The addition of air curtains in the International Green Construction Code (IgCC), the new comprehensive high performance green building code, promises energy and construction cost savings for commercial, industrial and institutional buildings.
Specifying air curtains as energy-saving, cost-cutting alternatives to vestibules in 3,000-square-foot buildings and larger has been a recent trend among consulting engineers and architects. However, many times specifications are blocked by local jurisdictions that have adopted the International Energy Construction Code (IECC), which doesn't yet sight air curtains as vestibule alternatives.
Thus, the newly-enacted IgCC, which is scheduled for March 2012 publishing, now provides an approved overlay of green construction products to the base code IECC, which is overseen by the International Code Council, the Washington-based organization responsible for providing minimum safety, sustainability and affordability building codes and standards.
Recent proposals to the IgCC by the Air Movement and Control Association International (AMCA), Arlington Heights, Ill., helped establish air curtains as a vestibule alternative with the stipulation that they're tested in accordance with ANSI/AMCA Standard 220-05, "Laboratory Methods of Testing Air Curtains for Aerodynamics Performance Ratings."
Also helpful in the code modification effort were recent studies proving air curtains as 10% more energy-efficient than vestibules. The three-month research study “Air Curtains: A Proven Alternative to Vestibule Design” used second-party validation from research/validation consultant, Blue Ridge Numerics, Charlottesville, Va., with certified results from proven computational fluid dynamics (CFD) analysis.
Besides energy savings, vestibules, especially in retail settings, consume anywhere from 25 to 250 square feet of usable retail space and carry construction costs ranging from $3,750 to $37,500, based on an average of $150/square feet construction costs.
Meanwhile air curtain proponents will continue to present energy efficiency data to code committees, in hopes of instituting the vestibule alternative measure into the IECC. The next meeting on the subject is scheduled in January 2013.
Related Stories
Sustainability | Aug 4, 2022
To reduce disease and fight climate change, design buildings that breathe
Healthy air quality in buildings improves cognitive function and combats the spread of disease, but its implications for carbon reduction are perhaps the most important benefit.
Multifamily Housing | Aug 4, 2022
Faculty housing: A powerful recruitment tool for universities
Recruitment is a growing issue for employers located in areas with a diminishing inventory of affordable housing.
Multifamily Housing | Aug 3, 2022
7 tips for designing fitness studios in multifamily housing developments
Cortland’s Karl Smith, aka “Dr Fitness,” offers advice on how to design and operate new and renovated gyms in apartment communities.
Building Materials | Aug 3, 2022
Shawmut CEO Les Hiscoe on coping with a shaky supply chain in construction
BD+C's John Caulfield interviews Les Hiscoe, CEO of Shawmut Design and Construction, about how his firm keeps projects on schedule and budget in the face of shortages, delays, and price volatility.
Codes and Standards | Aug 3, 2022
Some climate models underestimate risk of future floods
Commonly used climate models may be significantly underestimating the risk of floods this century, according to a new study by Yale researchers.
| Aug 3, 2022
Designing learning environments to support the future of equitable health care
While the shortage of rural health care practitioners was a concern before the COVID-19 pandemic, the public health crisis has highlighted the importance of health equity in the United States and the desperate need for practitioners help meet the needs of patients in vulnerable rural communities.
Reconstruction & Renovation | Aug 3, 2022
Chicago proposes three options for Soldier Field renovation including domed stadium
The City of Chicago recently announced design concepts for renovations to Soldier Field, the home of the NFL’s Chicago Bears.
Codes and Standards | Aug 2, 2022
New tools help LEED projects reach health goals
The U.S. Green Building Council now offers tools to support the LEED Integrative Process for Health Promotion (IPHP) pilot credit.
Market Data | Aug 2, 2022
Nonresidential construction spending falls 0.5% in June, says ABC
National nonresidential construction spending was down by 0.5% in June, according to an Associated Builders and Contractors analysis of data published today by the U.S. Census Bureau.
K-12 Schools | Aug 1, 2022
Achieving a net-zero K-12 facility is a team effort
Designing a net-zero energy building is always a challenge, but renovating an existing school and applying for grants to make the project happen is another challenge entirely.
