NivaarExam PrepOfficial exam papers ↗

18-Env-A3 Geotechnical and Hydrogeological Engineering: December 2017

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

  1. Question 1 Soil Phase Relationships
  2. Question 2 Earthwork — Hauling and Compaction-Water Trucking
  3. Question 3 Seepage Beneath an Earth Dam with a Partial-Penetration Cutoff Wall
  4. Question 4 Confined Aquifer Pump Test — Hydraulic Conductivity and Tracer Travel Time
  5. Question 5 Primary Consolidation of an Overconsolidated Clay
  6. Question 6 Falling-Head Permeability Test

Start with Question 1 →

National Exams — December 2017 — 04-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.) — weight–volume relations, compaction, seepage/flow nets, and consolidation chapters; Craig & Knappett, Craig's Soil Mechanics (8th ed.) — cross-reference for flow-net theory and finite-difference seepage; Freeze & Cherry, Groundwater (1979) — Darcy's law, the Thiem confined-flow equation, and radial travel time.