Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Paper format: National Exams, May 2017 — 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 answered in the answer book are marked. All six are worked below so the paper can be used for revision whichever five a candidate chooses.
Reference texts: Hegazy, T., Computer-Based Construction Project Management (Prentice Hall) — activity-on-arrow networks, event-time calculations, time–cost trade-off and least-cost crashing, project cash flow and overdraft financing, and labour productivity; these chapters cover Questions 1, 3 and 5. Hendrickson, C. & Au, T., Project Management for Construction (2nd ed., Carnegie Mellon) — Chapter 10 (fundamental scheduling procedures), Chapter 11 (advanced scheduling techniques) and Chapter 12 (cost control, monitoring and accounting), including the S-curve and the financing of construction operations. Halpin, D.W. & Senior, B.A., Construction Management (4th ed., Wiley) — construction financing and the interest cost of a negative cash position, labour productivity and motivation, and construction safety management. Sullivan, W.G., Wicks, E.M. & Koelling, C.P., Engineering Economy (17th ed., Pearson) — Chapters 5 and 6, present-worth analysis and the repeatability (common multiple of lives) assumption for alternatives with unequal lives, used in Question 4. Peurifoy, R.L. & Schexnayder, C.J., Construction Planning, Equipment and Methods (9th ed., McGraw-Hill) — site layout and the physical determinants of crew output. AACE International, Recommended Practice 29R-03, Forensic Schedule Analysis, and the Society of Construction Law, Delay and Disruption Protocol (2nd ed., 2017) — the delay-analysis taxonomy required by Question 2. Canadian Construction Documents Committee, CCDC 2 — Stipulated Price Contract (2020), CCDC 40 — Rules for Mediation and Arbitration and CCDC 220/221/222 bond forms — the Canadian contractual machinery for notice, claims and dispute resolution. Transportation Association of Canada, Manual of Uniform Traffic Control Devices for Canada (MUTCDC), and the BC Ministry of Transportation and Infrastructure Traffic Management Manual for Work on Roadways, together with WorkSafeBC's Occupational Health and Safety Regulation (Part 18 Traffic Control, Part 4 lighting and workplace conditions, Part 8 personal protective clothing) — the Canadian rule set behind Question 6.
Question 1 (network). The node numbers, the activity letters and the i–j pairs printed in the data table agree completely with the drawn arrows: solid arrows run 1→2, 1→3, 1→4, 2→3, 2→6, 3→5, 3→6, 4→5 and 5→6, and one dashed arrow runs 2→5. The dashed arrow carries no letter in the table, so it is the network's dummy activity with zero duration and zero cost. Every arrowhead was checked individually at 8× magnification.
Question 5(b) (cash-flow chart). The values below are read from the printed chart. The smooth curve (cash out) reads 4.0, 11.5, 15.5, 45.0, 54.0, 71.5 and 71.5 thousand at the ends of months 1 to 7; the staircase (payment received) rises at the end of months 2 to 7 to 4.0, 12.5, 16.5, 47.5, 57.5 and 80.0 thousand. Both series are read to the nearest $500, which is the resolution the printed chart supports and is consistent with the word “estimate” in the question.
