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
| May 30, 2012
Hill International to manage construction of Al Risafa Stadium in Iraq
The three-year contract has an estimated value to Hill of approximately $3.3 million.
| May 29, 2012
Torrance Memorial Medical Center’s pediatric burn patients create their version of new Patient Tower using Legos
McCarthy workers joined the patients, donning construction gear and hard hats, to help with their building efforts.
| May 29, 2012
Reconstruction Awards Entry Information
Download a PDF of the Entry Information at the bottom of this page.
| May 29, 2012
AIA expands Documents-On-Demand service??
Six new documents added, DOD offers nearly 100 contract documents.
| May 29, 2012
Legrand achieves over 20% energy-intensity reduction in Presidential Challenge
West Hartford headquarters announced as Better Buildings, Better Plants “Showcase” site.
| May 29, 2012
Thornton Tomasetti/Fore Solutions provides consulting for Phase I of Acadia Gateway Center
Project receives LEED Gold certification.
| May 24, 2012
2012 Reconstruction Awards Entry Form
Download a PDF of the Entry Form at the bottom of this page.
| May 24, 2012
Gilbane’s Spring 2012 economic report identifies multiple positive economic and market factors
Anticipating increasing escalation in owner costs through 2014.
| May 24, 2012
Construction backlog declines 5.4% in the first quarter of 2012?
The nation’s nonresidential construction activity will remain soft during the summer months, with flat to declining nonresidential construction spending.