I am working on a LEED project with revolving doors. The targetted U value for glaze is 1.9 W/Sqft.K (including frames), SHGC 0.25. During the material submittal review, we noticed that the revolving door has U value of 5.6 W/Sqf.K. The supplier is saying that complying to 1.9 W/Sqft.K is not possible as such specifications for revolving doors are not available. Do we have any guidance in ASHRAE 90.1 or similar for revolving doors?
Is it fine if we neglect the thermal compliance of revolving doors? I know it is theoretically not desirable as the revolving door could act as the hotspot of heat gain in the project. Kindly provide your feedback.
Alokmay Behera
Sustainability ManagerGreen Initiative DWC LLC
October 23, 2023 - 5:13 am
I lately got to know that revolving doors are exempted from thermal compliance as per ASHRAE 90.1 (Section 5.1.3 and 5.4.3.4).
Thanks.
Afogreen Build
www.afogreenbuild.comGreen Building Consultant
246 thumbs up
July 9, 2024 - 1:04 am
Hi Alok,
As stated in ASHRAE 90.1 2010 Section 5.4.3.4, building entrances with revolving doors are listed in the exception if there is a vestibule. Therefore, if your project doesn’t have a vestibule, you still need to comply with the thermal compliance.
Best regards - Afogreen Build Team