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18-Env-A3 Geotechnical and Hydrogeological Engineering: December 2018

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

  1. Question 1 Soil Sample Phase Relationships
  2. Question 2 Earthwork Hauling and Dam Weight
  3. Question 3 Seepage Through a Zoned Earth Dam
  4. Question 4 Discharge and Tracer Travel Time, Unconfined Well
  5. Question 5 Falling-Head Permeameter Test
  6. Question 6 Landfill Leachate Collection Through a Clay Liner

Start with Question 1 →

National Exams — December 2018 — 18-Env-A3 / Geotechnical & Hydrogeological Engineering. 3 hours duration; open book exam, any non-communicating calculator permitted. FIVE (5) questions constitute a complete exam paper (the first five as they appear in the answer book are marked, 20 marks each, 100 marks total); all six printed questions are solved below for completeness.

Reference texts. Braja M. Das, Principles of Geotechnical Engineering (9th ed.) — compaction, permeability and seepage, weight–volume relations; Craig & Knappett, Craig's Soil Mechanics (8th ed.) — flow nets and composite seepage barriers; Freeze & Cherry, Groundwater (1979) — Darcy's law, the Dupuit–Thiem equation and seepage velocity.