FPE Cost Estimation & Budgeting 2 — Questions and Answers
Question 1: Which life cycle cost component typically represents the largest long-term expense for a fire sprinkler system in a commercial building?
- Initial installation cost
- Annual inspection and testing fees
- Periodic maintenance and repairs over the system's lifespan (Correct answer)
- Permit and design fees
Correct answer: Periodic maintenance and repairs over the system's lifespan
Periodic maintenance and repairs over the system's 25–50 year lifespan typically exceed initial installation costs when evaluated on a present-value basis.
Question 2: In a cost-benefit analysis for a fire protection retrofit, the 'net present value' (NPV) is positive when:
- Total installation cost is less than the insured value of the building
- Discounted benefits over the analysis period exceed discounted costs (Correct answer)
- The payback period is less than 5 years
- Annual insurance savings exceed annual maintenance costs
Correct answer: Discounted benefits over the analysis period exceed discounted costs
NPV is positive when the present value of all future benefits (insurance savings, avoided losses, etc.) exceeds the present value of all costs.
Question 3: When applying the 'value of statistical life' (VSL) approach in fire protection cost-benefit analysis, the VSL figure is used to:
- Set insurance premiums for building occupants
- Monetize the expected reduction in fire fatality risk (Correct answer)
- Calculate contractor liability for code violations
- Determine workers' compensation rates for firefighters
Correct answer: Monetize the expected reduction in fire fatality risk
VSL translates small reductions in fatality probability into monetary terms, enabling comparison against the cost of implementing a fire safety measure.
Question 4: A fire alarm system upgrade is estimated at $150,000 installed. If the annual insurance premium reduction is $12,000 and maintenance increases by $2,000/year, what is the simple payback period?
- 10 years
- 12.5 years
- 15 years (Correct answer)
- 18.75 years
Correct answer: 15 years
Net annual benefit = $12,000 − $2,000 = $10,000; simple payback = $150,000 ÷ $10,000 = 15 years.
Question 5: Which cost estimation approach uses historical cost data from similar completed fire protection projects and adjusts for size or scope differences?
- Bottom-up estimating
- Analogous estimating (Correct answer)
- Parametric estimating
- Three-point estimating
Correct answer: Analogous estimating
Analogous estimating relies on actual costs from past similar projects, adjusted by scaling factors, and is common in early-stage budgeting.
Question 6: In fire protection project budgeting, a 'design contingency' allowance is distinct from a 'construction contingency' because it specifically covers:
- Unexpected labor strikes or material shortages during construction
- Cost growth resulting from design evolution and incomplete scope definition (Correct answer)
- Owner-directed scope additions after contract award
- Inflation escalation between bid and construction completion
Correct answer: Cost growth resulting from design evolution and incomplete scope definition
Design contingency addresses uncertainty in an incomplete or evolving design, while construction contingency covers unforeseen field conditions during execution.
Question 7: Which factor most significantly increases the unit cost of a wet-pipe sprinkler system in a high-rise building compared to a low-rise structure of the same floor area?
- Higher ambient temperature requirements for sprinkler heads
- Increased water pressure requirements and booster pump costs (Correct answer)
- Greater number of inspectors required per floor
- Higher hazard occupancy classification of most high-rise uses
Correct answer: Increased water pressure requirements and booster pump costs
High-rise installations require pressure-boosting pump systems and additional pressure zones, substantially increasing material and equipment costs per square foot.
FPE Cost Estimation & Budgeting 2
Which life cycle cost component typically represents the largest long-term expense for a fire sprinkler system in a commercial building?