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
| Mar 6, 2012
BLT Architects promotes two to associate
Architect Nicole Dress and interior designer Jessica Moser acknowledged for excellence.
| Mar 6, 2012
Joliet Junior College achieves LEED Gold
With construction managed by Gilbane Building Company, Joliet Junior College’s Facility Services Building combines high-performance technologies with sustainable materials to meet aggressive energy efficiency goals.
| Mar 5, 2012
Tishman constructing new courthouse in Philadelphia
Construction is underway for the Pennsylvania Department of General Services’ 510,000-sf facility.
| Mar 5, 2012
Perkins Eastman pegs O’Donnell to lead K-12 practice
O’Donnell will continue the leadership and tradition of creative design established by firm Chairman and CEO Bradford Perkins FAIA, MRAIC, AICP in leading this market sector across the firm’s 13 offices domestically and internationally.
| Mar 5, 2012
Moody+Nolan designs sustainable fire station in Cincinnati
Cincinnati fire station achieves LEED Gold certification.
| Mar 5, 2012
Gilbane Building Co. wins top honors at ASA Houston awards ceremony
Gilbane was also named General Contractor of the Year for the seventh time in 11 years and won the inaugural Safety Program of the Year award.
| Mar 5, 2012
Franklin Institute in Philadelphia selects Skanska to construct new pavilion
The building has been designed by SaylorGregg Architects and will apply for LEED Silver certification.
| Mar 2, 2012
By the Numbers
66 skyscrapers to built in China over six years; 1,000 questions in the Modern Architecture game; 21,000 new jobs.
| Mar 1, 2012
Intelligent construction photography, not just pretty pictures
Our expert tells how to organize construction progress photos so you don’t lose track of all the valuable information they contain.