Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
EGBC / Engineers Canada National Examination — Structural Engineering (legacy), 07-Str-A3 Geotechnical Materials and Analysis, December 2013. Three hours; closed book; one Casio or Sharp approved calculator; drawing instruments required; all required charts and equations are supplied at the back of the paper (Fadum influence chart, Newmark chart with $I_N = 0.005$, and a two-page formula sheet). Total value 100 marks over six compulsory questions (20 + 10 + 10 + 20 + 20 + 20). Every question and every sub-part is solved in full below.
Reference texts: Das, Principles of Geotechnical Engineering, 9th ed. (Ch. 3 weight–volume relationships, Ch. 6 compaction, Ch. 7 permeability, Ch. 8 seepage, Ch. 9 in-situ stresses, Ch. 10 stresses in a soil mass, Ch. 11 consolidation, Ch. 12 shear strength); Knappett & Craig, Craig’s Soil Mechanics, 8th ed. (Ch. 3 effective stress and artesian profiles, Ch. 5 shear strength and stress-path plots); Holtz, Kovacs & Sheahan, An Introduction to Geotechnical Engineering, 2nd ed. (compacted-fill fabric); Canadian Geotechnical Society, Canadian Foundation Engineering Manual (CFEM), 4th ed. — the governing Canadian practice document for settlement, excavation heave and factors of safety; ASTM D698 / D1557 (Proctor compaction), ASTM D7181 (consolidated-drained triaxial).
Check — two printing slips in the source, carried as stated. (a) The Question 1 header reads “(4 × 5 = 20 marks)” but five statements (i)–(v) are printed; the solution treats the question as 5 × 4 = 20 marks and answers all five. (b) Question 5 is valued at 20 marks while its printed sub-part marks are 5 + 7 + 7 = 19; the missing mark is assumed to sit with part (a), and all three parts are answered in full. Neither slip changes any calculation.
