On Thursday, Seattle-based Rushing hosted an open house for its new workspace. The mechanical and electrical engineering, and sustainability consulting firm, has moved to the third floor of 1725 Westlake Ave N., and is currently awaiting a LEED platinum certification for commercial interiors. In case you missed it, I’ve got some photos of the space - and the event - for you below.

Inside view of the space

Rae Anne Rushing in her new office

The ceiling

A wall of the different LEED points the space has targeted

Rushing also made handy little booklets that outline all the credits Rushing (again hopefully) achieved for LEED platinum. Each page in the booklet explains what Rushing did for each credit. For example, under Energy Use Measurement and Payment Accountability, the boooklet says Rushing installed submetering equipment to measure and recod gas and electricity use in the space. It also says a lease was negotiated where energy costs are paid by Rushing, and not paid in base rent.

Close up view of a couple LEED points

The food you missed!

Wired magazine’s Wired Science blog had a great post recently about Solyndra, a three-year old company that makes very out of the ordinary solar panels indeed. Instead of the typical panel we know and love (or hate) that are flat and mounted up towards the sun, these solar cells are cylindrical and look like a long tube. They also contain no silicon.

The panels are marketed towards offices. According to Solyndra’s Web site, wind blows through the tubes so no rooftop anchoring is required, making them a cost-effective business solar solution (wow, what a mouthful!) So far, the company says it has $1.2 billion in multi-year contracts in Europe and the U.S.

 For more information, see the Wired  post here. Or visit the New York Times here.

We're not in Kansas anymore, Toto!

This post is by Gary Nordeen of the Washington State University Extension Energy Program.

Do you really want this under your floor?

Essentially what it documented is when you have a vented crawlspace in a warm, humid climate the floor framing is prone to rot. In this climate, your house is often being mechanically cooled (which also cools the crawl space), warm, humid air enters the crawlspace through the vents and condenses on the cold framing members. Eventually the house may develop rot and mold problems. I agree in this climate scenario that closed crawlspaces are a great idea to maintain structural integrity. Also, if there are ducts in the crawl space, any duct losses are now contained inside the building. Note the radon differences between the two crawlspaces and keep in mind that Princeville, NC is considered a low risk radon location by EPA.

Since this construction method is catching on nationally, WSU Energy Program received funding to test houses in our state to determine if this is the way to go in the Pacific Northwest. Here is a description of the results from David Hales, Lead Researcher on this project:

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“We’ve recently completed research on sealed and vented crawlspaces in the Pacific Northwest. The results are not yet published but based on our experience with four homes in Vancouver and four in Moses Lake that we monitored for about 18 months, the sealed crawlspaces (without supply air but power vented to the outside) maintained very stable temperatures through the entire heating season in the 55 to 60 degree range. The crawl should be kept negative to the house. Based on tracer gas studies we found that in the typical vented crawl, approximately 40% of the house air came from the crawlspace in the winter. By power venting a sealed crawl (50 cfm 24/7 in 1000ft2) less than 6 percent of the house air came from the crawl. Because of higher dilution rates and additional factors radon levels at both sites were less than 2 piC/l in the vented crawls but at the same sites radon levels were from 12-16 piC/l (EPA states radon mitigation should happen when a house has radon levels of 4 picocuries per liter or higher) in the sealed crawls. From an energy standpoint there is a small penalty overall for the sealed crawl that gets worse if you actually add supply air to the space. If a cold floor is your primary concern, I would insulate the floor and not provide heat to the crawl. Over the life of the building this would be the most cost effective way to maintain a warm floor.

Based on this research we are preparing to make a recommendation to the Building Code Council that would allow conditioned crawls under some circumstances. However, in most areas of the Northwest they incur an energy penalty and an added expense that I don’t think is really justified. Some jurisdictions have been allowing them but a strict interpretation of the WA State Energy Code does not. I believe that if they are done they should be power vented to the exterior and should not have conditioned supply air directly introduced. I also think they should not use fiberglass batts for the perimeter wall insulation. Radon mitigation is a must.”

The power vented crawl may have an advantage from an IAQ perspective because as our testing showed, it is possible to substantially reverse the winter time stack effect and decouple the house from any contaminants that may be in the crawl. The problem with this is that it requires the continuous operation of an exhaust fan. If the fan fails and is not replaced, the IAQ may actually become worse because the air now entering the house does not benefit from the passive dilution that takes place in the vented crawl.

So it seems that from an energy efficiency and indoor air quality perspective unvented crawl spaces are not a benefit here but let’s not forget about the ducts. If you have ducts in a crawl space they leak - it’s just a matter of how much. Here’s a radical concept. Instead of moving your house around your ducts, why don’t you design your house with the ducts inside your house? Then duct leakage is not a problem. If you can’t get them inside your house make sure they are sealed well (with mastic, NOT duct tape) and test them with a DuctBlaster.
 
Finally, here is a statement we hear a lot: “I have a water problem in my crawl space so I’m going to seal it up and heat it.”  Fix the water problem or you will end up with a science project under your floor.

Readers, do you agree with Gary?

After a tumultuous year, the zHome project has started off on a new foot with its Monday groundbreaking. The project is a 10-unit townhome development in the Issaquah Highlands that uses smart design and technology to create all the energy it consumes. It plans have net zero carbon emissions and cut water use by 60 percent.

I first wrote about the project last December here when Noland Homes was the

Courtesy of David Vandervort Architects

builder on the project and planned to develop it at its own cost. A lot has changed since then: namely Noland dropped out and Howland Homes came on (and will develop it at its own cost). But the project has finally broken ground and, as Brad Liljequist, zHome project manager for the city of Issaquah, says in the project’s inaugual blog post (yes it has a blog here) it “takes my breath away a little bit” to be at this stage in the project’s life.

zHome has a nifty Web site that can answer all and any of your questions from what materials are being used to how they’re doing it to how to buy into it. For more information, visit it here.

Courtesy of David Vandervort Architects

This solar panel from the groundbreaking comes wrapped in a bow!

The latest rendering

Readers, I’m sorry I haven’t posted in a couple days here, but like I mentioned in an earlier post, September is CRAZY. Tuesday, that craziness was exemplified by my calendar, which had me rushing from the Urban Land Institute’s launch of the Quality

Busy, busy times!

Growth Alliance in downtown Seattle, to a panel discussion (that I moderated) in Bellevue, and back to our offices in Pioneer Square to write up the story. Whew.

In case you missed both those events (and the recommendations put out by the Western Climate Initiative to boot) here is a rundown for your viewing pleasure:

The Quality Growth Alliance. Anyone remember Reality Check in April? The huge event that got 250 big-wigs playing with Legos? At that event (DJC story on it here), I spoke with Jim Potter of Kauri Investments who told me it was a great planning exercise as long as the results didn’t fade away into the sunset. Well the alliance is the attempt of prominent groups - from the UW’s College of Architecture and Urban Planning to NAIOP - to make sure the results stick around and influence future planning policy. More info in my story in today’s DJC or at their Web site.

The Panel Discussion. In case you missed this one, it was a lot of fun. Hosted by SMPS, panelists represented various fields of the AEC community (architecture, engineering, construction) and were Eric Anderson of MulvannyG2, Jeffrey Cox of Triad Associates, Rae Anne Rushing of Rushing and Yancy Wright of Sellen Construction Co. Among some of the interesting tidbits:

• Collectively, panelists said sustainable or green design is changing so quickly, that as soon as you read about it, it’s old. If you want to know what’s going on you need to work to educate yourself. This is true for everyone, and especially for marketers.
• Marketing and public relations professionals, they said, need to be really careful about sounding really stupid. Oftentimes they (and I incidentally) get press releases that virtually make no sense. If you’re going to write about green systems or projects, understand it, otherwise you run the risk of major embarrassments (I can’t tell you how often I get press releases that tell me a product will get me 10 “Leeds” points).
• Green building doesn’t have to be more expensive if you start from the beginning and have the right leaders on board. If you start thinking about integrative design and green systems midway through a project, there’s a good chance it’s going to be more expensive.
• Everyone needs to be on board with green building, even those who have been in the industry for many years and are hesitant to change the way they work. Panelists said they need all disciplines at an eco-charette and that bringing and open mind really, really helps.
• Definitions aren’t clear and because everyone has different definitions…. it’s hard to understand what a word, be it ‘eco-charette,’ ’sustainability’ or ‘integrative design,’ means to a specific person. Define those definitions for your project, or your company.

Western Climate Initiative. And don’t forget yesterday’s announced recomendations by the Western Climate Initiative for a regional cap and trade system. If you want to learn more about this one, read the Seattle Times or the PI.

Also, if you’re looking for an interesting way to fill your Thursday evening, Patrick Bellew of Atelier Ten will speak at the downtown Seattle Library at 5:30.

That’s all for today folks. If I don’t thank you enough, thanks for reading!