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Ergonomics in material handling refers to the scientific study of designing tasks, equipment, and work environments to fit the capabilities and limitations of workers, thereby reducing the risk of injury and improving efficiency. In the construction industry, material handling is a frequent and essential activity involving lifting, carrying, pushing, pulling, and moving materials manually or with mechanical aids. Poor ergonomic practices in such activities can lead to musculoskeletal disorders, fatigue, and accidents, which not only affect worker health but also reduce productivity and increase costs. The application of ergonomics in material handling aims to minimize physical strain by adapting the job to the worker rather than forcing the worker to adapt to the job. This involves analyzing the weight, size, shape, and frequency of handling materials, as well as the posture and movements required during the task. For instance, repetitive bending, twisting, or lifting heavy loads above shoulder level can cause significant stress on the spine and muscles. Ergonomic principles recommend keeping loads close to the body, maintaining neutral body postures, and reducing repetitive motions wherever possible. In construction sites, materials such as bricks, cement bags, steel rods, and tools are often handled manually due to the dynamic and complex nature of the work environment. _________ _________ __________ _______ ________ _______ __________ ______ _____.
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