Green Building Elements

AJC Architects have thought ahead to a hotter Utah in the sensible ideas incorporated into their  Wetland Discovery Point educational building that helps educate Utah schoolchildren about nature.

These are the green ideas in order of importance to sustainable design:

1. On-site solar panels for green electricity - to make net zero energy onsite;
2. Solar thermal collectors for hot water supply and radiant floor heating;
3. Radiant cooling via infloor cold water in the same circuits in summer; (great idea!)
   
4. 10-ft high trombe wall collects passive solar heat;
5. Butterfly roof for rainwater collection;
6. Rainwater collection used for toilets/landscaping;
7. Drought tolerant, native landscaping;
8. Maximimum openings for natural ventilation;
9. Low-water use fixtures and plumbing;

In addition there are the usual elements that garner so many LEED points:

1. 95% of the construction waste is recycled.
2. Use of FSC-certified woods and low VOC products.
3. High recycled content materials used throughout.

…and indeed, this building has gained LEED Platinum certification, the third to do so in Utah.

It’s a good example of the self-sufficient new design vernacular in sustainable design - including net zero solar power and the new butterfly roofs for rainwater harvesting for a water constrained future.

Because Utah, in the American Southwest, is an arid land and will be increasingly drought-prone as our hotter future heats up the region.

Via Jetson Green

U of Kansas grad students have just completed their chic Buffalo House at Springfield in Kansas City, designed with a very elegant approach to sustainability.

We are seeing more climate conscious design in architecture: In this case; the rain screen.

A skin over the house is designed to manage and harvest occasional heavy precipitation, to provide protection from premature decay from moisture intrusion.

I like the way the rain-screen is carried up over the roof and mounted flush with the photovoltaic solar panels on the roof for a sleek look while also protecting the building.

Like a skin over the building; this Cumuru wood cladding is designed to shed rain water separately from the structure of the building. Rain screens deter rainwater intrusion into walls - by shedding most of the rain and by incorporating storage to reuse the rainwater - which you can see below the doors here.

There’s 8 other sustainable features, as well.

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Rather than attacking the symptoms of moisture intrusion, rain screens tackle the source-the forces that drive water into the building shell. By neutralizing these forces, rain screens can withstand extreme environments. They appear to be effective in any climate and handle any weather condition short of a disaster.

All rain screens include the following elements:

• Vented or porous exterior cladding
• Air cavity (a few inches of depth is sufficient)
• Drainage layer on support wall
• Rigid, water-resistant, airtight, support wall

Integral gutters and downspouts are hidden behind the rain-screen. These then carry rainwater for storage in underground tanks.

The home also features passive solar heating through large expanses of south facing glass. These windows are protected from the summer sun with fixed sun louvers made of steel and Cumaru wood.

So as not to trap too much heat, low South-facing operable windows work in tandem with skylight vents in the north-facing roof-top pull hot air out of the top of the building for a thermal chimney effect.

For maximizing filtered daylighting, a three-level steel frame with milky glass inside encloses the staircase for spatial separation but spreading daylight between the rooms of the house.

The sustainable features are:

1. Enough rooftop photovoltaic solar panels for a net zero electricity supply (90-100%) for an average home.
2. One on-site 1.2 KW Windspire wind turbine that could produce about 20% of the energy an average home (550 kWh a month) assuming wind speed of at least 12 miles-per-hour year round.
3. Geothermal heat exchange between the house and the below-ground 55 degree temperatures year round, providing a constant starting point for both heating and cooling.
4. Epoxy coated gyp-crete floors for interior thermal mass to prolong passive heating and cooling
5. Passive solar design: low South-facing windows with sunlight access to thermal mass in the floor.
6. Heat-chimney effect created with roof ventilation in North skylights for expelling hot air
7. The framing wood was recycled from an ammunition plant.
8. Recycled materials in interior finishes such as the composite recycled paper countertops.

and of course

9. The rainwater reclamation using a wooden slat skin to keep water off the building and stored in underground tanks. Cumaru is one of the hardest woods on the planet and can be harvested sustainably.

But it comes from South America, so there is quite a carbon footprint getting it to Kansas City.

Images: Robert McLaughlin
Via Jetson Green

VisionDivision has a very innovative entry in the Design for the Children competition to design a sustainable and culturally responsible pediatric clinic in the hostile environment of the desert of East Africa. Here is what inspired their design:

Says VisionDivision; “When we saw this competition, we felt urged to create a proposal:

Insufficient water is one of the most severe problems in rural Africa. For many families it is extremely time consuming to collect and can easily start conflicts between…
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Even in a Greencentric city like Berkeley, locals and Bay Area visitors would be Green with envy when they see the just opened David Brower Center. It feels healthy just to walk through the Green down-to-the-bones building which combines advanced technology along with simple recycled materials.

When entering for their housewarming party we had a difficult time not noticing the soaring concrete walls which made us think more dot com than gallery. The fact that in creating a building with an oh- so-feathery carbon footprint (when compared to most structures) Principal Architect, Daniel Solomon included up to 70 percent slag in those walls. Read the rest of this entry »

With all the attention on energy efficiency in buildings and where all that energy comes from (renewable sources or coal-fired electric plants), there is one resource that seems to be ignored - water.  And the really scary part is that although we can generate more energy from various sources, the water that is on the planet and in the atmosphere is all we have to work with - and we know it.

You may be thinking that there is plenty of water around, but when you get down to the science of the amount that is readily available for human consumption, the picture changes.

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What do get when you mix four of the Bay Area’s top green stars, a LEED certified location, lunch and corporate sponsor wanting to spread its green wings? The spirited Sustainable Symposium sponsored by Ace here in glorious San Francisco. The symposium, in short, brought some energetic and often useful ideas from the knowledgeable and spry panel (not to mention moderator and Chicago Ace Hardware store owner Lou Manfredini) and created solid dialogue in what could have been one of another “How to green this and that discussion.”

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Leave it to the State Compensation Insurance Fund, the quasi-public workers’ compensation insurer based in San Francisco, to bring more green building to the Bay Area. Okay, we’re stretching it a little to call Vacaville the Bay Area but what’s a few miles for a true green building.

The fact that the $77 million green campus that consists of three 85,000-square-foot buildings diverted more than 20 percent of the building materials from the nasty old landfills. Much of those materials included concrete and cork and rubber flooring. Not only did the architect HOK and Milpitas-based Devon Construction reduce waste by using recycled building materials, but State Fund diverted a whopping 75 percent of construction waste away from landfills to recycling vendors.

This campus which expects to receive LEED Silver certification early next year, hit a big on the energy savings front with solar panel system, energy-efficient light fixtures, lamps, heating and cooling systems and other electrical equipment; and in the high-tech world they added “server virtualization” technology that reduces the number of servers needed to support the facility. The Green IT people must love that.

We (and probably most of the 750 workers) applaud the use of various low-emitting materials such as adhesives, paints and carpets. They also significantly reduced the building’s water footprint by incorporating low-flow toilets, waterless urinals, and an irrigation system using non-potable water.

We say that that is $77 million dollars well spent.

Photo credit: Steve Proehl

Ever wanted to know exactly how much electricity and water you were using in your home or office right now?  With Advanced Telemetry’s new EcoView system, you can learn that and much more.

The EcoView system provides information on a home’s or small office’s energy and water consumption rates, trends, identifies energy drains, and tracks goals.  The system is completely wireless and has a keypad display or can be viewed on a home computer.  With the information provided by this system, home and small business owners can better track energy use and take measures to reduce it.  Read the rest of this entry »

Mostly when we talk about LEED certified buildings we think about office buildings or government centers but here we scope out another first. The Advanced Data Center building in Sac-town already became the first data center to be pre-certified LEED Platinum. Surprised? You bet. Most people think that these data centers with all of the computers are huge energy hogs, and they’re right. That’s why the firm had to work extra hard to create efficient cooling systems. They designed a cooling system called an “air-side economizer” that reduces energy use through careful airflow, and water-flow design and to utilize outside air because the temperature and humidity reamin in the correct range for 75% of the year.

Besides being so cool with the air side efficiency, we like their H2O technology savings effort. They utilize recycled (grey) water from a local municipal water system and captured roof rainwater for landscaping, restrooms and cooling tower backup. They even went so far as to install low- and even better no-water fixtures in restrooms.

Someone was either thinking about LEED points, just doing the right thing or perhaps tax breaks but the fact that the ADC built the location on a brownfield in the former McClellan Air Force Base shows some real foresight and green thinking. It didn’t even scare them that the site contains polluted groundwater 350 feet below the building.

Perhaps the military should take a clue from companies such as ADC when considering how to use (or abuse) the land that they seem to be protecting.

This post, like the masses of crowds, makes its way inside the just opened Academy of Sciences Museum. And why not as the Museum just became the largest LEED Platinum building in the world as well as the world’s most sustainable museum building. Take that Louvre.

As a Green building, the designers highlighted the new qualities but the also the previously used materials. What could be more famous then the seahorse railing and the colorful original tiles that surround the old favorite alligator swamp exhibit? Both the unique decorations are back. Okay, we’ll get to the bigger stuff.

One of the biggest challenges for this building was to optimize the natural light from the 200 some odd roof skylights to reach the living rainforest and coral reef. Unfortunately no LEED for Aquariums exists so the designers had balance radical ideas with practicality because they could take a chance that the wildlife wouldn’t survive.

The new aquariums displays contain twice as much water as the original, however they use less potable water because of filtration and recycling systems that purify water piped in from the Pacific Ocean. They purify the nitrate wastes using natural systems, ensuring that aquarium water can be recycled and reused. We also liked that they used 50% recycled content for the aquarium’s concrete.

Of course, everything can’t be perfectly green in a building. We cornered Water Planet designer Tom Hennes who (together with Urban A&O) designed the exhibit’s innovative wall treatments, about things that he would have liked to changed in regard to making the aquariums more green he said,  “It’s hard to live without fiberglass.”

Even with the fiberglass we’re happy to be living with the fishes in this extraordinary green icon.