2018 International Green Construction Code (IgCC) Released

On November 8, 2018, the new 2018 International Green Construction Code (IgCC) was released, which now incorporates ASHRAE Standard 189.1. AIA National is currently in the process of reaching out to local building code officials to ensure they adopt Appendix H along with the IgCC.

Appendix H is essential as it allows architects the option to specify either ASHRAE 90.1 or the 2018 IECC. By adopting both Appendix H and IgCC jurisdictions will comprehensively address every aspect of sustainable design; modernize building codes by ameliorating current challenges to sustainable design; and coordinate the energy requirements of the 2018 IgCC with the 2018 International Energy Conservation Code (IECC).

In an effort to better implement these changes, the AIA is providing architects, engineers and building code officials with webinars that will (1) highlight nuances in the 2018 IgCC and (2) explain how best to use the 2018 IgCC and Appendix H with other I-Codes. The first webinar in the series—available online—provides a review of the 2017 ASHRAE 189.1 standard and explains how it merges with the 2018 IgCC. Additional training will be provided during 2019. For building code training support, please contact AIA’s Codes Advocacy Program at codes@aia.org.

It is also important to note that while the AIA supports the adoption of the 2018 IgCC and Appendix H—which define minimum sustainability requirements within the I-Codes—we also believe we can take these initiatives further. Many architects and engineers want to address climate change by designing carbon neutral buildings. In order to achieve this goal, AIA is planning to propose a new Net Zero/zEPI stretch code option—that will go beyond the minimum requirements to achieve higher performance—for inclusion in the 2021 IECC. AIA will keep components informed of these developments.

If you have any questions regarding the adoption of Appendix H or the new IgCC, please email codes@aia.org or contact AIA’s Senior Director of Codes & Standards Policy – John Peavey.