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Issue 11 (1) 2012 pp. 15-26

Włodzimierz Stempski

Poznań University of Life Sciences

ANALYSIS OF TIMBER HARVESTING PROCESS BY MEANS OF THE LONG-TIMBER METHOD IN THE TECHNOLOGICAL VARIANT WITH MEASUREMENTS OF THE LENGTH AND DIAMETER OF LOGS BY THE CHAINSAW OPERATOR

Keywords: wood harvesting, chainsaw, long timber, measurement of boles
Abstract:

 

Investigations were carried out in a pine stand 80 years of age, 24 cm average diameter of breast height and 22 m tall. Both long-timber and medium-length assortments 1.8 and 2.4 m long were harvested. The performed analyses comprised: mean duration times at individual activities during operating time, structure of the operation time, as well as labour consumption during this time. The impact of the length and diameter of the harvested long timber on the above-mentioned characteristics of the harvesting process was assessed. Measurements of operation times were taken with the assistance of a stopwatch using the method of continuous timekeeping. Times of the following operations were identified and measured: site preparation, felling, fastening of the self wind-up measuring tape, cutting logs into assortments, measurement, returning to the end of the handled bole, cutting into rollers, walking over to the next tree to be felled. The obtained results of the investigations revealed statistically significant differences of mean duration times and mean shares of some operations in groups of trees of differing length and diameters. In the structure of the operating time, the highest shares were recorded for roller cutting and measurements. It was found that the diameter of the handled long timber exerted the strongest influence on the labour consumption of the harvested timber.

 

pub/.pdf Full text available in english in Adobe Acrobat format:
http://www.forestry.actapol.net/pub/2_1_2012.pdf

For citation:

MLA Stempski, Włodzimierz. "Analysis of timber harvesting process by means of the long-timber method in the technological variant with measurements of the length and diameter of logs by the chainsaw operator." Acta Sci.Pol. Silv. 11.1 (2012): 15-26.
APA Stempski W. (2012). Analysis of timber harvesting process by means of the long-timber method in the technological variant with measurements of the length and diameter of logs by the chainsaw operator. Acta Sci.Pol. Silv. 11 (1), 15-26
ISO 690 STEMPSKI, Włodzimierz. Analysis of timber harvesting process by means of the long-timber method in the technological variant with measurements of the length and diameter of logs by the chainsaw operator. Acta Sci.Pol. Silv., 2012, 11.1: 15-26.
Streszczenie w języku polskim:
http://www.forestry.actapol.net/tom11/zeszyt1/streszczenie-2.html