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
Multifamily Housing | Apr 26, 2017
Huh? A subway car on the roof?
Chicago’s newest multifamily development features an iconic CTA car on its amenity deck.
High-rise Construction | Apr 26, 2017
Dubai’s newest building is a giant gilded picture frame
Despite currently being under construction, the building is the center of an ongoing lawsuit filed by the architect.
Architects | Apr 25, 2017
Two Mid-Atlantic design firms join forces
Quinn Evans Architects and Cho Benn Holback + Associates have similar portfolios with an emphasis on civic work.
BIM and Information Technology | Apr 24, 2017
Reconciling design energy models with real world results
Clark Nexsen’s Brian Turner explores the benefits and challenges of energy modeling and discusses how design firms can implement standards for the highest possible accuracy.
Higher Education | Apr 24, 2017
Small colleges face challenges — and opportunities
Moody’s Investor Service forecasts that closure rates for small institutions will triple in the coming years, and mergers will double.
Healthcare Facilities | Apr 24, 2017
Treating the whole person: Designing modern mental health facilities
Mental health issues no longer carry the stigma that they once did. Awareness campaigns and new research have helped bring our understanding of the brain—and how to design for its heath—into the 21st century.
Architects | Apr 20, 2017
Design as a business strategy: Tapping data is easier than you think
We have been preaching “good design matters” for a long time, demonstrating the connection between the physical environment and employee satisfaction, individual and team performance, and an evolving organizational culture.
Architects | Apr 20, 2017
‘Gateways to Chinatown’ project seeks the creation of a new neighborhood landmark for NYC’s Chinatown
The winning team will have $900,000 to design and implement their proposal.
Architects | Apr 19, 2017
Tour Zaha Hadid, Frank Gehry architecture with Google Earth
Google Earth’s new ‘Voyager’ feature allows people to take interactive guided tours.
Multifamily Housing | Apr 18, 2017
Three multifamily, three specialized housing projects among 14 recipients of the AIA’s 2017 Housing Awards
2017 marks the 17th year the AIA has rewarded projects and architects with the Housing Awards.
