Standard Practice for Measuring Benefit-to-Cost and Savings-to-Investment Ratios for Buildings and Building Systems

Importancia y uso:

5.1 The BCR and SIR provide measures of economic performance in a single number that indicates whether a proposed building or building system is preferred over a mutually exclusive alternative that serves as the base for computing the ratio. It may be contrasted with the life-cycle cost (LCC) method that requires two LCC measures to evaluate the economic performance of a building or building system—one for each alternative.

5.2 The ratio indicates discounted dollar benefits (or savings) per dollar of discounted costs.

5.3 The BCR or SIR can be used to determine if a given building or building system is economic relative to the alternative of not having it.

5.4 The BCR or SIR computed on increments of benefits (or savings) and costs can be used to determine if one design or size of a building or system is more economic than another.

5.5 The BCR or SIR can be used as an aid to select the economically efficient set of projects among many competing for limited funding. The efficient set of projects will maximize aggregate net benefits or net savings obtainable for the budget.

Subcomité:

E06.81

Referida por:

E1121-15R20E01, E1185-15R20E01, E0917-17R23, E1369-15R20E01, E1057-15R20E01, E1074-15R20E01, E3130-21, E2204-15R20E01, E2103_E2103M-19R24, E2506-15R20E01, E1765-16R23, E1557-09R24, E3008_E3008M-16R23

Volúmen:

04.11

Número ICS:

91.010.20 (Contractual aspects)

Palabras clave:

benefit-cost analysis; benefit-to-cost ratio; building economics; engineering economics; investment analysis; savings-to-investment ratio;