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ASHRAE Standard 90.1 is a continuous maintenance standard. As such, there are on-going updates and addenda which are proposed, public commented, and approved/published. The question is when do these addenda become 'enforceable' as part of the standard? There are typically >100 addenda per cycle which are approved, but have not found any clear direction dictating when these go into effect.
One argument would state that the addenda are not part of the enforced version of the code. If were to go buy a version of this standard or view it on a hosting service like TechStreet those would reflect the standard at the time of original publication and not the numerous addenda. Now, the burned is on me/user to review all added for any potential changes to the standard, just to follow the standard. At that point, why not just use the newer/next published version of the standard which includes all previous addenda?
The counter to this is that it's as soon as they are published, addenda are in effect. This poses practical limitations as an AHJ could have adopted a code with no means of knowing what addenda may subsequently get published. [Ex: ASHRAE 90.1-2019 is current standard, but there is no way to know what all addenda could be added before the 2022 version is published.] Further, I have not found a source for 'living' documents which incorporate addenda on an on-going basis. But, this is the only way for the standard to reflect the current direction from the SSPC.
Most AHJ's from what I have seen are not enumerating which addenda are to be included or not, as part of their adopted code. Is there an 'official' interpretation from ASHRAE / ICC / NFPA on addenda to code?
