Guide for Pavement-Type Selection (2011) / Chapter Skim
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Pages 7-12
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From page 7... ...
In those cases, performance estimates can be based on the experiences of other agencies, together with the application of analysis tools such as the American Association of State Highway and Transportation Officials (AASHTO) Mechanistic-Empirical Pavement Design Guide, Interim Edition: A Manual of Practice (AASHTO 2008)
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From page 8... ...
For heavily trafficked facilities in congested locations, the need to minimize the disruptions and hazards to traffic may dictate the selection of strategies having long initial service lives with little M&R needed, designed at a high level of reliability. • Existing pavement condition and historical condition trends.
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From page 9... ...
In the long term, these differences result in different cost 9 Figure 3. Identification of pavement alternatives for a project.
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Data should be updated and expanded as necessary to accommodate the continuous evolution of structural design, materials, specifications, and construction practices. As noted earlier, the suggested approach is to use data housed in an agency's pavement management system database.
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From page 11... ...
Existing pavement sections with similar structural features, traffic loadings, subgrade type, and functional classes to those of the proposed alternatives are identified. The historical condition data of these sections are extracted from the pavement management system or other sources.
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From page 12... ...
Such a distress-dependent approach can be used to determine the effect of using materials and design features that are not represented adequately in the agency's pavement management system database. 3.5.2 Timing and Extent of M&R Treatments The timing and extent of future rehabilitation treatments for functional improvement (e.g., thin overlays and diamond grinding)
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