Estimating Life Expectancies of Highway Assets, Volume 1: Guidebook (2012) / Chapter Skim
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1 The deterioration of highway infrastructure begins as soon as it is put into service. Effective management of highway system assets requires a good understanding of the causes and rates of deterioration and the ultimate life expectancy of each asset.
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2 estimating Life expectancies of highway assets spreadsheet models. More broadly, the guide is framed with a vision of asset management implementation, consistent with AASHTO guidance, which will help senior managers to understand why they should implement the guide, what they should expect, and how to begin.
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Introduction: how to Use this Guide 3 gain agreement across the agency and with stakeholders on the agency's objectives, the rationale for resource allocation decisions, the process of satisfying objectives and in determining whether they have been satisfied, and the fairness of the agency's accountability measures. 1.2 Setting Goals and Objectives Calculation of life expectancy can be a fairly esoteric pursuit unless the agency has a clear idea of how it wants to use the information.
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4 estimating Life expectancies of highway assets asset lifespan are built into various design and maintenance tools and procedures. Predictions of asset life extension form a part of the justification for various maintenance, repair, and rehabilitation projects, programs, budgets, and policies.
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Introduction: how to Use this Guide 5 Chapters 4 and 5 of this guide will provide approaches and examples for most of these applications, which can be used by agencies to visualize how to put the techniques to work and which may be considered prototypes for applications and systems that the agency may want to develop as it gains more sophistication in asset management. 1.4 Delimiting the Scope of the Effort It is tempting to think that an analytical tool, once developed, can be applied to any type of asset in any part of an agency's network.
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6 estimating Life expectancies of highway assets for example. The early product should be attractive and persuasive and should address an immediate need, even if only a part of the need.
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Introduction: how to Use this Guide 7 sophisticated. So it is important to ask at the beginning of the effort: In what ways do we need to improve next?
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8 estimating Life expectancies of highway assets Table 1-2 lists the kinds of questions that a maturity scale survey would address. These include both technical and non-technical subject matter, the use of information as well as the ability to produce and manage it.
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Introduction: how to Use this Guide 9 Figure 1-5. Road map for asset management implementation (Gordon et al.
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10 estimating Life expectancies of highway assets corresponds to an implementation step, consisting of several tasks. Each step also corresponds to a step in the development of the life expectancy computations.
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