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
| Apr 19, 2012
The 10 mistakes most likely to get you sued
The California Chamber of Commerce has produced a white paper cataloging the top 10 mistakes most likely to get a company sued. While a few of the laws cited apply specifically to California, some of them are federal and may apply in your state.
| Apr 19, 2012
Holcim cement plants recognized at PCA Spring Meeting
The Holly Hill plant received the PCA’s Chairman’s Safety Performance Award in recognition of their exceptional health and safety programs. The Theodore plant received the Environmental Performance Award in recognition of the steps they take beyond those required by laws, regulations and permits to minimize their impact on the environment.
| Apr 19, 2012
KTGY Group’s Arista Uptown Apartments in Broomfield, Colo. completed
First of eight buildings highlights unique amenities.
| Apr 19, 2012
Nauset begins work on $20M Joint Forces HQ at Hanscom AFB
3D imaging key to project timetable and cost containment.
| Apr 19, 2012
HBD Construction names Steven Meeks vice president
Meeks will provide expertise for the company in its many diverse areas of construction projects including health care, senior living, education and retail.
| Apr 18, 2012
Lafarge moving North American headquarters to Illinois
Lafarge CEO John Stull says the factors in their decision were location in the Midwest and area transportation.
| Apr 18, 2012
Positive conditions persist for Architecture Billings Index
The AIA reported the March ABI score was 50.4, following a mark of 51.0 in February; greatest demand is for commercial building projects.
| Apr 18, 2012
Syska Hennessy re-launches Information and Communication Technology practice
The ICT practice will focus a blend of products including Information Technology, Security, Audiovisual, Building Automation, Fire Life Safety, Medical Communications and Intelligent Building Systems.
| Apr 18, 2012
Perkins+Will designs new complex for Johns Hopkins Hosptial
The Charlotte R. Bloomberg Children’s Center and the Sheikh Zayed Tower create transformative patient-centric care.
| Apr 18, 2012
BBS Architects & Engineers acquires Ward Associates
The merged companies’ on-going project portfolio valued at $220 million.