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
Building Team | Apr 22, 2022
EarthCam Adds Senior Leadership Roles to Facilitate Rapid Growth
EarthCam today announced several new leadership positions as it scales up to accommodate increasing demand for its webcam technology and services.
Architects | Apr 22, 2022
Top 10 green building projects for 2022
The American Institute of Architects' Committee on the Environment (COTE) has announced its COTE Top Ten Awards for significant achievements in advancing climate action.
Mixed-Use | Apr 22, 2022
San Francisco replaces a waterfront parking lot with a new neighborhood
A parking lot on San Francisco’s waterfront is transforming into Mission Rock—a new neighborhood featuring rental units, offices, parks, open spaces, retail, and parking.
Legislation | Apr 21, 2022
NIMBYism in the Sunbelt stymies new apartment development
Population growth in Sunbelt metro areas is driving demand for new apartment development, but resistance is growing against these projects.
Architects | Apr 21, 2022
A conversation with architect Robert A.M. Stern
The architect Robert A.M. Stern discusses his newly published memoir that touches on his childhood in New York and 50-plus-year career.
Building Team | Apr 20, 2022
White House works with state, local governments to bolster building performance standards
The former head of the U.S. Green Building Council says the Biden Administration’s formation of the National Building Performance Standards Coalition is a “tremendous” step in the right direction to raise building performance standards in the U.S.
Market Data | Apr 20, 2022
Pace of demand for design services rapidly accelerates
Demand for design services in March expanded sharply from February according to a new report today from The American Institute of Architects (AIA).
Multifamily Housing | Apr 20, 2022
A Frankfurt tower gives residents greenery-framed views
In Frankfurt, Germany, the 27-floor EDEN tower boasts an exterior “living wall system”: 186,000 plants that cover about 20 percent of the building’s facade.
AEC Tech | Apr 19, 2022
VDC maturity and the key to driving better, more predictable outcomes
While more stakeholders across the AEC value chain embrace the concept of virtual design and construction, what is driving the vastly different results that organizations achieve? The answer lies within an assessment of VDC maturity.
Healthcare Facilities | Apr 19, 2022
6 trends to watch in healthcare design
As the healthcare landscape continues to evolve, IMEG’s healthcare leaders from across the country are seeing several emerging trends that are poised to have wide-ranging impacts on facility design and construction. Following are six of the trends and strategies they expect to become more commonplace in 2022 and the years to come.
