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Evaluation of Life-Cycle Costs and Cost/Benefit Analysis in Comparing Sewer Replacement versus Sewer Rehabilitation

机译:下水道更换与下水道修复比较中的生命周期成本评估和成本/效益分析

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This paper presents an evaluation of the decision making process for evaluating sewerrehabilitation versus sewer replacement. Historical data from multiple communities were used toevaluate capital cost and life cycle cost of the difference between utilizing sewer rehabilitationversus sewer replacement. A cost and benefit analysis was also performed to determine nonmonetaryfactors which could weigh into the decision making process. Sewer rehabilitation wasfound to have lower initial capital costs, but life-cycle costs between the two alternatives aresimilar. Sewer replacement may also present opportunities for other infrastructure improvementsand overall cost savings. Prior to performing sewer rehabilitation, a comparison should be madebetween rehabilitation and replacement, evaluating all factors including capital cost, life cyclecosts and overall project benefits.
机译:本文介绍了对下水道评估的决策过程的评估 修复与下水道更换。来自多个社区的历史数据用于 评估下水道修复与使用之间的差异的资本成本和生命周期成本 与下水道更换。还进行了成本和收益分析以确定非货币性 可能影响决策过程的因素。下水道恢复原为 被发现具有较低的初始资本成本,但两种选择之间的生命周期成本是 相似的。下水道的更换也可能为其他基础设施的改善提供机会 和总体成本节省。在进行下水道修复之前,应进行比较 修复和更换之间,评估所有因素,包括资金成本,生命周期 成本和整体项目收益。

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