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
| Aug 11, 2010
Carpenters' union helping build its own headquarters
The New England Regional Council of Carpenters headquarters in Dorchester, Mass., is taking shape within a 1940s industrial building. The Building Team of ADD Inc., RDK Engineers, Suffolk Construction, and the carpenters' Joint Apprenticeship Training Committee, is giving the old facility a modern makeover by converting the existing two-story structure into a three-story, 75,000-sf, LEED-certif...
| Aug 11, 2010
Utah research facility reflects Native American architecture
A $130 million research facility is being built at University of Utah's Salt Lake City campus. The James L. Sorenson Molecular Biotechnology Building—a USTAR Innovation Center—is being designed by the Atlanta office of Lord Aeck & Sargent, in association with Salt-Lake City-based Architectural Nexus.
| Aug 11, 2010
San Bernardino health center doubles in size
Temecula, Calif.-based EDGE was awarded the contract for California State University San Bernardino's health center renovation and expansion. The two-phase, $4 million project was designed by RSK Associates, San Francisco, and includes an 11,000-sf, tilt-up concrete expansion—which doubles the size of the facility—and site and infrastructure work.
| Aug 11, 2010
Goettsch Partners wins design competition for Soochow Securities HQ in China
Chicago-based Goettsch Partners has been selected to design the Soochow Securities Headquarters, the new office and stock exchange building for Soochow Securities Co. Ltd. The 21-story, 441,300-sf project includes 344,400 sf of office space, an 86,100-sf stock exchange, classrooms, and underground parking.
| Aug 11, 2010
New hospital expands Idaho healthcare options
Ascension Group Architects, Arlington, Texas, is designing a $150 million replacement hospital for Portneuf Medical Center in Pocatello, Idaho. An existing facility will be renovated as part of the project. The new six-story, 320-000-sf complex will house 187 beds, along with an intensive care unit, a cardiovascular care unit, pediatrics, psychiatry, surgical suites, rehabilitation clinic, and ...
| Aug 11, 2010
Colonnade fixes setback problem in Brooklyn condo project
The New York firm Scarano Architects was brought in by the developers of Olive Park condominiums in the Williamsburg section of Brooklyn to bring the facility up to code after frame out was completed. The architects designed colonnades along the building's perimeter to create the 15-foot setback required by the New York City Planning Commission.
| Aug 11, 2010
Wisconsin becomes the first state to require BIM on public projects
As of July 1, the Wisconsin Division of State Facilities will require all state projects with a total budget of $5 million or more and all new construction with a budget of $2.5 million or more to have their designs begin with a Building Information Model. The new guidelines and standards require A/E services in a design-bid-build project delivery format to use BIM and 3D software from initial ...
| Aug 11, 2010
Opening night close for Kent State performing arts center
The curtain opens on the Tuscarawas Performing Arts Center at Kent State University in early 2010, giving the New Philadelphia, Ohio, school a 1,100-seat multipurpose theater. The team of Legat & Kingscott of Columbus, Ohio, and Schorr Architects of Dublin, Ohio, designed the 50,000-sf facility with a curving metal and glass façade to create a sense of movement and activity.
