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
| Jan 10, 2013
Guide predicts strongest, weakest AEC markets for 2013
2013 Guide to U.S. AEC markets touts apartments, natural gas, senior housing and transmission and distribution.
| Jan 9, 2013
Panasonic and Bluebeam preview new architect app at CES 2013
Panasonic and Bluebeam Software collaborate to develop and introduce the 4K tablet and software to the design and construction industry.
| Jan 3, 2013
Answered prayers
A bold renovation enables a small church to expand its mission on a grand scale.
| Jan 3, 2013
Top BIM/VDC articles of 2011-2012
A compendium of BD+Cs top building information modeling and virtual design + construction articles from 2011-12.
| Jan 3, 2013
8 trends shaping today’s senior housing
The ranks of those age 65 and older are swelling by the thousands every day. Is there an opportunity for your firm in the seniors housing market?
| Jan 2, 2013
Trends Report: New facilities enhance the quality of campus life
Colleges and universities are building state-of-the-art student unions, dining halls, and other non-academic buildings to enrich the campus experience, boost enrollment, and stay competitive.
| Jan 2, 2013
M&A activity at U.S. AEC firms up slightly
Total mergers and acquisitions in the AEC industry hit 171 in 2012, up slight from the 169 deals in 2011.
| Jan 2, 2013
Global data center market to ‘slow’ to 14.3% this year
Total global investment in data centers is expected to slow down somewhat this year but still increase at a respectable 14.3%, according to DCD Intelligence.
| Jan 2, 2013
Construction jobs made gains in 2012, even with a slow Q4, says Gilbane report
The construction sector in the nine states with 50% of construction employment was up 169,000 jobs from February to September 2012, following a lost of 137,000 jobs from September 2011 to January 2012.
