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 SDLers! I hope early fall is finding you well.

There is a current opportunity to make a difference in the campaign to reduce use of toxic flame retardants.

Arlene Blum and the Green Science Policy Institute, whom many of you know, are currently organizing a campaign of support for the CA State Fire Marshal's proposal to allow... Read more

Hello Gurus,

I have a client (bldg owner) who has asked me to recommend a list of firms who have the internalized resilient design in their practice.

They are *not* asking for resiliency consultants right now, but for firms that they might hire for "regular" capital projects, but since resiliency is high on their priorities, they... Read more

Hi Everyone - I hope this isn't a repeat topic. We are starting to get familiar with TallyCAT at SAR+ and have a few people testing our projects in it. Is anyone willing to help us troubleshoot or share lessons learned? We're running into a few errors and wonder if our Revit models and workflow are the issue, or if we need to be doing something... Read more

CEUs are available for reading all the building-envelope product guides and primer. Click here to learn more and take the quiz.

Standard spray polyurethane foam (SPF) insulation is made using blowing agents with extremely high global warming potential (GWP), which can cancel out much of the potential energy savings from use over its life... Read more

All,

I recently met Sahil Tadwalkar who is a Stanford MS Candidate in Civil Engineering. He and his group are interviewing design and construction industry professionals to understand issues and challenges around specifying and using low carbon solutions on projects. Interesting stuff! I encourage you to contribute by setting up an... Read more

Hi Carbon Working Group,

It’s been a while since our last online meeting on 3/31 –- admittedly, a bit too long -- so I wanted to share some updates.  You might have seen Candice Pearson’s 5/13 post about the structure of the Contractor’s Commitment and how it’s evolving into a set of guidelines available not only to our SCL Group but to... Read more

On a large sports project, we worked with the structural engineer to spec low carbon / high SCM concrete mixes. Much of the floor area will be sealed and polished concrete, and a concrete sub is pushing back on the SCMs saying they should not be above 20% (with a preference for 0%) for the polish to finish properly, per the manufacturer. Anyone... Read more

I'm sure most (if not everyone) is aware that LEEDv5 is under public review until May 20, 2024. I know I need to make time to flip through it, review, and comment, but I'm having a heckuva time protecting the time in my calendar to do that. Anyone interested in joining me for a 60 - 90 minute meeting to do this together as an accountability... Read more

Colleagues:

I "lurk" on the list serve of the American Physical Plant Administrators.  I wanted to share a posting from that forum:

Hi All,

Two questions here: wondering if any Universities in the Pacific Northwest have a thermal comfort standard they adhere to for new building design on campus? UBC is currently undertaking... Read more

Hi folks,

I hope you've seen the plug to sign onto the letter that's generated a flurry of messages on Green Gurus--I also emailed it out directly to everyone. We've got lots of architects on board, and a handful of engineers, but I think we just have one contractor so far (Thanks Theresa!)--it would be really awesome to have more.

Hi everyone, on our SDL Regional Leaders call today we touched on how different offices are engaging with the Youth Climate Strike on Sept 20, and I offered to share a few resources that we've developed:  

1) Here is our public-facing official statement/endorsement: https://www.vmdo.com/architecture-blog/vmdo-youth-climate-strike/?fbclid... Read more

Hi Everyone!  About ten days ago, Megan Zack posted a note announcing her new role as Chief Sustainability Officer at Wight & Company. (Yay!)  I'm so delighted that she will be stepping into this leadership role at Wight to shepard the firm in the next chapter of their journey in sustainability. 

I wanted to take a moment to say... Read more

The position for my replacement has been posted. Please share within your networks. Thanks!

http://www.fxcollaborative.com/profile/9/careers/

Welcome to the quiz portion of The Hidden Science of High-Performance Building Assemblies.

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


1. Define hygrothermal pressure and explain what it requires of water, air, and thermal barriers in high-performance assemblies.
2. Explain... Read more