I'm hoping someone knows the anser to this question. For the LEED ND certification the minimum requirement is "The LEED project should contain at least two habitable buildings and be no larger than 1500 acres." Does habitable mean buildings with dwelling units?

Hi all,

We are about to start a affordable housing passive house project in Boston and in a few presentations I've seen great signs that builders use to try to get the point across to subs as to how important air sealing is. Some are even quite funny! The builder we are working with does not have a sign like this, but is open to ideas.... Read more

Hello, what acceptable levels of air quality are you using to evaluate natural ventilation strategies for your projects?  In our Living Building we only open windows when PM10, PM2.5, etc. are within LBC and WELL limits.  In a seasonally smoggy urban environment, this limits how often we can utilize natural ventilation even if the outside... Read more

Hello Green Gurus,

We’re happy to see the first round of summit registrations rolling in! We’ve had lots of questions about specific topics for the sessions. As usual, the agenda will be based on topics that are top of mind for you.

Whether you are already registered or not, please fill out the Pre Summit-Palooza Survey to help us... Read more

Hello All,

A group of us (three architects and a builder- sounds like there should be a joke here) were debating this and we  are stumped.

Application: Residential exterior trim.

50 year warrantied composite product of agricultural byproduct with PVC (EPD not published yet) vs 100 year (if primed on all sides and painted or... Read more

I'm loving the winning projects this year--congratulations to everyone who participated in making them so great! 

(In case you missed the announcement, here's our slideshow on BuildingGreen, and here are the winners with all the details on AIA.org)

Nadav

For my first test post I'm going to be completely boring and ask about logistics.

If we know of someone that should be part of this forum, how do we invite them? There were a couple of people that I thought were on the Wiggio who I recently found out were not. There may also be folks from our regional groups who may not have been part... Read more

Ali Flynn and Alejandra Arce Gomez are planning a breakout meeting for the Waste Managment Group for all interested. 

Please fill out the doodle poll below so that we can find a good time:

https://doodle.com/poll/qxd4zxrw9xzrxwc6

Ali and Alejandra have drafted an updated version of the Commitment for Waste (attached) after... Read more

We're looking to expand our design performance group - let Peter or me know if you have someone to recommend to us! Here's the description. 

The Center for the Built Environment (CBE) at the University of California, Berkeley is conducting a survey to understand current practices and outlooks among design practitioners: architects, engineers, energy modelers, and related professionals. Our goal with this work is to improve climate change adaptation guidelines that support building... Read more

The EC3 Tool has come up quite a few times in the Green Guru's conversations.  We're hosting an online review with Stacy Smedley and Mark Chen from Skanska.

Wednesday September 29th at 3pm PST

The tickets are free and this will be a Teams meeting.

https://www.eventbrite.com/e/using-the-ec3-tool-the-why-and-how-tickets-...... Read more

Are FSC glulams available? By many manufacturers? Which ones?

THIS WEBINAR PURCHASE AND REGISTRATION IS CLOSED.

Hot spots: they might sound like fun places to hang out and have a drink—but in green building, they’re actually a bad thing. Something you track down so you can get rid of it. Kind of like being an environmentalist bounty hunter.

Life-cycle assessment (LCA) is... Read more

I was wondering if any design or contractor friend here can kindly share the carbon emission factor of excavation during construction. 

I found a paper that provides energy use rate per cubic meter and associated carbon emission in kgCO2 for different phase of construction such as excavation earth work, pouring and lifting concrete,... Read more

For questions, please email Jerelyn Wilson directly

Air movement keeps occupants comfortable when it's warm, so cooling setpoints can be higher, and natural ventilation is a viable option even at higher temps and humidity.

BuildingGreen-Approved Ceiling Fans

BuildingGreen approves Energy Star-certified ceiling fans with ECMs—motors using electronic commutators.

Energy and... Read more

Welcome to the quiz portion of Whole-Building Life-Cycle Assessment: Taking the Measure of a Green Building.

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


1. Define key concepts of whole-building LCA.
2. Recognize the inherent flaws, and potential gains, of whole-building LCA... Read more