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NC-v4 EAc1:Enhanced commissioning

Envelope Cx

Dear all, I am CxA and I am trying to include Envelope Cx on my services. However, after a quick glance at the v4 guide, some questions have appeared. Which tests are mandatory to get this Cx? Who should do these tests? The contractor, wintessed by me? Of course, will be witnessed by the CxA but as a MEP Engineer and I have no clue on this matter. On the LEED Guide , it is included; Air infiltration, Water infiltration, Exhaust reentrainment, Thermal performance, Building envelope pressure, Building envelope air leakage and Daylighting glare control. Some of them are not typical on my country, so it will be difficult to be carried out. All should be done? Thanks in advance

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Scott Bowman
LEED Fellow
Integrated Design + Energy Advisors, LLC
LEEDuser Expert
377 thumbs up

Thu, 06/08/2017 - 20:14

Envelope commissioning is not something that you can just add to your services. It requires significant knowledge and foundational knowledge to evaluate, review, test, and confirm the performance of very complex building systems. There is not template or self-study for this kind of work. Sorry to be so direct, but I have almost 40 years in the built environment as an engineer, project manager, and commissioning agent. I do not have anywhere near the qualifications to perform this kind of work. If you want to add this service, either find qualified staff that has the building science background or look for a qualified sub-consultant to work with you. That is what I did when faced with this and developed some great relationships with some great firms and professionals.

Fri, 06/09/2017 - 11:59

Maybe I not express myself correct. My company has an architecture department with some great professionals, also we have some partners with experience on audits on envelopes. However, nobody knows about it. I just want to know which kind of tests are required to get this certification (obviously I will not carry out myself this part, I am an engineer not architect).
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Brett Farbstein
Commissioning Engineer
CannonDesign
LEEDuser Basic Member
4 thumbs up

Fri, 06/09/2017 - 12:24

While the specific tests are determined by the client/design team's goals and budget, you can refer to ASTM E2813 for a standard of care.
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Kevin Brock
Commissioning Manager
Schmidt & Stacy
LEEDuser Premium Member
0 thumbs up

Wed, 01/11/2023 - 17:36

Thanks Scott Bowman!  That is a very infomative response....   

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