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Analysis of Weight Distribution in Terms of Forces and Torques during Lifting Weight Using Digital Human Modelling

Zafar Ullah and Shahid Maqsood

Construction activities performed by workers are usually repetitive and physically demanding. Execution of such tasks in awkward postures can strain the body parts and can result in fatigue, back pain or in severe cases permanent disabilities. In view of this Digital human modelling (DHM) technology offers human ergonomics experts the facilities of an efficient means of kinematics characteristics of lifting heavy weights in different postures. The objective of this paper is to analyse and calculate the forces and torques on the different body parts during lifting weights in four different postures using Digital Human Modelling software. For this purposes four different lifting postures were analysed and the forces and torques were calculated. It was identified that changing the postures considerably minimize the redundant stresses on the body muscles.