Codes and standards

​Program news and updates

The division works with building officials, technical committees, advisory boards, and the public to adopt, amend, and interpret the Oregon Mechanical Specialty Code (OMSC). This code applies to the design, installation, alteration, and inspection of mechanical systems ​that are permanently installed, and those systems used to provide control of environmental conditions and related processes within buildings.

Adopted codebook

Amendments and additional provisions

Appendix D - New construction provisions​ - Effective Jan. 1, 2018
Pizza oven definition amendments​ - Effective July 1, 2016

New to the OMSC​ - Effective July 1, 2014
Compilation of OMSC amendments​​ - Effective July 1, 2014
​​Significant changes to the 2012 IMC and 2012 IFGC​


Guards Section 304.11 errata - Issued Aug. 19, 2015

Additional codebook information

Issued code interpretations
Approved alternate methods
Recent appeal decisions
Codebook history​

Program tools and resources

Inspection tools

Cite it, write it rules
​Cite it, write it checklist​

Program activities

Mechanic​al Board
Code and rulemaking committees​​​​​​​​​​​​​​​​​​​​​​​​​​​

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