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16-Civ-A1 Elementary Structural Analysis: May 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Classify each structure — unstable / determinate / indeterminate
  2. Question 2 Reactions, shear and bending-moment diagrams
  3. Question 3 Vertical deflection at the overhang tip
  4. Question 4 Truss member forces (method of sections)
  5. Question 5 Influence lines
  6. Question 6 Truss forces and virtual-work deflection
  7. Question 7 Indeterminate frame — moment distribution / slope-deflection
  8. Question 8 Vertical deflection at C (beam propped by a strut)

Start with Question 1 →

Paper: National Exams — May 2017, 16-Civ-A1 Elementary Structural Analysis (closed book, 3 h). Six questions constitute a complete paper: answer Q1–Q5 and one of Q6/Q7/Q8. For completeness all eight questions are worked here.

Reference texts: R.C. Hibbeler, Structural Analysis (10th ed., Pearson) — determinacy (Ch. 2), joints/sections (Ch. 3), shear & moment diagrams (Ch. 4), influence lines (Ch. 6), virtual-work deflections (Ch. 8–9), moment distribution / slope–deflection (Ch. 11–12); A. Kassimali, Structural Analysis (6th ed., Cengage) — internal hinges, compound beams, indeterminate frames.

Sign convention: upward reactions positive; sagging bending moment positive (tension on the underside); member tension positive (T), compression negative (C).

These A1 papers are defined entirely by their figures, so every structure has been read from the printed figure and redrawn to scale below.