Service Life of Culverts (2015) / Chapter Skim
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4 CHAPTER TWO SYNTHESIS OF THE STATE OF THE PRACTICE This chapter summarizes the results of the survey of North American transportation agencies regarding the service life of culverts, which was performed from March through July 2014. Summary plots and tables of the results are provided in Appendix A, with select results of interest summarized in this chapter.
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5 polyvinyl chloride (PVC) , while about a quarter are using steel-reinforced HDPE, polypropylene, and ductile iron.
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6 The tools and aids used to complete MSL evaluations typically including some combination of assumed values, agency-specific data, and industry-supplied data. Software programs are still relatively infrequently used to predict MSL values.
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7 • A wide range of practices for evaluating pipe service life are currently in use across North American transportation agencies. • Most agencies are comfortable designing for a range of pipe material types and appreciate the differences in performance each provides.
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