Anthropometric Dimensions of Turkish Operators of Loading Tractors Used in Forestry and the Design of the Workplace

Abstract

This study aims to determine the principles of anthropometric location so that loading machine operators in Turkey are able work in a healthier, safer, and more productive environment. For this research, anthropometric data on the operators, measured with the photometric method, were first analyzed using statistical methods and then compared with the results of similar studies carried out in Turkey and other countries throughout the world. Second, the anthropometric compatibility between loading machines and their operators was examined in order to determine the parameters of the tractor control area suitable for Turkish operators. This study used 145 machines and operators working in loading and sorting operations in forest reserves within the Western Black Sea Region. Operators studied had an average stature of 1,744 mm, knee height of 562 mm, sitting height of 886 mm, and buttock to knee length of 597 mm. The most important data for the design, popliteal height, and hip breadth, were, respectively, found to have a 5 percent value of 433 mm and a 95 percent value of 412 mm. Although the results were similar to those of previous studies carried out in Turkey, there were considerable differences in anthropometric values between various nations. The study found that, in the region, the vertical adjustment length of operator seats was +/- 49 mm and the horizontal adjustment length was +/- 39 mm. In selecting loading machines for operator use, attention should be paid to the compatibility of operator control areas with the anthropometric characteristics of operators so that operators can use loading machines in a healthier, safer, and more productive manner. Operator seats already in use should be substituted with ones that are vertically and horizontally adjustable, and that are compatible with operators' anthropometric characteristics.