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
| Dec 2, 2011
Legrand joins White House initiative to spur energy efficiency in commercial buildings
Company agrees to aggressive energy savings and reporting.
| Dec 2, 2011
Goody Clancy awarded Ohio State residential project
The project, which is focused on developing a vibrant on-campus community of learning for OSU undergraduates.
| Dec 1, 2011
Nauset Construction breaks ground on Massachusetts health care center
The $20 million project is scheduled to be completed by December 2012.
| Dec 1, 2011
Ground broken on first LEED Platinum designed school house built by volunteers
Phoenix public school receives the generous gift of a state-of-the-art building for student and community use.
| Dec 1, 2011
VLK Architects’ office receives LEED certification
The West 7th development, which houses the firm’s office, was designed to be LEED for Core & Shell, which gave VLK the head start on finishing out the area for LEED Silver Certification CI.
| Nov 29, 2011
First EPD awarded to exterior roof and wall products manufacturer
EPD is a standardized, internationally recognized tool for providing information on a product’s environmental impact.
| Nov 29, 2011
Suffolk Construction breaks ground on Boston residential tower
Millennium Place III is a $220 million, 256-unit development that will occupy a full city block in Boston’s Downtown Crossing.
| Nov 29, 2011
Report finds credit crunch accounts for 20% of nation’s stalled projects
Persistent financing crunch continues to plague design and construction sector.
| Nov 29, 2011
SB Architects completes Mission Hills Volcanic Mineral Springs and Spa in China
Mission Hills Volcanic Mineral Springs and Spa is home to the largest natural springs reserve in the region, and measures 950,000 sf.
| Nov 29, 2011
Turner Construction establishes partnership with Clark Builders
Partnership advances growth in the Canadian marketplace.
