Cost Estimation & Budgeting Flashcards

In risk-informed fire protection cost analysis, 'expected loss' is calculated as:

Answer: Probability of fire occurrence multiplied by the magnitude of resulting losses

Expected loss = P(fire) × consequence (property loss, casualties, business interruption), providing a probabilistic basis for cost-justifying fire protection investments.

A fire protection system budget is being developed using a 'top-down' approach. This means the estimator first establishes:

Answer: A total allowable project cost derived from the owner's financial capacity or funding limit, then allocates to subsystems

Top-down estimating starts with an overall budget constraint and allocates downward to subsystems, contrasting with bottom-up approaches that sum detailed components.

When budgeting fire protection for a tenant improvement (TI) project in a leased building, which party typically bears the cost of upgrading the base building's fire suppression system to meet new code requirements triggered by the TI?

Answer: The party specified in the lease agreement, which varies by negotiation

Lease agreements vary widely on who pays for base building upgrades triggered by tenant improvements; this is a negotiated term that fire protection engineers must clarify before budgeting.

Which insurance industry mechanism directly rewards building owners with reduced premiums for installing fire sprinkler systems, effectively functioning as a financial incentive that should appear in life cycle cost analyses?

Answer: Insurance Services Office (ISO) Public Protection Classification (PPC) discount and sprinkler credit

ISO's PPC rating and specific sprinkler credits can reduce property insurance premiums by 5–40%, representing a quantifiable annual benefit in life cycle cost analysis.

A probabilistic cost estimate for a fire protection project produces a P80 value of $2.1M and a P50 (most likely) value of $1.8M. The owner should budget at the P80 level primarily because:

Answer: There is an 80% probability that the actual cost will be at or below $2.1M, providing a reasonable confidence level

A P80 budget means the project has an 80% probability of being completed at or under that cost, which is a commonly accepted confidence level for capital project budgeting.

When comparing the total installed cost of a water mist suppression system against a conventional sprinkler system for a machinery space, which factor most commonly offsets the higher equipment cost of water mist?

Answer: Significantly smaller pipe sizes reduce material and installation labor costs

Water mist systems operate at high pressure through smaller orifices, enabling significantly smaller diameter piping that reduces pipe material, support hangers, and installation labor.

In a fire protection project's earned value management (EVM) system, a Schedule Performance Index (SPI) of 0.85 indicates that the fire alarm installation subcontract is:

Answer: Completing only 85 cents of planned work for every dollar of scheduled work, meaning it is behind schedule

SPI = Earned Value ÷ Planned Value; an SPI below 1.0 means the subcontract is behind schedule relative to the baseline plan.