Proposed Practice for Alternative Bidding of Highway Drainage Systems (2015) / Chapter Skim
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Pages 41-45
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From page 41... ...
41 Introduction to the Recommended Practice The Recommended Practice in AASHTO format developed during the execution of NCHRP Project 10-86 is presented in this report with commentary as Appendix A Worked examples of the Recommended Practice are presented in Appendix B to aid designers in the use of the Recommended Practice.
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42 practices can be considered within the framework of this Recommended Practice. The Recommended Practice indicates which related design issues are not inherently addressed, so that these issues may be addressed outside of this methodology.
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43 Successful evaluation of a large number of pipe system options, as completed during application of the Recommended Practice requires a systematic process for completing and tracking the results of each evaluation phase. To achieve the goals of systematically and clearly presenting the large number of technical and policy evaluations involved in the Recommended Practice, a matrix approach was developed to track and report the pipe system selection process.
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44 pipe option. Matrix cells for which that type and size of pipe are not available are left blank to indicate lack of availability as the reason for elimination of that option.
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45 of estimated and actual material service lives will allow for research and data-mining to improve and calibrate existing culvert design methods through feedback loops within the Recommended Practice. Specifically, the developing research topics of service life prediction and failure modes can be significantly improved through the tracking and sharing of actual drainage pipe system service life data across and within AASHTO agencies.
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