Chapter 6 Quiz — Risk Management
Twenty-two questions. Answer each one before opening the explanation. A scoring guide is at the end.
Multiple Choice
1. Which of the following is a properly formed risk, as the chapter defines it?
- (a) "Labor market conditions."
- (b) "The tower crane will be on site for eleven months at $340,000."
- (c) "Halcyon Electric's manning falls more than 15% below the manpower curve for two consecutive weeks, costing $175,000 and 8 CD."
- (d) "The architect might be slow."
Answer
(c). It is an uncertain event, it has an observable moment, and it carries a cost and a duration. (a) and (d) are anxieties, not events. (b) is certain, so it is scope, not risk — it belongs in the estimate at full value.
2. A geotechnical report has thin coverage on half the site. Kestrel spends $34,000 on eight additional borings and four test pits before setting the GMP. Which response is that?
- (a) Transfer
- (b) Avoid
- (c) Mitigate
- (d) Accept
Answer
(c) Mitigate. The drilling does not stop bad soil from existing and it does not move the exposure to anyone else. It converts an unbounded unknown into a bounded, priceable quantity — reducing both probability and impact of the risk by turning part of it into scope.
3. Under a standard American form of contract, who normally owns the cost of unusually severe weather, and who normally owns the time?
- (a) Cost to the owner, time to the contractor
- (b) Cost to the contractor, time granted by the owner
- (c) Both to the owner
- (d) Both to the contractor
Answer
(b). Weather is typically excusable but non-compensable: the contractor gets a time extension so liquidated damages do not run, and eats its own extended costs. This is why "adverse weather beyond the anticipated days" belongs on a cost register even though the schedule relief is automatic.
4. Northgate's construction contingency is $1,320,000 against a base of $43,800,000. What percentage is that, and what is the number's chief weakness?
- (a) 3.01% — its weakness is that it is too small for a healthcare project
- (b) 3.01% — its weakness is that it says nothing about what the money is for
- (c) 2.78% — its weakness is that it excludes the fee
- (d) 3.01% — it has no weakness; percentage methods are the industry standard
Answer
(b). $1,320,000 ÷ $43,800,000 = 3.01%. A top-down percentage is fast and defensible in a boardroom and completely uninformative: because no dollar traces to a named risk, it can never tell you whether the amount remaining is enough for the work remaining.
5. Two rows on your register: X-1 is 45% × $180,000 and X-2 is 8% × $1,000,000. Which statement is correct?
- (a) Their expected values differ by more than 20%, so X-1 is clearly the priority
- (b) Their expected values are nearly identical, so they should be managed the same way
- (c) Their expected values are nearly identical, but they require different responses because one costs you a bad quarter and the other a bad year
- (d) X-2 should be removed because 8% is below the threshold for a register
Answer
(c). X-1 EMV = $81,000; X-2 EMV = $80,000. Financially identical on paper, and entirely different in life. EMV is a mean and means hide tails. X-2 is a transfer candidate — a bond or a policy — precisely because you cannot absorb it.
6. PERT weighted mean, with optimistic 30, most likely 36, pessimistic 48 work days:
- (a) 36.0 WD
- (b) 37.0 WD
- (c) 38.0 WD
- (d) 40.5 WD
Answer
(b) 37.0 WD. (30 + 4 × 36 + 48) ÷ 6 = (30 + 144 + 48) ÷ 6 = 222 ÷ 6 = 37.0. Note that the expected duration is a full work day longer than the most-likely duration, because the bad tail is longer than the good one.
7. Three parallel paths feed one milestone. Each has an 80% chance of finishing on time and they are independent. What is the probability the milestone starts on time?
- (a) 80%
- (b) 73%
- (c) 51%
- (d) 27%
Answer
(c) about 51%. 0.80 × 0.80 × 0.80 = 0.512. This is merge bias: every feeder looked safe and the merge point is a coin flip. It is the reason a schedule dense with parallel paths is riskier than a schedule with the same number of activities in a line — and the critical-path calculation alone will not show it to you.
8. In a CM at Risk contract with a GMP and a 75/25 savings split, unused construction contingency:
- (a) Becomes contractor profit in full
- (b) Is returned entirely to the owner
- (c) Is shared — 75% to the owner, 25% to the contractor
- (d) Rolls forward into the warranty period
Answer
(c). Because the GMP is a maximum, unspent money does not convert to profit. On Northgate, $970,000 of total savings produced $727,500 to Meridian and $242,500 to Kestrel — a 13.4% bump on Kestrel's $1,804,800 fee.
9. A job is 45% complete and has drawn 63% of its contingency. The burn ratio and the correct action are:
- (a) 0.71 — healthy, no action
- (b) 1.40 — trouble; escalate now, re-price the remaining register, forecast cost-to-complete
- (c) 1.40 — normal for mid-job; revisit at 60%
- (d) 0.63 — watch band; monitor monthly
Answer
(b). 63% ÷ 45% = 1.40, above the 1.3 threshold where the job is eating itself. At this pace the reserve is gone around 71% complete, well before commissioning and closeout risks land. Waiting for the next cycle costs you a reporting period you cannot recover.
10. Which of the following is the only legitimate set of responses to a safety risk?
- (a) Avoid and mitigate
- (b) Transfer and accept
- (c) Mitigate and accept
- (d) All five, applied in proportion to expected value
Answer
(a) Avoid and mitigate. You cannot transfer an injury. Insurance pays medical costs and workers' compensation pays indemnity, and both are necessary — neither makes the injury not have happened. And you cannot accept a safety risk, because acceptance means deciding to let it occur and funding the consequence. The bond does not bring anyone back.
True / False
For each, mark true or false and write the one-line justification.
11. A risk register's purpose is to predict what will go wrong on a project.
Answer
False. Its purpose is to convert arguments you would otherwise have later, expensively and verbally, into decisions made early, cheaply, and in writing — with an owner and a trigger attached to each. A forecast is a by-product, not the point.
12. Money set aside as contingency is money the contractor expects to keep.
Answer
False, and in an open-book contract it is worse than false. Contingency is a funded liability against identified risk. In a GMP it is inside the guaranteed maximum, disclosed to the owner, and subject to a savings split — so money carried there with no risk behind it and no intention of spending it is a misrepresentation, not conservatism.
13. A probability × impact matrix is a reliable way to rank risks for funding decisions.
Answer
False. It multiplies rank labels rather than quantities, compresses ranges, and is blind above its top band. On the Northgate register it ranked R-11 above R-07 while the expected values ranked them the other way. Use it to communicate; use arithmetic to decide.
14. Transferring a risk always costs more than the expected value of the risk.
Answer
False, and the exception is the whole point of allocation. When the transferee genuinely controls the risk it is cheap to them, so they price it below your expected value — a truss supplier accepting a delivery-date liquidated-damages provision for about $9,300 against $21,000 of your expected exposure. Transfer costs more than EMV when you hand a risk to someone who cannot control it.
15. Padding each activity's duration by 10% gives a project the same protection as a single project-level buffer of the same total size.
Answer
False. Distributed padding is consumed silently (a crew given 80 days for 72 days of work takes 80), it destroys the honest critical path so you cannot see what matters, and when a real problem hits one activity the protection is sitting inside all the others. A single visible buffer, drawn down like money, is worth far more than the same days scattered.
Short Answer
16. Distinguish risk, uncertainty, and ignorance, and state the management response to each.
Answer
Risk: you know the event and can put a probability and impact on it — price it, register it, respond to it. Uncertainty: you know the event but cannot honestly put a probability on it — bound it with a range and buy information (a mockup, a trial week, a boring program) to convert it into risk. Ignorance: you do not know the event exists — you cannot register it, so you manage it structurally with checklists built from other people's failures, an outside reviewer, and a contingency loading that assumes the list is incomplete. Northgate's most expensive event, the eleven-day submittal sitting in Kestrel's own office, lived in the third category.
17. Name the five money buckets people call "contingency" and give the one-sentence distinction for each.
Answer
Estimating contingency covers scope you know is coming because the drawings are not finished, and it should shrink as design completes. Construction contingency covers identified execution risk within the contracted scope, and every dollar traces to a register row. Owner's contingency covers scope the owner will add and sits outside the construction contract. Escalation allowance covers price movement in named commodities or trades between GMP and buyout, and nothing else. Management reserve covers unknown-unknowns at the company level and belongs to executives, not to the job.
18. Explain why $34,000 of additional borings is a good buy before the GMP is set and a poor one two months later.
Answer
Before the GMP, information changes the price: whatever you learn becomes scope, priced at unit rates in a competitive market with several bidders. After the GMP, information changes only the loss: whatever you learn becomes a change order priced in a market with one bidder — you — negotiating with a counterparty who has every reason to disbelieve you. The same fact is worth different money depending on when you learn it, which is the whole reason the influence-versus-cost-of-change curve matters.
19. Northgate's total daily exposure is $10,650/CD. Where does the number come from, and give two distinct ways it is used in this chapter.
Answer
$5,150/CD of extended general conditions (project staff, trailers, temporary facilities, cleanup, safety) plus $5,500/CD of liquidated damages to Meridian. It is used to convert a register row's schedule impact into dollars — R-04's 18 CD is also $191,700 — and to value the project-level schedule buffer: Wei Chen's 25 calendar days between the internal target of August 24, Year 2 and the contract date of September 18, Year 2 are worth $266,250 of protected exposure.
20. State the test that distinguishes a legitimate contingency from concealed margin, and explain why it works in both directions.
Answer
"Could you show the owner the rows?" Not would you — the answer to that is often no, for legitimate competitive reasons. Could you. It works in both directions because it is about traceability rather than disclosure: if every dollar traces to a named event with a probability and an impact you actually believe, you are on the right side of the line even if nobody ever asks; if it traces to nothing, you are on the wrong side even if nobody ever asks.
Applied Scenarios
21. You take over a $19,000,000 job at 50% complete. The original contingency was $520,000; $364,000 has been drawn. The contingency-use log has amounts and dates but no register row IDs, and there is no register in the project files. The previous project manager reports the job "in good shape."
Compute the burn ratio, say what you can and cannot conclude from it, and list the first four actions you take in your first week.
Answer
Burn ratio = ($364,000 ÷ $520,000) ÷ 50% = 70.0% ÷ 50% = 1.40 — the "job is eating itself" band. At this pace the reserve is exhausted around 71% complete.
What you cannot conclude: whether the draws were legitimate. Every one of them may have been a real, unavoidable cost. The ratio tells you the rate, not the cause.
What you can conclude: the job has no forward visibility. Without row IDs, nobody can say what the remaining $156,000 is protecting against, and without a register nobody can price what is left.
First week, in order: (1) Rebuild the register from the ground up against the remaining scope — not the original one, a forward-looking one, with a named owner and trigger on every row. (2) Reconstruct the log by categorizing all nineteen-plus draws into what they would have been rows for; the proportion with no plausible row tells you how bad the identification was. (3) Build a cost-to-complete forecast, not a cost-to-date report — a job 50% billed and 70% through its reserve is telling you something. (4) Take all three to your operations executive this week with a number and a recommendation, before the next monthly cycle. Burn ratios do not improve on their own.
22. You are pricing a $7,200,000 hard-bid job. Your register of six rows totals $118,000 of expected value. Your company standard is 4% of a $6,100,000 cost of work. Bid is in five hours.
Show the top-down number, the ratio to bottom-up, and then make three decisions with one sentence of justification each: what you carry, what you transfer, and what you say to your operations executive.
Answer
Top-down: 4% × $6,100,000 = $244,000. Ratio to bottom-up: $244,000 ÷ $118,000 = 2.07×.
What you carry. Not $118,000. That is a mean, and funding a six-row portfolio at its mean means running out roughly half the time; the 80th percentile on a small portfolio where one event can dominate commonly runs around 1.5–2.0 times the mean, so call it $190,000 for the identified rows, then load for what is not on the list. With only six rows on a $7.2 million building, a loading in the range of half again is defensible — which lands you close to the company's $244,000 and tells you the standard is roughly right.
What you transfer. Whichever two rows have the longest schedule tails and a counterparty who genuinely controls them — a supplier for a lead-time row, an installer for a workmanship row — because transfer to the controlling party costs less than the expected value it removes.
What you say. "The register is six rows on a $7.2 million building; the number is defensible and the list is thin. I am carrying $244,000, I have transferred two rows for about $15,000 of hard cost, and if we win I want two weeks to find the rows we missed before I build the budget." The honest answer at hour five is not a different number. It is a number plus a stated plan to fix the thing that is actually wrong.
Scoring Guide
| Score | Where you stand |
|---|---|
| 20–22 | You have it. You can build a register, size a contingency two ways, and defend both. Go do the Project Checkpoint. |
| 17–19 (77%+) | Ready to proceed. Re-read §6.6 on the five money buckets before you write your Willow Street reconciliation. |
| 13–16 (59–77%) | Solid on the concepts, shaky on the arithmetic. Redo Part C of the exercises with the chapter closed, then re-take questions 4–9. |
| 9–12 | Re-read §6.5 and §6.6, then work the 📋 Try It drill in §6.10 without looking at the answer. The threshold concept has not landed yet. |
| Below 9 | Start again at §6.1 and read to the end of §6.6 in one sitting. This chapter is the hub of the book — the contract chapters behind you and the controls chapters ahead of you both run through it. |