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, 2014
Check out this tree-like skyscraper concept for vertical farming
Aprilli Design Studio has stepped forward with a new idea for a vertical farm, which is intended to resemble a giant tree. It uses lightweight decks as outdoor growing space, adding up to about 25 acres of space.
| Jul 16, 2014
User input on aquatics center keeps students in the swim [2014 Building Team Awards]
Collaborative spirit abounds in the expansion and renovation of a high school pool facility in suburban Chicago.
| Jul 16, 2014
Nonresidential construction starts up 34% in June
Construction starts for nonresidential work saw a surge in June, rising more than a third compared with the previous month, according to Reed Construction Data.
| Jul 16, 2014
ASHRAE, IAQA team up to improve resources on indoor air quality
Indoor Air Quality Association will become part of the ASHRAE organization while maintaining its own brand and board; HQ will relocate to Atlanta.
| Jul 15, 2014
Michael Graves talks with Washington Post about new design eye from life in a wheelchair
Celebrated American architect Michael Graves sits with the Washington Post to talk about how being on a wheelchair changed the way he focuses on design.
| Jul 15, 2014
A look into the history of modular construction
Modular construction is more than a century old, and throughout its lifespan, the methods have been readapted to meet specific needs of different eras.
| Jul 15, 2014
AECOM to buy URS Corporation in $6 billion deal
Together, the firms will form a massive global giant with more than $19 billion in revenue and 95,000 employees in 150 countries.
| Jul 14, 2014
Meet the bamboo-tent hotel that can grow
Beijing-based design cooperative Penda designed a bamboo hotel that can easily expand vertically or horizontally.
| Jul 14, 2014
Foster + Partners unveils triple-glazed tower for RMK headquarters
The London-based firm unveiled plans for the Russian Copper Company's headquarters in Yekaterinburg.
| Jul 14, 2014
Toyota selects developer for its new North American headquarters in Plano, Texas
Toyota announced that it has selected Dallas-based KDC Real Estate Development & Investments to develop its new North American headquarters campus in the Legacy West development in Plano, Texas.