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22-Agric-A2 Soil Physics and Mechanics: December 2013

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

  1. Question 1 Dewatering a Trench with a Line of Sand-Point Wells
  2. Question 2 Density, Porosity and Void Ratio of an Undisturbed Soil Cylinder
  3. Question 3 Short Answers — Foundation Failure, Shear Strength, and Preload Fill
  4. Question 4 Constant-Head Permeameter Test on the Soil Cylinder
  5. Question 5 Double-Ring Infiltrometer — Horton's Infiltration Model
  6. Question 6 Standard Proctor Compaction — Zero-Air-Voids Line and Air Content
  7. Question 7 Effective Stress Beneath a Sand-and-Clay Site, Before and After Construction

Start with Question 1 →

Paper format. 04-Agric-A2 Soil Physics & Mechanics, National Exams December 2013 — a three-hour open-book examination; any non-communicating calculator is permitted. The cover page states that five (5) questions constitute a complete exam paper and that only the first five as they appear in the answer book are marked, that each question is of equal value, and that some questions require a written answer whose clarity and organization matter for marks. All seven printed questions are worked here, because the set is a study resource rather than a timed attempt; on exam day a candidate submits only the first five, in order.

Reference texts. B.M. Das, Principles of Geotechnical Engineering, 9th ed. (weight-volume relationships, permeability, effective stress, compaction); R.F. Craig, Craig's Soil Mechanics, 9th ed. (seepage, effective stress, shear strength, consolidation); G.O. Schwab et al., Soil and Water Conservation Engineering, 5th ed. (drainage, infiltration, dewatering design); USDA NRCS National Engineering Handbook (field methods for hydraulic conductivity and infiltration).