Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
National Exams — Dec. 2019 — 17-Ind-B5 Ergonomics. Three-hour, open-book exam (all notes, books and any non-communicating calculator permitted); Part A (Questions 1–2) is mandatory and Part B (Questions 3–4) asks the candidate to choose one. All four questions are solved below for completeness.
Reference texts: Sanders & McCormick, Human Factors in Engineering and Design (7th ed.) — displays/controls design, human perceptual and cognitive systems, environmental ergonomics, human-factors measurement methods; Waters, Putz-Anderson & Garg, NIOSH Applications Manual for the Revised NIOSH Lifting Equation (1994) — the RWL/LI formula and multiplier tables reproduced on the exam's own Appendix 1 (pages 7–8); NIOSH Elements of Ergonomics Programs (1997) and CSA Z1004 (Canada) — MSD-prevention programs; CSA Z1002 — hazard identification and risk assessment.
