LEED v4.1 references ASTM standard E2813 Standard Practice for Building Enclosure Commissioning regarding BECx requirements. This standard outlines two levels of commissioning: fundamental and enhanced. It's unclear which level of BECx commissioning is required to fulfill the requirements of this LEED credit.
For fundamental BECx, the BECxP needs to be engaged during the Design Phase, a minimum of one design review is required by the BECxP, and first installation field mock-ups are required as a minimum.
For enhanced BECx, BECxP needs to be engaged earlier during pre-design, a minimum of three design reviews are required, and pre-construction lab mock-up or on-site free standing building mock-ups are to be tested. The scope and number of tests and field reviews are vary between the two, which are further outlined in ASTM E2813.
Which level of BECx is required to qualify for this LEED credit? Or does the Owner have the liberty to choose and outline the BECx level in the OPR?
Lyle Axelarris
Boston Architectural CollegeJanuary 5, 2022 - 11:54 am
Does anyone have an answer for this very important question?
Deb Favaretto
Architect & Sustainability LeaderCannonDesign
4 thumbs up
November 1, 2022 - 3:12 pm
Any follow up here? Thanks
Aaron McEwin
Director of SustainabilityJordan & Skala Engineers
1 thumbs up
January 4, 2023 - 3:51 pm
The standard follows the language of the LEED rating system with "Fundamental" and "Enhanced".
The prerequisite call out the ASTM standard. Generally this would require a review of the building enclosure system, similar to the 2021 IECC.
For the Enhanced Commissioning Credit, the Enhanced Building Commissioning would apply, meaning starting earlier, review more frequently and most testing.