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The Construction & Materials Specifications (C&MS or Spec Book) are a definitive set of specifications for ODOT construction projects and contacts. Current Version C&MS - 2023 Edition Archived Versions C&MS - 2019 Edition C&MS - 2016 Edition C&MS - 2013 Edition C&MS - 2010 Edition C&MS - 2008 Edition C&MS - 2005 Edition