Dumping of Charcoal from Haiti Biomass Cook Stove
Dumping of Charcoal from Haiti Biomass Cook Stove
The Task � A 20 lb Stove must be lifted: � Base hand = 27 in. � Top hand = 8 in. � Base hand must be brought 19 in above top hand to ensure complete dumping of all coals � Handles 16 in. diagonally apart 41 in 16 in 14 in 24 in 32 in
Assumptions � Handles must be used to lift and tip stove because of stove’s temperature � Task to be performed by mostly young to middle age females � Weight of stove evenly balanced between both hands � No wrist deviation
Initial Posture 95% Male Strength % Capable of Hip L 4/L 5 Compression 95% Female Strength % Capable of Hip L 4/L 5 Compression 57% 798. 9 lbs 81% 872. 9 lbs
Final Posture 95% Male Strength % Capable of Hip L 4/L 5 Compression 95% Female Strength % Capable of Hip L 4/L 5 Compression 95% 329. 1 lbs 96% 387. 6 lbs
Conclusions � Initial Posture � Lifting of stove requires subject to bend significantly � Overall limiting Joint: � Hip due to bending � Recommendations � Raise stove to higher point of use � Create new way of disposing of charcoal? Strength % Capable of Hip L 4/L 5 Compression 95% Male 95% Female 81% 57% 872. 9 lbs 798. 9 lbs
New Task Design �Place removable container in combustion chamber that is easy to remove �Reduce need to lift entire stove to dump charcoal �Allow user to bend less because of higher placement
Questions
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