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
| Jul 8, 2013
Learn from the world’s fastest animal: speed isn’t everything
Every schoolchild knows that the cheetah is the world’s fastest land animal—70 mph, no sweat. And, as we all know from National Geographic television documentaries, it is speed that makes Acinonyx jubatus such a fearsome hunter, right?
| Jul 3, 2013
Mid-year special: Top 13 stories for 2013 (so far)
Every six months, we like to take a look back at the stories that generated the most interest from our readers. Here's a roundup of the top 13 articles on BDCnetwork.com for the first six months of 2013.
| Jul 3, 2013
World's biggest freestanding building opens in China
Measuring a stout 100 meters high, 500 meters long, and 400 meters wide, the New Century Global Centre in the Tianfu New District of Chengdu, China, is officially the world's largest freestanding building.
| Jul 3, 2013
Mall of America will double in size after $2.5 billion expansion
The nation's largest indoor mall will undergo a $2.5 billion, 10-year expansion project that will add attractions like an NHL-sized skating rink and an indoor water park.
| Jul 3, 2013
Architects team with HUD to promote 'Rebuild By Design' competition for Hurricane Sandy recovery effort
The American Institute of Architects (AIA) today announced a communications campaign urging its membership to enter the “Rebuild by Design” multi-stage regional design competition announced by Department of Housing and Urban Development (HUD) Secretary Shaun Donovan on June 20.
| Jul 2, 2013
LEED v4 gets green light, will launch this fall
The U.S. Green Building Council membership has voted to adopt LEED v4, the next update to the world’s premier green building rating system.
| Jul 1, 2013
Firestone Building Products Company LLC Announces Sustainability Report
Firestone Building Products Company, LLC, the leading manufacturer of superior “Roots to Rooftops” products for commercial building performance solutions, today announced the release of its 2012 Sustainability Report. The report, the first for Firestone Building Products Company, covers the fiscal 2012 year and is available for download at firestonebpco.com.
| Jul 1, 2013
LEGOLAND builds 12-foot replica of One World Trade Center
The LEGOLAND Discovery Center Westchester in Yonkers, N.Y., celebrated the completion of a LEGO replica of One World Trade Center by lighting the 12-foot-tall, 100-pound model.
| Jul 1, 2013
Report: Global construction market to reach $15 trillion by 2025
A new report released today forecasts the volume of construction output will grow by more than 70% to $15 trillion worldwide by 2025.
| Jul 1, 2013
Elizabeth Chu Richter, FAIA, elected 2015 AIA President
Delegates to the American Institute of Architects (AIA) national convention in Denver elected Elizabeth Chu Richter (AIA Corpus Christi) to serve as the 2014 AIA first vice president/president-elect and 2015 AIA president.