| Course | MT382 Construction Cost Estimating |
|---|---|
| Unit | Unit 6 |
| Paper type | Seminar reflection |
| Length | About 780 words, 5 pages double-spaced |
| Format | APA 7 student paper |
| School | Purdue University Global |
| Program | BS in Business Administration |
| Updated | October 2026 |
Free sample paper for MT382 Unit 6
What Does the Ten Percent Pay For? An MT382 Unit 6 Seminar Reflection on Sizing Early Contingency
[Student Name]
Purdue University Global
MT382: Construction Cost Estimating
Unit 6 Seminar Reflection
[Instructor Name]
[Date]
The seminar, classmates and estimate are composite; the sources cited are real.
The Exercise
Groups were asked to size contingency for a conceptual estimate with a subtotal of 12,392,746 dollars: building and site work for the parks district's planned gym-and-fitness center, with no site survey, no borings and a program the parks district had not finished deciding.
Ten Percent, Kept as Proposed
I spoke first. My proposal was 10 percent of the subtotal, 1,239,275 dollars, and my reasoning, in my notes, was: "Ten percent is standard for an early estimate; it's what we carried on the clinic job last year." I keep the sentence because the change I want to describe started with it. The figure was not wrong because it was ten. It was wrong because I could not say what it was for.
The Question That Emptied It Out
Jonah, who estimates for a mechanical contractor, asked one question: which risks does the ten percent cover? Nobody answered. We could not list a single item the money was meant to pay for. The group agreed that a contingency unable to name its risks cannot be defended to a board, or checked later when it is spent.
So we rebuilt the number from the risks themselves. Design development growth, the scope that appears as drawings mature, we priced at 6 percent, 743,565 dollars. Site conditions, with no survey or borings, at 5 percent, 619,637. Program items the district had not decided, such as a community kitchen, at 4 percent, 495,710. The choice of mechanical system, still open between rooftop units and a central plant, at 3 percent, 371,782. And the gym's long-span roof, which the structural engineer had not yet sized, at 2 percent, 247,855. The sum was 2,478,549 dollars, 20 percent, exactly double my flat figure.
A contingency that cannot name its risks cannot be defended when it is set or checked when it is spent.
How Each Version Would Look to the Board
We then imagined presenting both versions to the parks board. The flat version reads as one line, 1,239,275 dollars, labeled contingency, and invites one question: why that much? We would have had no answer beyond habit. The itemized version reads as five lines, each tied to something the board already knew was undecided: the site, the kitchen, the mechanical system, the roof and the drawings themselves. Each line also tells the board how to shrink it. Choosing a site and drilling borings would let the site line fall; deciding the program would retire the four percent for undecided items. The itemized contingency is twice as large, yet I think it would be easier to approve, because the board could see what it was buying and what would make it smaller.
The Correction I Did Not Expect
My first instinct, once we had five lines, was to add a sixth for escalation: 8.2 percent to a construction midpoint 23 months away, at 4.2 percent a year. The instructor stopped us. Escalation is not contingency. AACE International (2020) treats escalation as a separate allowance driven by time and market conditions, while contingency covers uncertainty in scope and conditions. Folding escalation in would have hidden a date-driven cost inside a risk allowance, so that a delay in funding would quietly consume money meant for site conditions. We moved escalation to its own line, outside the twenty percent.
Contingency Is Not the Range
The last part of the seminar separated two ideas I had blurred. Contingency is money we expect to spend, on things we know are likely but cannot yet price. The accuracy range around the total, minus 20 to plus 40 percent at this stage, describes how far the final cost might fall from the estimate even after contingency. Holm et al. (2005) present contingency as part of the estimate itself, not as a margin of error around it. A board that sees a twenty percent contingency and assumes the total is now safe has misunderstood both. Flyvbjerg et al. (2002) showed how often public projects exceed their early budgets, which is why the range must be shown even when contingency is generous.
What I Will Do Differently
Next time I am asked for contingency, I will start by listing the unknowns and pricing each one, and I will not offer a percentage I cannot break into lines. Where I borrow a figure from another job, I will say so and explain why the jobs are alike, or admit that they are not.
References
AACE International. (2020). Cost estimate classification system: As applied for the building and general construction industries (Recommended Practice No. 56R-08). AACE International.
Flyvbjerg, B., Holm, M. S., & Buhl, S. (2002). Underestimating costs in public works projects: Error or lie? Journal of the American Planning Association, 68(3), 279-295. https://doi.org/10.1080/01944360208976273
Holm, L., Schaufelberger, J. E., Griffin, D., & Cole, T. (2005). Construction cost estimating: Process and practices. Pearson Prentice Hall.
MT382 Unit 6 instructions, in plain terms
The Unit 6 seminar asks groups to set contingency for an early estimate, and the reflection records in the student's voice how their thinking changed. The starting proposal should appear as it was made, with its reasoning. Instructors look for the question or exchange that tested it and for how the group rebuilt the figure. Course concepts, such as the difference between contingency and escalation or between contingency and accuracy, should be applied to the case. Disagreements and corrections are worth recording. The reflection usually closes on a practice the student will use. Students who completed the written alternative reflect the same way on their own first figure and its revision, citing the same concepts.
How the MT 382 Unit 6 example is put together
Beginning with the exercise and the subtotal, the sample quotes the writer's ten percent proposal and where it came from. Jonah's question follows, and the group's rebuilt contingency is listed risk by risk with dollar values, under a highlighted line that a contingency must name its risks. A section imagines how each version would read to the board. The instructor's correction on escalation is recorded, citing AACE International. A section separates contingency from the accuracy range, with Holm and colleagues and the research on public works underestimation. The closing paragraph commits to pricing unknowns first and naming any borrowed figure's source, along with whether the earlier job truly resembled this one.
MT382 Unit 6 rubric: what earns full points
Seminar reflections in estimating are generally marked on honesty about the starting figure, clarity about what changed it, accurate use of course concepts and a practical conclusion. Quoting the original proposal and its reasoning shows candor. Rubrics reward a rebuilt contingency tied to named risks with dollar values. Recognizing that escalation is a separate, date-driven allowance shows conceptual accuracy. Distinguishing contingency from the accuracy range demonstrates understanding that graders often probe. A specific commitment for future work earns more than a general lesson. The writer's own voice should carry the piece, with AACE, the course text and the underestimation study listed in APA 7. A reader who missed the session should still be able to follow how the group's number grew.
Common MT382 Unit 6 mistakes, and how to avoid them
Reflections on contingency often explain the concept from the textbook and leave out the writer's own first figure. Others describe the group's final answer as if everyone agreed from the start. A frequent gap is folding escalation into contingency without noticing, then calling the total contingency. Some reflections treat contingency as a margin of error rather than money expected to be spent. Closing lessons tend to be general, such as being more careful, which changes nothing on the next estimate. Before drafting, write your first figure and your final one, and list what the final one pays for. The list is the evidence of your change, and it should be the center of the reflection.
Get an MT382 Unit 6 example written to your instructions
Seminar reflections rest on your own session's events, so note what the group was asked to size, the contingency you proposed first and the moment it changed, live or in the written alternative. Attach what Unit 6 asks for plus its rubric; the first reflection costs nothing, arrives in 24-48h, and turns every percentage into dollars without naming classmates. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.
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MT382 Unit 6 questions, answered
What is the difference between contingency and escalation?
Contingency covers costs expected to arise from things not yet defined, such as design growth or unknown site conditions. Escalation covers price increases over time until the work is bought. AACE International's definition of contingency excludes escalation, so separate lines show which part of the allowance depends on risk and which on the calendar.
How do I size contingency from risks?
List the unknowns the current design leaves open, estimate what each could reasonably add, and total them. Percentages of the subtotal are fine at a conceptual stage if each is tied to a named risk. The total matters less than showing that every part of it answers a specific question.
Is the accuracy range the same as contingency?
No. Contingency is an amount inside the estimate, expected to be spent. The accuracy range describes how far the final cost might fall above or below the estimate, contingency included. A conceptual figure can carry 20 percent contingency and still have a range extending well beyond it.
Where can I find a free MT382 Unit 6 sample paper?
This page has the full MT382 Unit 6 seminar reflection on replacing a flat ten percent contingency with five priced unknowns.
Why is escalation not part of contingency in the MT382 Unit 6 sample?
Escalation depends on time and market prices, while contingency covers uncertain scope and conditions, so folding them together would hide a date-driven cost inside a risk allowance.