WELL and circadian lighting design update

Tristan, I did LEEDv4/WELL consulting for an 18,500sf fit-out project in Boston last year (single floor of a high-rise tower), and circadian lighting was a component of that. We used tunable white LED fixtures: a combination of wall-washers around the interior core and linear tubes over the open workstations wrapping the perimeter. Overall, it was very successful and cost-effective (Lewis Lighting was our lighting designer – highly recommend). Here are a few lessons learned: * We were afraid the requirements for WELL might up the LPD. We were pleasantly surprised that we could meet the 28fc ambient lighting requirement with fewer fixtures through efficient layout of the linear lighting. It resulted in a high quality light with a reduced LPD (0.51-0.57w/sf range) for the open office. * We were afraid the WELL requirement for banks of lighting < 500sf would blow the budget for switching. We worked with our utility provider to maximize rebates for lighting and found their requirements for “banking” was more stringent than WELL (292sf max.) * Initially, there was skepticism about the lighting and even fear that everything would be too “blue”. Thus far, there are no complaints about the lighting system (knock on wood), and having visited the space many times (day, noon, and night), it changes throughout the day subtly and is bright and vibrant – a major component of the design of the space. * Overall, we did spend more for the lighting design than a traditional system. That was one of the areas of innovation in WELL; however, the rebate money/ROI on efficiency paid the fees of the lighting designer (I’d argue a mandatory team member for a WELL project)! Overall, we let WELL drive the design of the space, sprinkling in eccentricities of LEED where needed. In the end, we were able to deliver a LEEDv4/WELL-Silver compliant space for about a 5% cost premium – a pleasant surprise for all. This not only attests to achievability but also the strong overlap between both systems. I hope this helps! Blake Jackson, AIA, LEED/WELL Faculty, Fitwel Ambassador Sustainability Design Leader, Associate Stantec Architecture 311 Summer Street Boston, MA 02210-1723 O: (617) 234-3194 M: (706) 280-3957 Blake.Jackson@stantec.com [Stantec] The content of this email is the confidential property of Stantec and should not be copied, modified, retransmitted, or used for any purpose except with Stantec's written authorization. If you are not the intended recipient, please delete all copies and notify us immediately. ü Please consider the environment before printing this email. From: Tristan Ro