Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format: National Exams, May 2018 — 07-Str-B2 Management of Construction. Three hours, closed book, one approved Casio or Sharp calculator permitted. Six questions of equal value (20 marks each); any five constitute a complete paper and only the first five that appear in the answer book are marked. All six are worked below so the paper serves as a complete revision set whichever five a candidate elects.
Reference texts: Hegazy, T., Computer-Based Construction Project Management (Prentice Hall) — precedence (activity-on-node) networks with start-to-start lags, forward and backward passes, total and free float, the late bar chart, and contractor cash-flow and overdraft analysis; these chapters carry Questions 1 and 5. Hendrickson, C. & Au, T., Project Management for Construction (2nd ed., Carnegie Mellon) — Chapter 5 (cost estimation and unit-cost data), Chapter 8 (bidding and contract award), Chapter 10 (fundamental scheduling procedures), Chapter 11 (advanced scheduling with lags) and Chapter 12 (cost control and financing of constructed facilities). Halpin, D.W. & Senior, B.A., Construction Management (4th ed., Wiley) — quantity take-off, crew productivity, bidding strategy, bonding and construction safety management. Peurifoy, R.L. & Schexnayder, C.J., Construction Planning, Equipment and Methods (9th ed., McGraw-Hill) — excavation production and the physical determinants of backhoe daily output, behind Question 2. R.S. Means, Building Construction Cost Data (annual) — the anatomy of a unit-price line: crew, daily output, unit, and bare material / labour / equipment / total columns. Sullivan, W.G., Wicks, E.M. & Koelling, C.P., Engineering Economy (17th ed., Pearson) — Chapters 5 and 6, present-worth analysis and the repeatability (least common multiple of lives) assumption for alternatives with unequal lives, used in Question 4. Canadian Construction Documents Committee, CCDC 2 — Stipulated Price Contract (2020), CCDC 220 Bid Bond, CCDC 221 Performance Bond and CCDC 222 Labour and Material Payment Bond, with the BC Builders Lien Act holdback provisions and the Master Municipal Construction Documents (MMCD) — the Canadian tendering and payment machinery behind Questions 3 and 5. WorkSafeBC Occupational Health and Safety Regulation (Parts 8, 11, 12, 13, 18 and 33), CSA Z259 fall-protection and CSA Z94.4 respirator series, and the Transportation Association of Canada Manual of Uniform Traffic Control Devices for Canada — the Canadian rule set behind Question 6.
Check — how the two printed figures on page 2 were read. Network (Question 1): nine activity boxes with seven links — A → D carrying the printed SS = 3 lag (the line leaves A's top-left corner, runs across the top of the sheet and drops into D's top-left corner), then D → H, B → E, B → F, C → G, F → I and G → I, all finish-to-start with zero lag. No further arrows are drawn; A, B and C are the only start activities and E, H and I the only finish activities. Foundation plan (Question 2): an 80 m × 70 m rectangle with a rectangular notch 25 m deep cut into the top edge, one internal trench running the full width 20 m up from the bottom (the 50 m and 20 m dimensions meet on it), and one internal trench dropping from the bottom of the notch to that line. The notch width is not dimensioned on the paper, and Step 1 below shows the total trench length does not depend on it, so nothing is assumed. All plan dimensions are taken as trench centrelines; reading them instead to the outside face of the trench would shorten the total by about 1.6 per cent and change no conclusion.
