Service Life of Culverts (2015) / Chapter Skim
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Pages 36-40
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34 CHAPTER FIVE PIPE PROTECTION, REPAIR, REHABILITATION, AND REPLACEMENT This chapter summarizes the most common available protection methods and materials, and also discusses rehabilitation, repair, and replacement techniques available to extend or reestablish culvert service life. Many agencies are developing more advanced pipe system inventories and asset management systems to facilitate better drainage infrastructure management and budgeting.
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35 In California, an alternative to concrete invert paving is the use of steel armor plating 0.25 to 0.50 in. thick over the bottom third of the pipe.
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36 male and female edges self-interlock to form a leak-tight joint. Typically, spirally wound liners use nonstructural grout or do not require grouting of the annular space.
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37 also provide structural enhancement and no excavation is required. The main limitation is that the culvert must be completely free of water and flow bypass may be required.
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From page 40... ...
38 The main advantages of pipe bursting include the installation of a new pipe, ability for pipe upsizing, and reduction of necessary excavation by 85% or more compared with open cut replacement. It is often more cost-effective than open trenching in urban environments.
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