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
| Mar 11, 2011
Mixed-income retirement community in Maryland based on holistic care
The Green House Residences at Stadium Place in Waverly, Md., is a five-story, 40,600-sf, mixed-income retirement community based on a holistic continuum of care concept developed by Dr. Bill Thomas. Each of the four residential floors houses a self-contained home for 12 residents that includes 12 bedrooms/baths organized around a common living/social area called the “hearth,” which includes a kitchen, living room with fireplace, and dining area.
| Mar 11, 2011
Oregon childhood center designed at child-friendly scale
Design of the Early Childhood Center at Mt. Hood Community College in Gresham, Ore., focused on a achieving a child-friendly scale and providing outdoor learning environments.
| Mar 11, 2011
Guests can check out hotel’s urban loft design, music selection
MODO, Advaya Hospitality’s affordable new lifestyle hotel brand, will have an urban Bauhaus loft design and target design-, music-, and tech-savvy guest who will have access to thousands of tracks in vinyl, CD, and MP3 formats through a partnership with Downtown Music. Guest can create their own playlists, and each guest room will feature iPod docks and large flat-screen TVs.
| Mar 11, 2011
Construction of helicopter hangars in South Carolina gets off the ground
Construction is under way on a $26 million aviation support facility for South Carolina National Guard helicopters. Hendrick Construction, the project’s Charlotte, N.C.-based GC, is building the 111,000-sf Donaldson Hangar facility on the 30-acre South Carolina Technology & Aviation Center, Greenville.
| Mar 11, 2011
Texas A&M mixed-use community will focus on green living
HOK, Realty Appreciation, and Texas A&M University are working on the Urban Living Laboratory, a 1.2-million-sf mixed-use project owned by the university. The five-phase, live-work-play project will include offices, retail, multifamily apartments, and two hotels.
| Mar 11, 2011
Chicago office building will serve tenants and historic church
The Alter Group is partnering with White Oak Realty Partners to develop a 490,000-sf high-performance office building in Chicago’s West Loop. The tower will be located on land owned by Old St. Patrick’s Church (a neighborhood landmark that survived the Chicago Fire of 1871) that’s currently being used as a parking lot.
| Mar 11, 2011
Community sports center in Nashville features NCAA-grade training facility
A multisport community facility in Nashville featuring a training facility that will meet NCAA Division I standards is being constructed by St. Louis-based Clayco and Chicago-based Pinnacle.
| Mar 11, 2011
Slam dunk for the University of Nebraska’s basketball arena
The University of Nebraska men’s and women’s basketball programs will have a new home beginning in 2013. Designed by the DLR Group, the $344 million West Haymarket Civic Arena in Lincoln, Neb., will have 16,000 seats, suites, club amenities, loge, dedicated locker rooms, training rooms, and support space for game operations.
| Mar 10, 2011
Steel Joists Clean Up a Car Wash’s Carbon Footprint
Open-web bowstring trusses and steel joists give a Utah car wash architectural interest, reduce its construction costs, and help green a building type with a reputation for being wasteful.
| Mar 10, 2011
How AEC Professionals Are Using Social Media
You like LinkedIn. You’re not too sure about blogs. For many AEC professionals, it’s still wait-and-see when it comes to social media.
