Transporting briquette bricks by hand involves repetitive lifting where each brick typically weighs 2–4 kg. When several are carried together, the load may exceed 15 kg, producing significant pressure on muscles and joints. According to biomechanics, improper lifting angles can multiply spinal force by 3×, raising injury risk. Efficient handling requires bending knees, keeping the back straight, and maintaining load close to the body, ensuring safer weight distribution and reduced energy expenditure.
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