journal |
| issn | 2242-4075 |
| language | English |
| last_indexed | 2024-12-10T19:22:41Z |
| publishDate | 1987-01-01 |
| publisher | Finnish Society of Forest Science |
| record_format | Article |
| series | Silva Fennica |
| spelling | doaj.art-fbd593b6d1d14d87be0cc5a9a4100bd72022-12-22T01:36:27ZengFinnish Society of Forest ScienceSilva Fennica2242-40751987-01-0121210.14214/sf.a15471Studies on Tanzanian forest work.Saarilahti, M.Bakena, E.Mboya, G.Minja, T.Ngerageze, T.Ntahompagaze, J.Four teams of two workers were time-studied in clearcutting of a cypress plantation and three teams in sulky skidding. The heart rate was recorded every 30 s. The average heartrate in timber cutting was 117.5 ± 13.4 P/min, and it was mainly dependent on workerâs working capacity. Average work load index was 41 ± 3% when working at 97% performance. The production rate was then 2.5 m/h (crew). In sulky skidding the heart rate was lower, 106 ± 1.1 P/min, as well as the work load (WLI 30 ± 1%) and performance rating (87%). The low production rate (1.1 m/h) (crew)) over 45 m distance is mainly due to under-dimensioned load size. The energy expenditure in timber cutting was 21.4 kJ/min and in sulky skidding 16.3 kJ/min. Daily energy expenditure was 15.0 MJ/d, and most of the timber cutters belonged to the class âexceptionally activeâ.33https://www.silvafennica.fi/article/5314 |
| spellingShingle | Saarilahti, M. Bakena, E. Mboya, G. Minja, T. Ngerageze, T. Ntahompagaze, J. Studies on Tanzanian forest work. Silva Fennica |
| title | Studies on Tanzanian forest work. |
| title_full | Studies on Tanzanian forest work. |
| title_fullStr | Studies on Tanzanian forest work. |
| title_full_unstemmed | Studies on Tanzanian forest work. |
| title_short | Studies on Tanzanian forest work. |
| title_sort | studies on tanzanian forest work |
| url | https://www.silvafennica.fi/article/5314 |
| work_keys_str_mv | AT saarilahtim studiesontanzanianforestwork AT bakenae studiesontanzanianforestwork AT mboyag studiesontanzanianforestwork AT minjat studiesontanzanianforestwork AT ngeragezet studiesontanzanianforestwork AT ntahompagazej studiesontanzanianforestwork |