Amendments to the Construction Code Rules (2006 Michigan Mechanical Code) take effect December 3, 2007. All units of government who administer and enforce a construction code are required to use the rules promulgated under 1972 PA 230, the State Construction Code Act. The State Construction Code Act was amended by 1999 PA 245, effective December 28, 1999, requiring the use of the State Codes as they are updated by rules promulgated after October 15, 1999.

These rules adopt by reference, in R408.30901a of the Michigan Administrative Code, the International Mechanical Code, 2006 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 Mechanical Code. The deletions, additions, and amendments have been incorporated into this publication for ease of use.

R 408.30901a Adoption by Reference of the International Mechanical Code.
Rule 901a. The provisions of the International Mechanical Code, 2006 edition, except for Sections 103.2, 103.4, 104.2, 106.5.1 to 106.5.3, 107.1.2 to 107.1.2.3, 109.2 to 109.7 and Appendix B govern the construction, alteration, relocation, demolition, use and occupancy of buildings and structures. With the exceptions noted, the code is adopted in these rules by reference. All references to the International Building Code, International Residential Code, International Energy Conservation Code, International Electrical Code, International Mechanical Code, and International Plumbing Code mean the Michigan Building Code, Michigan Residential Code, Michigan Uniform Energy Code, Michigan Electrical Code, Michigan Mechanical Code, and Michigan Plumbing Code, respectively.

The 2006 Michigan Mechanical Code regulates the design, installation, maintenance, alteration and inspection of mechanical systems that are permanently installed and utilized to provide control of environmental conditions and related processes within buildings. This code shall also regulate those mechanical systems, system components, equipment, and appliances specifically addressed in this code.

Exceptions:

1. Mechanical systems within one- and two-family dwellings shall be constructed and maintained in accordance with the Michigan Residential Code for One- and Two-Family Dwellings.

2. Mechanical systems in existing buildings undergoing repair, alterations, or additions, and change of occupancy shall be permitted to comply with the Michigan Rehabilitation Code for Existing Buildings.