ICC announced the publication of the 2021 International Plumbing Code (IPC) and International Mechanical Code (IMC). A little known secret that occurs in the code business is before a code gets published, it is reviewed by the Code Correlating Committee (CCC). The purpose of the CCC is to correct mistakes that occur when a code change modifies one section yet fails to modify a companion section. Or, if two code changes result in a conflict in the code. If the code is not correlated, it may not make sense; or it may be confusing regarding the application of the requirements.

Basically, the CCC is supposed to make sure that the code does not look ridiculous with known mistakes. That would be a problem for the model code group. In many ways, the CCC is an immensely powerful committee, having the ability to modify code text for consistency and correctness.