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
Government Buildings | May 10, 2024
New federal buildings must be all-electric by 2030
A new Biden Administration rule bans the use of fossil fuels in new federal buildings beginning in 2030. The announcement came despite longstanding opposition to the rule by the natural gas industry.
Sustainable Development | May 10, 2024
Nature as the city: Why it’s time for a new framework to guide development
NBBJ leaders Jonathan Ward and Margaret Montgomery explore five inspirational ideas they are actively integrating into projects to ensure more healthy, natural cities.
Mass Timber | May 8, 2024
Portland's Timberview VIII mass timber multifamily development will offer more than 100 affordable units
An eight-story, 72,000-sf mass timber apartment building in Portland, Ore., topped out this winter and will soon offer over 100 affordable units. The structure is the tallest affordable housing mass timber building and the first Type IV-C affordable housing building in the city.
Architects | May 8, 2024
Ivan O’Garro, AIA joins LEO A DALY as a vice president
Integrated design firm LEO A DALY welcomes Ivan O’Garro, AIA, as a vice president and managing principal of its Atlanta studio.
K-12 Schools | May 7, 2024
World's first K-12 school to achieve both LEED for Schools Platinum and WELL Platinum
A new K-12 school in Washington, D.C., is the first school in the world to achieve both LEED for Schools Platinum and WELL Platinum, according to its architect, Perkins Eastman. The John Lewis Elementary School is also the first school in the District of Columbia designed to achieve net-zero energy (NZE).
Healthcare Facilities | May 6, 2024
Hospital construction costs for 2024
Data from Gordian breaks down the average cost per square foot for a three-story hospital across 10 U.S. cities.
Biophilic Design | May 6, 2024
The benefits of biophilic design in the built environment
Biophilic design in the built environment supports the health and wellbeing of individuals, as they spend most of their time indoors.
MFPRO+ Special Reports | May 6, 2024
Top 10 trends in affordable housing
Among affordable housing developers today, there’s one commonality tying projects together: uncertainty. AEC firms share their latest insights and philosophies on the future of affordable housing in BD+C's 2023 Multifamily Annual Report.
Retail Centers | May 3, 2024
Outside Las Vegas, two unused office buildings will be turned into an open-air retail development
In Henderson, Nev., a city roughly 15 miles southeast of Las Vegas, 100,000 sf of unused office space will be turned into an open-air retail development called The Cliff. The $30 million adaptive reuse development will convert the site’s two office buildings into a destination for retail stores, chef-driven restaurants, and community entertainment.
Codes and Standards | May 3, 2024
New York City considering bill to prevent building collapses
The New York City Council is considering a proposed law with the goal of preventing building collapses. The Billingsley Structural Integrity Act is a response to the collapse of 1915 Billingsley Terrace in the Bronx last December.
