An improvement to the roadway is desired from Philmont Scout Ranch to Springer in northeastern New Mexico. Alternative N (for north) costs $2,400,000 initially and $155,000/year thereafter. Route SA (for south, Alternative A) will cost $4,200,000 initially, and $88,000/year thereafter. Route SB is the same as SA with wider lanes and shoulders. It costs $5,200,000 initially with maintenance at $125,000/year. User costs considering time, operation, and safety are $625,000 for N, $410,000 for SA, and $310,000 for SB. The salvage values for N, SA, and SB after 20 years are 20% of initial cost, respectively. Using a MARR of 7% and a 20-year study period, which should be constructed? Solve, a. Use an incremental B/C analysis. b. Use a B − C analysis. c. Which route is preferred if 0% interest is used?
An improvement to the roadway is desired from Philmont Scout Ranch to Springer in northeastern New Mexico. Alternative N (for north) costs $2,400,000 initially and $155,000/year thereafter. Route SA (for south, Alternative A) will cost $4,200,000 initially, and $88,000/year thereafter. Route SB is the same as SA with wider lanes and shoulders. It costs $5,200,000 initially with maintenance at $125,000/year. User costs considering time, operation, and safety are $625,000 for N, $410,000 for SA, and $310,000 for SB. The salvage values for N, SA, and SB after 20 years are 20% of initial cost, respectively. Using a MARR of 7% and a 20-year study period, which should be constructed? Solve, a. Use an incremental B/C analysis. b. Use a B − C analysis. c. Which route is preferred if 0% interest is used?
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