Code Determination 15 – Use of ASHRAE 90.1 in Lieu of IECC Code

Code Determination Number: 15

Date: October 1, 2024

Code Edition: 2021 IBC, Chapter 13 and others

Code Section: Varies (where references to the IECC code are stated)

Subject: Use of the ASHRAE 90.1 (Energy Standard for Buildings) in lieu of the ICC International Energy Conservation Code (IECC)

Question (from various design consultants):

The ICC codes reference use of the IECC code in numerous locations, but it doesn’t appear that the University has adopted the IECC. ˿��Ƶ lists the ASHRAE 90.1 on the adopted codes list. Do we simply provide design to the ASHRAE 90.1 standards and disregard the IECC?

Does the University intend on adopting the IECC?

Answer (from UM System):

Yes, any references to the IECC can be disregarded.

Basis of Design documents, Code Compliance documents, and overall project design shall be based on the ASHRAE 90.1 (use the version listed on the current UM adopted codes list).

˿��Ƶ does not intend to adopt the IECC. If future mandates would require adoption of the IECC code, notices will be disseminated to the campuses.

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