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
Museums | May 13, 2015
The museum of tomorrow: 8 things to know about cultural institutions in today’s society
Entertainment-based experiences, personal journeys, and community engagement are among the key themes that cultural institutions must embrace to stay relevant, write Gensler's Diana Lee and Richard Jacob.
Industrial Facilities | May 11, 2015
SOM-designed Manufacturing and Design Innovation Institute opens in Chicago
The new space will be a place for academia, industries, and civic bodies to collaborate.
Sponsored | Roofing | May 11, 2015
How architects can tap into the expertise of their metal roof manufacturer, part 2
Here are three things metal roof manufacturers can do to help the architect
BIM and Information Technology | May 10, 2015
How beacons will change architecture
Indoor positioning is right around the corner. Here is why it matters.
Architects | May 10, 2015
Harness the connection between managing risk and increasing profitability, Part 2
In Part 1, we covered taking control of the submittals schedule and managing RFIs. Let’s move on to properly allocating substitutions and limiting change orders.
Architects | May 10, 2015
Harness the connection between managing risk and increasing profitability, Part 1
AE firms need to protect themselves against vague contractual and procedural situations during all phases of the project in order to minimize their liability and exposure to risk, writes AEC industry consultant Steve Whitehorn.
Building Team | May 8, 2015
Construction industry adds 45,000 jobs in April
The construction industry saw an increase in jobs during the month of April after losing approximately 9,000 positions in March.
Building Team | May 8, 2015
Surety bond forms specifically for design-build projects now available
The documents are the first of their kind to be coauthored by designers and builders.
High-rise Construction | May 6, 2015
Parks in the sky? Subterranean bike paths? Meet the livable city, designed in 3D
Today’s great cities must be resilient—and open—to many things, including the influx of humanity, writes Gensler co-CEO Andy Cohen.
Architects | May 5, 2015
How to build 'smart' teams
In today's complex world, there are no simple answers—solutions to our most pressing problems aren't offered in 140 characters. Instead, it takes teams of people to rise to a challenge, resolve issues, and execute on strategy, writes Paladino's Julie Honeywell.