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<p>Manual brick transport remains essential at inaccessible and hilly construction sites, where conventional carrying methods are inefficient and ergonomically hazardous. This study presents the design, fabrication, and field evaluation of a Shoulder–Hand–Head Supported Brick Picker intended to improve carrying capacity, stability, and worker comfort. The device integrates an adjustable stainless-steel frame, X-shaped flexible chain links, load-containment gates, and padded support straps to distribute load across the hands, shoulders, and head. Field trials were conducted with 15 construction workers across three terrain conditions: flat ground (0–2°), moderate slope (8–12°), and steep slope (16–20°). Each participant performed three repetitions over a 50&#xa0;m transport distance using manual carrying, brick tongs, and the proposed device, yielding 405 observations. The proposed system increased carrying capacity to 30–50 bricks per trip, representing a 3–5-fold improvement over conventional approaches. The time required to transport 50 bricks was reduced by approximately 50–60%, while peak heart rate decreased by 12–15% and perceived fatigue by 35–40%. The device also improved load stability and prevented slip or load-shift events during testing. These findings demonstrate that the proposed system is an ergonomic, efficient, and practical solution for manual brick transport in difficult terrain.</p>

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Development of a terrain-adaptive brick transport system using shoulder, head, and hand load distribution

  • 期刊论文

  • 发表日期：

    2026年7月29日

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  • Manpreet Singh,
  • Manish Kumar Singla,
  • Wulfran Fendzi Mbasso

摘要

Manual brick transport remains essential at inaccessible and hilly construction sites, where conventional carrying methods are inefficient and ergonomically hazardous. This study presents the design, fabrication, and field evaluation of a Shoulder–Hand–Head Supported Brick Picker intended to improve carrying capacity, stability, and worker comfort. The device integrates an adjustable stainless-steel frame, X-shaped flexible chain links, load-containment gates, and padded support straps to distribute load across the hands, shoulders, and head. Field trials were conducted with 15 construction workers across three terrain conditions: flat ground (0–2°), moderate slope (8–12°), and steep slope (16–20°). Each participant performed three repetitions over a 50 m transport distance using manual carrying, brick tongs, and the proposed device, yielding 405 observations. The proposed system increased carrying capacity to 30–50 bricks per trip, representing a 3–5-fold improvement over conventional approaches. The time required to transport 50 bricks was reduced by approximately 50–60%, while peak heart rate decreased by 12–15% and perceived fatigue by 35–40%. The device also improved load stability and prevented slip or load-shift events during testing. These findings demonstrate that the proposed system is an ergonomic, efficient, and practical solution for manual brick transport in difficult terrain.