Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
National Exams — Dec. 2018 — 17-Ind-B5 Ergonomics. Three-hour, open-book exam (any non-communicating calculator permitted); NIOSH lifting tables (Appendix 1) and a manual-materials-handling assist-device table (Appendix 2) are supplied on the exam's own pages. The paper's instructions state a total of four questions: Part A (Questions 1–2) is mandatory, Part B asks the candidate to choose one of Questions 3 or 4. All four questions are solved below.
Reference texts: Sanders & McCormick, Human Factors in Engineering and Design (7th ed.) — environmental ergonomics, human-factors analysis methods, error taxonomy (Reason's model), and controls/displays population-stereotype/spatial-compatibility principles (incl. the classic Chapanis & Lindenbaum stove-burner control-panel study); 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; NIOSH, Elements of Ergonomics Programs (1997) and CSA Z1004 (Canada) — workplace musculoskeletal-disorder (MSD) prevention programs; CSA Z1002 — hazard identification, elimination and risk assessment.
