Welcome to the quiz portion of LEED 2009: The Missing Manual.

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


1. Stay abreast of changes to LEED NC-2009.
2. Understand the more ambiguous aspects of LEED NC-2009.
3. Explain key interpretations of LEED NC-2009.
4.... Read more

Hello Green Gurus,

We have an exciting new addition to the Peer Networks Hub to share with you. The recordings of this summer’s 5 minute presentations are finally available! You can view the full list on the Resources Page in the Hub. Using the headings at the top, you can sort by presenter name, title, or the date or event at which the... 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

Hi Shane and Dennis,

What return address should we use for BIT User forum notification emails?  Ben suggests something like no-reply@bit-user.org but whatever you like is fine.

Once you decide, please let us know who controls the domain name (e.g. bit-user.org or bitbuilding.org).  Ben will send them instructions for editing the... Read more

Hi Fellow GG: I just wanted to make sure everyone saw the great announcement from the White House yesterday about Code updates to address energy efficiency and resilience. It's great to see these kinds of initiatives that hopefully can continue for a few more years. So let's try to take advantage of them (said by someone who lives in Missouri... Read more

Has anyone had any success with achieving the LEED Building Envelope commissioning points with an alternative compliance path using the requirements of the PHIUS verifier? It seems like an unnecessary duplication to ask the client to pay for a BECx agent and a Passive House verifier. Or am I missing something? I can't find any LEED... Read more

Has anyone here found an alternative to XPS for the void former?

A structural engineering contact was included in recent conversations about embodied carbon in insulation materials and brought to our attention that this is a common use for XPS that has nothing to do with its insulating properties. It is typically used where concrete is... Read more

Thank you to everyone who signed on to the Materials Pledge letter.  It was officially released on April 15th with 56 signatory firms.  The Materials Pledge will soon have a new home online and a way to continuously add more signatory firms.  I'm keeping a list for now and there are already four more firms who want to join.  I will let everyone... Read more

Conventional heating systems burn fossil fuels on the building site or use outrageous amounts of electricity.

BuildingGreen-Approved Heat Pumps

The best heat pumps solve both these problems and provide efficient cooling. BuildingGreen approves air-source heat pumps with minimum HSPF and SEER levels of 10 and 20, respectively.... Read more

Not sure if anyone is currently looking to hire someone, but I wanted to pass along info on Bohan Zhang in case anyone might be interested.  Bohan recently graduated from the GSD's MDes Energy and Environment program.  He also has an MArch degree, and I know took a number of courses in Real Estate and Finance at both MIT and Harvard.  I had him... Read more

Hello Everyone - we posted this to SAL, but also wanted to reach the Green Gurus folks!

To prepare for a co-creative workshop at the Environmental Design Research Association annual conference, "Health in All Places" our team ( myself, B. Sanborn, Penny Cole) is soliciting input via an all-questions-optional survey regarding ungendered... Read more

For questions and/or to be added to the Summer Summit waiting list, please email Jerelyn Wilson directly.

2019 Summer SDL Summit
Islandwood, Bainbridge Island, WA
July 31st- August 2nd, 2019

Welcome to the quiz portion of An Advocate’s Guide to Resilience Regulations!

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


1. Explain how U.S. municipalities are using codes to improve the resilience of the built environment in the face of worsening climate change.

2. Delineate five... Read more

I am still basking in the afterglow of this week's summit, and getting ready to share nuggets of wisdom with my colleagues at our all-staff next week. I was so immersed in the moment that documenting the outlines and choices presented for breakouts slipped my mind. Is there somewhere to access these slides to refresh my memory?

Thanks... Read more

You’ve probably heard that wood products are carbon neutral. You might also have heard that timber harvesting causes immense carbon emissions.

Which is it?

Could it be both?