"These rules adopt by reference, in R 408.30701 of the Michigan Administrative Code, the International Plumbing Code, 2012 edition, as published by the International Code Council, Inc., and include deletions, additions, and amendments to the International Code. The subsequent rules either add, amend, or delete certain provisions of the International Plumbing Code. The deletions, additions, and amendments have been incorporated into this publication for ease of use"--Introduction.