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
| Jul 16, 2012
Business school goes for maximum vision, transparency, and safety with fire rated glass
Architects were able to create a 2-hour exit enclosure/stairwell that provided vision and maximum fire safety using fire rated glazing that seamlessly matched the look of other non-rated glazing systems.
| Jul 12, 2012
New firm RSK Avanti Partners offers market development services
Full-service consulting firm is focused on working with product manufacturers, designers, specifies and contractors in the building construction market.
| Jul 12, 2012
Chicago Public Schools names Lend Lease team as construction manager
Under this Capital Improvement Program, the Lend Lease team will be responsible for renovation and life safety work at over 100 Chicago Public Schools across the City.
| Jul 12, 2012
Cramer joins Gilbane’s NYC Business Development Team
New Business Development Manager brings over 30 years of experience to Gilbane.
| Jul 12, 2012
Cardoso joins Margulies Perruzzi Architects
Senior architect brings experience, leadership to firm’s healthcare practice.
| Jul 12, 2012
EE&K and Knutson Construction selected for the Interchange in Minneapolis
Design-build contract for $79.3 million transportation hub will connect transit with culture.
| Jul 11, 2012
New BDC University course: Design Criteria for Ceramic Tile/Stone Installations
Everyone that successfully completed to course will receive 1.0 HSW/LU AIA LU.
| Jul 11, 2012
Perkins+Will designs new home for Gateway Community College
Largest one-time funded Connecticut state project and first designed to be LEED Gold.
| Jul 11, 2012
HOK honored with Los Angeles architectural award
42nd annual awards from the Los Angeles Business Council honor design excellence.
| Jul 11, 2012
Skanska relocates its Philadelphia metro office
Construction firm’s new 19,100-sf office targets LEED Gold certification.