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.Â
Related Stories
| Aug 9, 2012
Slideshow: New renderings of 1 WTC
Upon its scheduled completion in early 2014, One World Trade Center will rise 1,776 feet to the top of its spire, making it the tallest building in the Western Hemisphere.
| Aug 9, 2012
Slideshow: New renderings of 1 WTC
Upon its scheduled completion in early 2014, One World Trade Center will rise 1,776 feet to the top of its spire, making it the tallest building in the Western Hemisphere.
| Aug 9, 2012
DSGW Architects welcomes new employees
Three new employees located in DSGW's Duluth office.
| Aug 9, 2012
DMR Architects converts bank building to municipal court
The project consisted of a $4 million renovation to a 2-story building totaling 13,000-sf.
| Aug 8, 2012
BD+C wins six B2B journalism awards
BD+C wins two national awards, three regional awards, and a regional Graphical Excellence award.
| Aug 8, 2012
BIM’s future up in the cloud
The AEC industry is on the cusp of a still more significant evolution with cloud computing.
| Aug 8, 2012
Giants 300 Sports Facilities Report
BD+C's Giants 300 Top 25 AEC Firms in the Sports Facilities sector.
| Aug 8, 2012
Giants 300 Science & Technology Report
BD+C's Giants 300 Top 25 AEC Firms in the Science & Technology sector.
| Aug 7, 2012
Pioneering revival
Financial setbacks didn’t stop this Building Team from transforming the country’s first women’s medical school into a new home for college students.
| Aug 7, 2012
Shedding light on the arts
Renovating Pietro Belluschi’s Juilliard School opens the once-cloistered institution to its Upper West Side community.