23-CS-2 Engineering in Society · December 2014
Question 3 of 7: Hand Tools and Manual Materials Handling Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
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Notes on this paper
National Exams — December 2014 — 11-CS-2 Engineering in Society: Health and Safety. Closed book; approved calculator permitted. Any five of the seven questions constitute a complete paper; all questions are of equal value. Answers are written in point form but fully, as instructed. Complete answers to all seven questions follow.
Question 3: Hand Tools and Manual Materials Handling (20 marks: 7/6/7)
Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.
(i) Controlling Hand-Tool Hazards
Right tool for the job ; use tools only as intended.
Inspect and maintain — keep tools in good condition (sharp, no cracked handles, mushroomed heads); remove defective tools from service.
Ergonomic design — proper handle size/shape for neutral wrist posture; insulated handles for electrical work.
Safe use practices — cut away from the body, secure workpieces, proper stance.
Guards on tools where applicable; carry/store safely (sheaths, belts).
PPE — eye protection, gloves; training in correct use.
(ii) Factors Contributing to Manual-Handling Injuries / Low-Back Pain
Load — heavy, bulky, awkward or unstable loads; poor grip.
Posture/technique — bending, twisting, reaching, stooping; lifting from floor or above shoulders.
Task — repetition, long duration, high frequency, carrying distance, insufficient recovery.
Force — pushing/pulling, jerking.
Environment — restricted space, poor footing, obstacles, poor lighting, heat.
Individual — physical capacity, fatigue, prior injury, lack of training.
(iii) Recommended Lifting Procedures
Size up the load; get help or a mechanical aid if too heavy/awkward; plan the route.
Stand close to the load, feet apart for a stable base.
Bend the knees, keep the back straight ; get a firm grip.
Lift smoothly with the leg muscles, keeping the load close to the body.
Do not twist —turn the feet to change direction.
Keep the load between shoulder and knuckle height where possible; set it down using the legs, back straight.
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