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
Projects | Apr 17, 2017
BD+C's 2017 Design Innovation Report
Façades that would make Dr. Seuss smile, living walls, and exterior wall space that doubles as gallery space are all represented in this year's BD+C Design Innovation Report.
Healthcare Facilities | Apr 13, 2017
The rise of human performance facilities
A new medical facility in Chicago focuses on sustaining its customers’ human performance.
Laboratories | Apr 13, 2017
How to design transformative scientific spaces? Put people first
While most labs are designed to achieve that basic functionality, a transformational lab environment prioritizes a science organization’s most valuable assets: its people.
Hotel Facilities | Apr 12, 2017
Hotels embrace place
Today’s hospitality environments emphasize unique, localized experiences to attract and engage guests.
Green | Apr 11, 2017
Passivhaus for high-rises? Research demonstrates viability of the stringent standards for tall residential buildings
A new study conducted by FXFOWLE shows that Building Teams can meet stringent Passivhaus performance standards with minimal impact to first cost and aesthetics.
Curtain Wall | Apr 11, 2017
Masters of geometry
Three firms that specialize in façades that curve, twist, and turn see themselves as artisans of the unthinkable.
Office Buildings | Apr 10, 2017
Innovation lab makes developing eye care solutions a collaborative affair
The Shop East innovation lab presents 13,500 sf of workspace across two floors with an emphasis on collaboration.
Architects | Apr 10, 2017
New Bjarke Ingels documentary gives a peek behind the curtain
The movie takes a slightly darker tone than previous projects chronicling the starchitect’s rise to prominence.
Architects | Apr 4, 2017
Architect Howard Elkus dies at 78
Cofounder of Elkus Manfredi Architects, his career spanned five decades, and included a spectrum of major design projects.