Ergonomic On-Site Tool for Women Masons and Helpers — reducing back strain passively, affordably, and sustainably.
A passive biomechanical support system designed for the construction site.
Women construction workers frequently perform bending and lifting tasks such as carrying bricks and mixing mortar, leading to lower back pain and muscle fatigue.
Completely passive — no batteries, no motors, no sensors.
Women are a major part of the construction workforce, yet are chronically underserved by ergonomic tools.
Mixing mortar, carrying bricks, cleaning sites — all involve repeated high-load bending and lifting motions.
Suffer from chronic lower back pain due to sustained mechanical load on the spine.
Lower back muscle strain · Reduced muscle endurance · Poor forward posture · Muscle fatigue · Spinal load
A biomechanical support system targeting back muscles under high load during daily construction tasks.
Targets back muscles directly to reduce spinal stress during forward bending and lifting cycles.
Provides controlled resistance while bending forward and release assistance during upward motion.
Pre-tensioned elastic elements store energy during bending and release it during lifting — no power needed.
Inspired by human-assisted weightlifting — now mechanical and wearable.
Three design iterations from concept to refined prototype.
Results from on-site worker trials and ergonomic assessments.
"It feels like someone is holding my back when I lift. I feel less tired at end of day."
Covers mixing mortar, loading/unloading, carrying materials, and all bending & lifting activities common to construction sites.
Technically passive, economically accessible, and socially scalable.
Validated metrics from prototype tests.
Built from waste, designed to last.
Uses waste plastic, old fabrics, and repurposed elastic materials — turning industrial scrap into a life-improving device.
Simple components can be fixed or replaced by workers themselves — no specialist needed.
All materials are available at local hardware shops. Any community can build this without a factory.
No electrical components, no imported parts, handmade production keeps the carbon footprint near zero.
Photos from design, testing, and on-site usage. Add your images below.
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The minds behind FlexOppor.
Department of Civil Engineering
Providing expert guidance throughout the project's design,
testing, and documentation phases.