Phase VI · Engineering Design Studio · Week 10–11
Quantity Takeoff and Cost Estimate
Develop quantity takeoffs from the drawings and build a documented cost estimate with contingency.
Quantity register
No quantities yet
Take off quantities from the drawing set: code, description, unit, quantity, waste factor and drawing reference.
Cost register
No cost lines yet
Add cost lines directly, or generate them from quantity items above.
Unit-cost reference (RSMeans-style, AACE Class 3–4)
| Item | Unit | Low ($) | High ($) |
|---|---|---|---|
| Structural excavation | CY | $8 | $22 |
| Cast-in-place concrete (footings/walls) | CY | $165 | $260 |
| Reinforcing steel, placed | TON | $1450 | $2100 |
| Structural steel, fabricated and erected | TON | $3200 | $4800 |
| HMA paving, placed | TON | $105 | $165 |
| RCP storm sewer, installed | LF | $60 | $140 |
Ranges are national averages; localize with a city cost index before finalizing an estimate.
Design warnings (2)
- No quantities taken off yet — every cost line should trace back to a drawing quantity.
- No cost lines developed yet — the roll-up cannot produce a total.
Learning objectives
- Take off quantities
- Apply unit costs
- Apply contingency and escalation
Engineering judgment
- Every quantity must trace to a drawing.
- State the estimate class and its accuracy range.
Governing standards
OSHA 29 CFR 1926
Construction Safety Standards
Excavation, fall protection, temporary works
Subpart P ExcavationSubpart M FallsEnvision v3
Sustainable Infrastructure Framework
Sustainability credits and scoring
Quality of LifeResource AllocationClimate and Resilience
FE Civil connection
Engineering economics
Handbook section: Engineering Economics
Practice this FE topicCost roll-up
Quantity lines
0
Module activities
Recommended next step
Design Report Builder
Assemble the complete Capstone II design report with calculations, drawings, results and appendices.
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