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Posts Tagged: green building


25
Jan 12

Living Building Challenge

Could the Living Building Challenge soon be the new industry standard for green building?

 

 

Over recent years, the U.S. Green Building Council’s LEED program has emerged as the industry standard for rating green buildings. Though the program has been considered widely successful, there are many in the A/E/C community who have stressed that LEED simply does not go as far as it could. From these green idealists, the movement behind the Living Building Challenge was born.

 

What if every single act of design and construction made the world a better place? That question is what the Living Building Challenge (LBC) poses to all involved in the future of green building. The LBC was founded with the sole purpose of creating a higher level of sustainable building by expanding and improving upon current standards of green design and construction.

 

One of the main proponents behind the LBC is Jason McLennan, LEED AP, a Canadian-born architect who was involved with LEED from its early onset. McLennan, who served as Project Manager in the first 10 pilot LEED projects, began outlining the concepts behind living buildings in the late 1990s. By the mid 2000s he began devising the living building idea into a construction standard. In 2006, McLennan brought the intellectual property of the Living Building Challenge to the Cascadia Green Building Council and from this, later formed the International Living Future Institute (IFLI).

 

 

The ILFI describes the Living Building Challenge as “a philosophy, advocacy platform, and certification program.” The LBC founded its standards around seven “petals” which are: site, water, energy, heat, materials, equity and beauty. The first five of the seven petals match up with LEED’s current credit structure. Unlike LEED, however, teams cannot choose which petals to highlight, since there are no credits and just prerequisites.

 

The materials component seems to be the hardest petal to comply with since the LBC has a “Red List” of materials that cannot be used in any form of a project. However, individuals who have been involved in early LBC projects, like Stan Richardson, feel that “The materials component is the hardest to comply with, and it takes more time up front, but it will eventually be overcome.” In fact, there are hopes that manufactures will rise to the occasion and produce more materials that meet the Red List requirements.

 

 

So, the question remains. Will living buildings eventually replace the LEED program as the standard rating system for new green buildings? The answer is more than likely no. Most experts hope the LBC will emerge as a complimentary and not competitive program to LEED. In fact, according to architect  Dan Hellmuth, AIA “LEED is trickier for smaller projects and is better for $2 million and higher projects.” Pilot projects for the LBC have used LEED Platinum as a baseline and aimed for the LBC as the ideal goal.

 

For more information on the Living Building Challenge visit their website, or watch a few feature clips below.


22
Dec 11

Block 21 Silver LEED Certified

Block 21 - Austin, Texas

Click to view more photos of Block 21

 

At the heart of Austin’s ultra-hip 2nd Street District, mixed-use high-rise development Block 21 celebrated its first anniversary this month. The development consists of a 37-story, 1-million-square-foot build­ing anchored by the W Austin Hotel and Residences at Austin. It has provided a new home for Austin City Lim­its Live and includes restaurants, a spa and commercial office space.

 

Aware of Austin’s dedication to green building, the owners (Stratus Properties and the Canyon John­son Urban Fund II) built the development with a “goal of combining high style with a sustainable urban lifestyle and reduced environmental footprint.” Their efforts were rewarded recently, when they received news that the development had been awarded SILVER certification under the LEED for New Construction by the Green Building Certification Institute.

 

View a time lapse video of the W Hotel construction:

 

Some impressive facts that contributed to this award are included in the Block 21 Sustainability Case Study prepared by the owners.

 

Commuting

Folks are only a few blocks away from six different bus stops, where an astounding 420 rides per day are accessible. Plenty of bike storage (for residents) and bike racks are available, alternative transportation is promoted through discounts on valet for guests, and residents receive complementary Car-2Go memberships. If your destination is anywhere in the downtown area, there is always the option to simply walk.

 Block 21 - Austin, Texas

Building Design

The architectural design was careful to avoid dark-colored, non-reflective, heat absorbing materials in order to avoid the Urban Heat Island (UHI) effect, which results in warmer ground level conditions, higher energy usage and compromised air quality. In order to prevent UHI, parking is included underground, all paved surfaces are made of light-colored and reflective materials, and the roof is made of highly-reflective roofing material.

 

Water

Water conservation was highly prioritized by the owners and the design team. High-performance toilets, showerheads and low-flow lavatory fixtures are used in the guestrooms, residences and hotel restrooms resulting in impressive interior water savings. Outdoors, the landscaped areas use drought-resistant plants, which results in massive water savings.

 

Energy

High performance light­ing, glazing, and insulation were used in the design to reduce energy use and air conditioning loads. LED lights are used in at ACL Live, which offer huge energy savings while maintaining high quality lighting expected at such a venue. A Heating, Ventilation and Air Conditioning (HVAC) and refrigeration system was installed to “eliminate ozone-depleting refrigerants while enhancing energy per­formance.”

 

Materials

The Block 21 design team was sure to recycle from the beginning of the project and continues to do so. Seventy-five percent of construction debris was recycled, avoiding a certain trip to the next landfill. Recycling receptacles for plastics, metals, paper, cardboard and glass are provided to all building occupants.

 

Congratulations to the Block 21 Design Team and their Silver LEED achievement!

 

Design Architect
Andersson-Wise Architects
 
Architect of Record
BOKA Powell

 

Structural Engineer
Thornton Tomassetti

 

Civil Engineer
Bury+Partners

 

Mechanical, Electrical, Plumbing Engineer
JJA Inc.

 

Interior Design
Stratus Properties Inc.
Landscape Architect
Talley Associates

 

Lighting Design
Horton Lees Brogden Lighting Design

 

Sustainable Design / LEED® Consultant
Center for Maximum Potential Building Systems

 

Commissioning Authority
ACR Engineering Inc.

 

Contractor
Austin Building Company

 

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