Championing the
Changemakers

"The man with one watch knows what time it is; the man with two is never sure."   --Segal's Law

We recently purchased two indoor air quality meters in the $200-$300 range and find that they never agree, not even close. I would like to find out what other people's experiences have been, and if they have tested affordable models that... Read more

Friends of EPIC –

Hey, everyone. As some of you might have heard, we’ve been working for a while with Autodesk to get c.scale (the data model behind EPIC) built into Forma – Autodesk’s AI-powered planning tool. Forma is packaged within Autodesk’s AEC collection and most firms using Revit should already have access. This integration is... Read more

Prefabricated, or modular, buildings can provide environmental advantages over conventionally constructed buildings. They are built in factories where manufacturing and cost can be tightly controlled, so materials are kept out of the elements, there is less waste, and thermal properties and air sealing can be enhanced. There are also fewer... Read more

Hello all, excuse the blast and the short timeline -- while not explicity sustainability-related, this is a great way to connect with the future of the profession, and can be a great opportunity for SDL firms on the west coast (a number of SDL firms already participate), specifically in Tacoma, Olympia, San Francisco, Sacramento, or San Diego.... Read more

We have an MEP engineer that is calculating peak loads at about 6 times passive house levels on a large commercial building that is at or near passive house levels of insulation and air infiltration. We suspect one reason is that he is figuring a 50% efficiency level for the ERV. We are showing him ERV systems with 80-90% efficiency, but they... Read more

Hi all,

We are taking a deep look at green accreditations within our firm. Gone are the days when we could say: "our staff is XX% LEED APs!" as a metric of firm progress. Here are a few questions we are asking ourselves, and I'm wondering how you approach this in your firms:

This article just came up in my news feed. I thought you’d all like to read it. I will point out that C&D-specific MRFs have told me that they are really good at single-stream C & D waste, as long as the drywall is pulled out.  Any drywall in a single-stream C & D dumpster ends up in the landfill. Drywall just breaks apart and gets... Read more

Hi all, has anyone come across a comprehensive (and recent) study looking at how long buildings actually last (beyond Stewart Brand)? I know of plenty that look at the benefits of reuse, but none that look at existing building stock and how much has been reused vs. demolished. 

As we start looking at embodied carbon metrics, I can't help... Read more

Hey SDL,

I'm curious if anybody out there has developed specification language requiring a certain level of airtightness (as assessed via one or a series of blower door tests) for a commercial project when it is not going for a Passive House certification and a blower door test is not required by code--basically, something in the... Read more

Following up on the Decarbonizing Existing Building: Envelope + MEP Solutions Integrative Design Jam, a cohort of us determined a "Decision Making Tree Toolkit" that begins to classify decisions into and "if/then" framework using region, market, climate, scale of intervention, and other factors would be useful in helping us collectively move... Read more

Caseworks can be made from unsustainable wood and other materials, and with adhesives and finishes that offgas formaldehyde and other hazardous compounds.

BuildingGreen-Approved Casework

Approved caseworks are:

As if you weren't worrying enough already, here's a little something that I ran across through monitoring activity on the American Society of Healthcare Engineers discussion boards:  https://www.id-hub.com/2018/10/17/hospital-plumbing-reservoir-resistance-interview-amy-mathers/, "Hospital Plumbing as a Reservoir for Resistance".  This is both a... Read more

Welcome to the quiz portion of LEED vs. Green Globes: A Definitive Analysis

Note: If you are taking this quiz as a member of LEEDuser, please take the quiz here.

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


1. Highlight the most significant differences between LEED and Green... Read more

I'm sure if I hop in the way back machine I could look in the forums and find old threads on LEED GA and LEED AP study resources, but I also know that material comes in and out of date. Has anyone found a good, current solution for firmwide LEED study materials?

We used to have some GBES resources, but those are intended to be person-... Read more

Hi folks,

On today's call James Peterson will be introducing a conversation about how COVID might have changed our ways of working.

If there's time afterwards, we can take a look at this draft article from the USGBC research team. They're interested in our input on how we might want to analyze the info on electrification rates in... Read more