Design of Ergonomic Chairs for Railroads Installation Workers

Abstract

The train is a transportation that has the advantage in facilitating the movement of goods or people and masse and environmentally friendly. During 2010-2018 has been carried out the construction of new lines including double track, double track railway which some processes done manually by the workforce. Potential hazards that can be experienced by workers one of them is the danger of ignoring ergonomic factors. Ergonomic dangers can occur when the job, body position and working conditions or put a burden on the body that can eventually cause low back pain. Low back pain is associated with the frequent carrying, lifting, and pushing of heavy items and often or long bowing, sitting or standing or other unnatural postures standing for long periods of time and lack of rest. The Research was conducted on railroad installation worker for making ergonomic chair design that accordance with anthropometry of Indonesian. The aim of the research is to design of ergonomics chair that accordance with rail road installation workers, then analyze result of design and making chair for workers. The design and manufacture of chairs are used according to the principles of ergonomics. The method used in this research is Ergonomic Function Deployment. The method in this research is the development of Quality Function of Deployment by adding Ergonomic principle. Ergonomic Function of Deployment, which is by adding new relationship between consumer's desire with questionnaire method for railroad installation workers and ergonomic aspect of product. The new design of chair is by using width of 40.1 cm that accordance with anthropometry dimension of the 95th for hip width of workers. The resulted of the questionnaire, resulted 53.33% of railroad installation workers have experience lower back pain when working without chair. By using a new design of chair, the railway worker feels comfortable when seat on the chair during work, as many 56.6% from respondence. Another result, the existence of the chairs increasing 50% work attempt of the worker. The chair is used for rest by workers is 46.6%, design of chair is sturdy seats for workers is 63.3% and workers feel comfortable with a 60% in sitting position with the chair. However, workers still feel the pain in other parts by 60%. for rest 46.6%, sturdy seats for workers 63.3% and workers comfortable with a 60% sitting position.