| Course | MT382 Construction Cost Estimating |
|---|---|
| Unit | Unit 4 |
| Paper type | Assemblies estimate |
| Length | About 870 words, 6 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 4
Masonry or Panels on the Gym Wall: An MT382 Unit 4 Assemblies Estimate Under UNIFORMAT II Element B2010
[Student Name]
Purdue University Global
MT382: Construction Cost Estimating
Unit 4 Assemblies Estimate
[Instructor Name]
[Date]
The building, assemblies and unit prices are composite; the classification and sources cited are real.
Element and Quantity
The estimate is organized under UNIFORMAT II element B2010, exterior walls, which groups cost by building element rather than by trade (Charette & Marshall, 1999). The gym's exterior wall runs 460 linear feet around the gym at 32 feet to the parapet, for 14,720 square feet gross. Doors and windows remove 640 square feet, leaving 14,080 square feet net. Both options are extended over the same net area, so area never tilts the comparison.
Option A: Masonry Cavity Wall
Each component is priced per square foot of wall. Twelve-inch concrete block, grouted and reinforced, costs 24.60 dollars. Two inches of polyisocyanurate insulation in the cavity costs 4.15. A fluid-applied air and water barrier costs 3.40. Brick veneer costs 31.80. Flashing and sealants cost 2.65, and interior paint on the block costs 1.15. The system totals 67.75 dollars per square foot, or 953,920 dollars over 14,080 square feet. The reinforced block also bears the gym's roof joists, so no separate structure is needed along these walls.
Option B: Insulated Metal Panel Over a Split-Face Base
Three-inch insulated metal panels cost 29.40 dollars per square foot of wall. Steel girts to support them cost 4.60. A ten-foot split-face block base, which resists ball impact and damage at ground level, costs 9.25 when spread over the full wall area. Trim costs 1.85, and an interior impact liner costs 3.35. The system totals 48.45 dollars per square foot, or 682,176 dollars.
Panels cannot carry roof joists the way reinforced block can. Option B therefore receives sixteen steel columns along the gym walls, spaced to match the joist bearing, at 5,250 dollars each including footings, for 84,000 dollars. Option B's total is 766,176 dollars.
The columns belong to the panel option because the panels cause them; leaving them out would make panels look cheaper than they are.
The Comparison
Option B costs 187,744 dollars less than option A. The difference holds per square foot as well: 48.45 dollars plus about 5.97 dollars of columns, against 67.75.
Duration
Duration is reported but not converted into dollars. At the masonry productivity built in Unit 5, the block backup alone occupies about 52 crew days; panels take about 18. Thirty-four days of general conditions at 3,950 dollars a day would be worth 134,300 dollars, but only if the gym walls drive the critical path. Whether they do is a question for the schedule, not the estimate, so the saving is reported as possible rather than counted.
Performance
Option A provides about R-13 of continuous insulation from its two inches of polyisocyanurate. Option B provides roughly R-21 from the three-inch panel. Both resist impact at the base: option A through its block, option B through its split-face base and interior liner. Option A's brick needs little maintenance for decades; option B's panels may need sealant replacement at joints over time. Holm et al. (2005) note that assemblies estimates are most useful early precisely because they let designers compare whole systems on cost and performance together.
What Each Option Leaves to Other Elements
An assemblies estimate must say what it does not include, because each option shifts cost to other elements. Option A's reinforced block needs a heavier footing along the gym walls than option B's base, a cost carried in the substructure element and estimated there at about 18,000 dollars more for option A. Option B's panels need a parapet cap and a coping detail different from masonry, already included in its trim. Neither option changes the roof, the gym floor or the interior finishes. If the footing difference is added, option B's advantage grows to about 205,700 dollars. The estimate reports the footing difference separately rather than folding it into either option, so the element comparison stays clean and the board can see each effect.
A Note on Long-Term Cost
The comparison is a first-cost comparison. Over forty years, option B's higher insulation would lower heating costs in the gym, while option A's brick might avoid the joint resealing that panels need. A life-cycle comparison would require energy modeling and maintenance assumptions not yet available, and is left for design development.
Recommendation
The estimate favors option B on cost and insulation. Two conditions would reverse it. First, if the structural engineer finds that the column footings conflict with the underground stormwater detention planned beside the gym, relocating either could cost more than the 187,744-dollar difference. Second, if the city's design review requires masonry on public buildings facing the street, option A, or a hybrid with brick on the street face only, would be needed. Both questions should be answered before schematic design closes.
Class and Limits
This is an assemblies estimate at early schematic design, consistent with a Class 4 estimate under the building-industry classification (AACE International, 2020), and its unit prices are composite. It compares two options for one element and does not price the rest of the building.
References
AACE International. (2020). Cost estimate classification system: As applied for the building and general construction industries (Recommended Practice No. 56R-08). AACE International.
Charette, R. P., & Marshall, H. E. (1999). UNIFORMAT II elemental classification for building specifications, cost estimating, and cost analysis (NISTIR 6389). National Institute of Standards and Technology. https://doi.org/10.6028/NIST.IR.6389
Holm, L., Schaufelberger, J. E., Griffin, D., & Cole, T. (2005). Construction cost estimating: Process and practices. Pearson Prentice Hall.
What the MT382 Unit 4 assignment asks for
Unit 4 asks students to price alternative building assemblies for one element and recommend one. Each option should be priced as a complete system per unit of the element, then extended by the same measured quantity, so the comparison is fair. Instructors expect students to identify consequences that ride with an option, such as added structure, and to include them. Duration, performance and maintenance should be reported, even where they are not converted to dollars. Organizing the estimate by an elemental classification such as UNIFORMAT II is common. The recommendation should state the conditions that would reverse it, and the estimate's class and limits should be noted, since it prices a single element at an early stage.
How the MT 382 Unit 4 example is put together
An element-and-quantity section in the sample measures the gym wall once and cites Charette and Marshall. Option A is priced component by component. Option B is priced the same way, then charged for the sixteen columns the panels require, under a highlighted line explaining why the columns belong to the panel option. The comparison and duration sections follow, with the schedule question left open. Performance is compared, citing Holm and colleagues. A section shows what each option shifts to other elements, such as a heavier footing for masonry, and a note covers long-term cost. The recommendation names two reversing conditions, and the class section cites AACE, so the reader knows how much confidence a schematic-stage comparison deserves.
Where the points sit in the MT382 Unit 4 rubric
Assemblies estimates are generally assessed on whether options are priced as complete systems over the same quantity, whether consequential costs are assigned correctly, and whether non-cost factors and limits are stated. Rubrics reward measuring the element once and extending both options over it. Assigning added structure to the option that causes it shows fairness. Reporting duration without counting it as savings, until the schedule confirms it, shows discipline. Performance and maintenance comparisons show the estimate serves design decisions. Saying which findings, such as a footing conflict or a design review rule, would flip the choice shows judgment. An elemental classification, cited in APA 7, keeps the estimate organized and comparable with later work.
MT382 Unit 4 help: mistakes that cost points
Assembly comparisons often price one option as a system and the other as a single product, which makes the cheaper skin look like the cheaper wall. Another common gap is ignoring structural consequences, such as columns or heavier footings. Some papers convert time savings into dollars automatically, though the savings exist only if the element is on the critical path. Performance differences, such as insulation value, are often left out. Recommendations rarely state what would change them, which leaves the design team guessing when a new fact arrives. Before finishing, list everything each option requires that is not in its own line items. Anything on that list belongs either in the option's price or in a clearly labeled note beside it.
Get an MT382 Unit 4 example written to your instructions
If your Unit 4 prompt compares walls or roofs, send the options it names, the areas or drawings, any course cost data and the rubric. The first assemblies estimate costs nothing and arrives within 24-48h, both systems priced on the same net area, consequential costs included, and the recommendation stated with its conditions. 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 4 questions, answered
What is an assemblies estimate?
An estimate that prices building systems, such as a complete exterior wall or roof, per unit of area rather than item by item. It suits schematic design, when systems are chosen but details are not yet drawn. Grouping costs under UNIFORMAT II elements makes design options easy to compare and to carry into later estimates.
Should schedule savings be added to the cheaper option?
Only if the saved days shorten the project. Faster wall construction is worth general conditions money when the walls sit on the critical path; otherwise the time is float. State the saving in days and let the schedule decide whether it becomes dollars, as the sample does.
How many options should be compared?
Usually the number the prompt sets, commonly two or three. More options add pages without adding judgment unless each represents a genuinely different approach. Whatever the number, price them on identical areas, at matching depth and in the same dollars, so the comparison stays fair and the owner can see what separates them.
Where can I find a free MT382 Unit 4 sample paper?
This page carries the complete MT382 Unit 4 assemblies estimate, comparing masonry and insulated metal panel walls for a gymnasium.
Why are columns charged to the panel option in the MT382 Unit 4 sample?
Reinforced block can carry the roof joists, but panels cannot, so the sixteen columns exist only because of the panel choice and belong in its price.