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
| Nov 11, 2014
Must see: Artist pairs up Hollywood icons with famous modern architecture
In his latest series, Federico Babina illustrated 17 iconic Hollywood personalities, from Marilyn Monroe to Michael Caine, interacting with famous 20th century homes.
| Nov 11, 2014
Renzo Piano's third building at London Bridge Quarter approved, will be built adjacent to the Shard
Renzo Piano Building Workshop has been granted planning approval for its residential building at London Bridge Quarter—a 26-story apartment tower dubbed Feilden House.
| Nov 10, 2014
5 guiding principles for solving airflow issues in open-plenum office spaces
Although architecturally appealing, exposed ceilings can create unwanted drafts and airflow problems if not engineered correctly. McGuire Engineers' Bill Stangeland offers tips for avoiding airflow issues on these projects.
| Nov 10, 2014
Clemson, Parsons architecture education programs honored for innovation, long-term impact
The architecture programs at Parsons The New School for Design and Clemson University have been selected as 2014 NCARB Award recipients for developing innovative curricula that merge practice and education.
| Nov 10, 2014
Herzog & De Meuron unveils plan for National Library of Israel
The library’s new home will be a completely new building in Jerusalem, and will combine the functions of a central research center, a venue for indoor and outdoor cultural and educational activities, and a place for digital experience.
| Nov 10, 2014
Hotel construction pipeline hits five-year high
The hotel construction pipeline hit a five-year high in the third quarter, clocking in at 3,516 projects and 443,936 rooms, Lodging Econometrics reports.
| Nov 7, 2014
Arts college uses creative financing to build 493-bed student housing
Many states have cut back funding for higher education in recent years, and securing money for new housing has been tougher than ever for many colleges and universities. A recent residence hall project in Boston involving three colleges provides an inspiring example of how necessity can spawn invention in financing strategies.
| Nov 7, 2014
Prefab helps Valparaiso student residence project meet an ambitious deadline
Few colleges or universities have embraced prefabrication more wholeheartedly than Valparaiso (Ind.) University. The Lutheran-based institution completed a $27 million residence hall this past summer in which the structural elements were all precast.
| Nov 7, 2014
World's best new skyscraper: Sydney's vegetated One Central Park honored by CTBUH
The Jean Nouvel-designed tower tops the list of 88 entries in the 13th annual Council on Tall Buildings and Urban Habitat Awards.
| Nov 7, 2014
NORD Architects releases renderings for Marine Education Center in Sweden
The education center will be set in a landscape that includes small ponds and plantings intended to mimic an assortment of marine ecologies and create “an engaging learning landscape” for visitors to experience nature hands-on.