Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format. Professional Engineers Ontario / Engineers Canada National Examinations, May 2014 — 98-Civ-B3 Geotechnical Design. Three hours, OPEN BOOK, non-communicating calculator. Section A carries five discussion questions of 7 marks each (answer any four); Section B carries four design questions of 24 marks each (answer any three); the examinable total is 4 × 7 + 3 × 24 = 100 marks. All nine questions are worked below, because the set is a study resource rather than a timed attempt.
Reference texts (16-Civ-B3 / 98-Civ-B3 Geotechnical Design).
Sources of charts and assumed values (page-1 Note 6). Note 6 of this paper requires the candidate to identify the source of every design chart and every assumed value. The values imported into the solutions below are, in full: bearing-capacity factors Nc = 5.7 (Terzaghi strip, phi = 0) and 5.14 (Meyerhof / Prandtl, phi = 0), Das Foundation Engineering Table 3.1 and Eq. 3.19; shape and depth factors from De Beer and Hansen as tabulated in Das Table 3.4; the adhesion factor alpha = 0.45 for bored piles in stiff clay, Skempton (1959) as reproduced in CFEM Ch. 18; the end-bearing coefficient Nc* = 9 for piles in clay, Skempton (1951); the compression index correlation Cc = 0.009(LL − 10), Terzaghi and Peck (1967); and a specific gravity Gs = 2.70 where a void ratio had to be back-figured. Each is repeated at the point of use.
