Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
National Exams — May 2016 — 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, USCS classification, seepage/flow nets, consolidation and bearing-capacity chapters; Craig & Knappett, Craig's Soil Mechanics (8th ed.) — cross-reference for seepage and flow-net theory; Freeze & Cherry, Groundwater (1979) — Darcy's law, the Dupuit–Thiem equation for an unconfined well, and wellhead time-of-travel capture zones.
