Received answers from below questions from NIST Andy Persily

1. Is there a preferred bookends range of CO2 for both “optimal” energy and human performances?

Andy: No

2.Is the ASHRAE ventilation of 1000-1200 ppm average, probably not based on performance, suggesting current ventilation rate is sub-optimal with cognitive... Read more

I am excited to announce that BuildingTransparency.org just launched downloadable specs and associated guidance that a couple of us have been working on for a few months.  Here is the EC3 announement:

We are working on a multi-family project in Hartford that is townhouse style so each unit has an exterior door. The client has requested electronic key fob hardware. Has anyone had experience with retrofitting a passive house door with electronic hardware or have they used a door that is already fitted with electronic hardware? 

Hi all, we're looking for a West Coast Regional Sustainability Specialist if you know of anyone who might be interested! They would be part of our amazing firmwide Sustainability team, and could potentially be based out of LA, Costa Mesa, San Francisco, Oakland, or Seattle. Please reach out if you know of anyone who might be a good fit, I'm... Read more

Join us for the Peer Networks-exclusive version of this Greenbuild presentation!

Register HERE.

A New Standard in Facade Design
November 30th, 2020
1pm - 2pm ET (10am - 11am PT)

Description and Presenters: Current façade design focuses more on operating carbon (or energy), even when embodied carbon is accounted... Read more

Hi all - I wanted to see if anyone will be in the Chicago area for the upcoming ASHRAE conference (21-23rd) and is interested in an informal meet-up? Or if you aren't going but are already in the Chicago area? Let me know and I'll see if we can organize meet-up!

I'm curious if anyone can share their strategy on indoor air quality for the return to office. Is this something that is prioritized at your firm from a wellbeing standpoint and with the current health crisis at hand? Lendlease is looking into options to safeguard our employees/occupants as we move back into the workplace and I'm researching... Read more

In the Passive House session at the Winter Summit, I spoke about a Massachusetts DOER report that found that meeting the new energy code in MA (passive house or better in most cases) is cheaper for some building types than traditional construction. Some of you asked to see the report. It was a power point show. On page 34 of this slide deck... Read more

Greetings, Green Gurus:

As unbelievable as it sounds, the Environmental PROTECTION Agency has launched a PR blitz in support of their "new use rule" on asbestos. So the BuildingGreen community needs to push back harder. I'm reposting the links to the letter of opposition that Mary Ann Lazarus put up last week. We definitely need more... Read more

Hi gurus,

Do any of you have preferred portable devices for indoor air quality monitoring? I know it's hard to find apples to apples, but ideally temperature, CO2, VOC, PM2.5, PM5 would be on the list. Mid-level accuracy - better than consumer, not as $ as IAQ professional level. Thanks!

Hi there SCLers,

Hope everyone is safe and healthy. I am posting on behalf of the Steeering Committee to let you know that the Committee has now adopted a Core Purpose Statement for the SCL Group. Please give it a quick read; we will likely sit with this and spend some time internalizing what it means at the upcoming Summit. 

The... Read more

Welcome to the quiz portion of Finding Products for LEED v4 and v4.1!

Learning Objectives
Upon completing this course, participants will be able to:


Rotary Uninterruptible Power Units

Power interruptions and brief changes in voltage can damage electrical equipment, compromise computer data, shut down manufacturing, and endanger hospital patients. In the case of power outages, generators usually take over, but about 98% of all interruptions last less than ten seconds, and there is a... Read more

Welcome to the quiz portion of Passive Solar Heating.

Learning Objectives
Upon completing this course, participants will be able to:


1. Explain the three classic approaches to passive solar.
2. Understand the relevance of passive solar today.
3. Describe some key elements of passive solar design.
... Read more

Hi folks,

There are a few Peer-Network related opportunities at the AIA Conference on Architecture, and it's coming up soon (June 4-8)! If you'll be in town, I hope you can join us! And if you're speaking at the Conference, let us know--whatever people in this network are talking about is likely to be super-interesting to the rest of us... Read more

Hi Small Firm Sustainable Design Leaders!

Our call today at 1pm Eastern will focus on the ways in which your firm is impacted differently than larger firms on the variety of topics and issues that are reflected in the 2020 SD Leaders Winter Summit REPORT. Take a look at this report and especially at slides 14-33. Bring your observations... Read more