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
| Aug 11, 2010
Modest rebound in Architecture Billings Index
Following a drop of nearly three points, the Architecture Billings Index (ABI) nudged up almost two points in February. As a leading economic indicator of construction activity, the ABI reflects the approximate nine to twelve month lag time between architecture billings and construction spending.
| Aug 11, 2010
Architecture firms NBBJ and Chan Krieger Sieniewicz announce merger
NBBJ, a global architecture and design firm, and Chan Krieger Sieniewicz, internationally-known for urban design and architecture excellence, announced a merger of the two firms.
| Aug 11, 2010
Nation's first set of green building model codes and standards announced
The International Code Council (ICC), the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), the U.S. Green Building Council (USGBC), and the Illuminating Engineering Society of North America (IES) announce the launch of the International Green Construction Code (IGCC), representing the merger of two national efforts to develop adoptable and enforceable green building codes.
| Aug 11, 2010
David Rockwell unveils set for upcoming Oscar show
The Academy of Motion Picture Arts and Sciences and 82nd Academy Awards® production designer David Rockwell unveiled the set for the upcoming Oscar show.
| Aug 11, 2010
More construction firms likely to perform stimulus-funded work in 2010 as funding expands beyond transportation programs
Stimulus funded infrastructure projects are saving and creating more direct construction jobs than initially estimated, according to a new analysis of federal data released today by the Associated General Contractors of America. The analysis also found that more contractors are likely to perform stimulus funded work this year as work starts on many of the non-transportation projects funded in the initial package.
Museums | Aug 11, 2010
Design guidelines for museums, archives, and art storage facilities
This column diagnoses the three most common moisture challenges with museums, archives, and art storage facilities and provides design guidance on how to avoid them.
| Aug 11, 2010
Broadway-style theater headed to Kentucky
One of Kentucky's largest performing arts venues should open in 2011—that's when construction is expected to wrap up on Eastern Kentucky University's Business & Technology Center for Performing Arts. The 93,000-sf Broadway-caliber theater will seat 2,000 audience members and have a 60×24-foot stage proscenium and a fly loft.
| Aug 11, 2010
Citizenship building in Texas targets LEED Silver
The Department of Homeland Security's new U.S. Citizenship and Immigration Services facility in Irving, Texas, was designed by 4240 Architecture and developed by JDL Castle Corporation. The focal point of the two-story, 56,000-sf building is the double-height, glass-walled Ceremony Room where new citizens take the oath.
