Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 13, Problem 12P
To determine
The present worth for each alternative and the preferred project based on the economic criteria.
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A reconstruction project of a 10-mile 4-lane concrete highway is proposed for next year. The initial cost per lane-mile is estimated to be $271000 with zero salvage value at the end of its service life of 30 years. The annual maintenance cost is expected to be $2710 per lane-mile. For a discount rate of 5.3%, compute the equivalent uniform annual cost.
Three transportation projects have been proposed to increase the safety in and around a residential neighborhood. Each project consists of upgrading existing street signing to highly retroreflective sheeting to increase visibility. The following table shows the initial construction costs, annual operating costs, useful life of the sheeting, and the salvage values for each alternative. Assume that the discount rate is 8%. Calculate the present worth for each alternative and determine the preferred project based on the economic criteria.
Discount Rate: 8%
Three transportation projects have been proposed to increase the safety in and around a residential neighborhood. Each project consists of upgrading existing street signing to highly retroreflective sheeting to increase visibility. The following table shows the initial construction costs, annual operating costs, useful life of the sheeting, and the salvage values for each alternative. Assume that the discount rate is 8%. Calculate the present worth for each alternative and determine the preferred project based on the economic criteria.
Alternatives
Initial Construction Cost($)
Annual Operations and Maintenance Cost ($)
Useful Life (Years)
Salvage Value ($)
1
19,000
2,500
10
3,000
2
8,000
4,000
5
900
3
20,000
2,500
10
4,600
Chapter 13 Solutions
Traffic and Highway Engineering
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