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
| Feb 17, 2014
Call for Entries: 17th annual Building Team Awards - Deadline Extended!
BD+C's Building Team Awards is the industry's only recognition program to honor projects that achieve excellence in both design/construction and collaboration of the AEC/O team. The deadline has been extended to March 14, 2014.
| Feb 17, 2014
GBI to Offer AIA Approved Course Free for 60 Days to Train New Green Globes Professionals
The Green Building Initiative™ (GBI) announced today that between Feb. 13 and April 15 it will provide free access to its online certification course for Green Globes Professionals™ (GGPs). GGPs help guide building projects in achieving Green Globes® ratings, awarded for environmentally-focused design and construction.
| Feb 14, 2014
ASHRAE, Green Grid team up on energy-efficiency guide for data centers
Vendor-neutral publication examines aspects of the popular power usage effectiveness (PUE) metric.
| Feb 14, 2014
Scrap tires used to boost masonry blocks at Missouri University of S&T
Research could lead to blocks that use waste material and have seismic and insulating benefits.
| Feb 14, 2014
Giant interactive pinwheel adds fun to museum exterior
The proposed design for the Santa Cruz Museum of Art and History features a 10-foot pinwheel that can be activated by passersby.
| Feb 14, 2014
First look: Kentucky's Rupp Arena to get re-clad as part of $310M makeover
Rupp Arena will get a 40-foot high glass façade and a new concourse, but will retain many of its iconic design elements.
| Feb 14, 2014
Must see: Developer stacks shipping containers atop grain silos to create student housing tower
Mill Junction will house up to 370 students and is supported by 50-year-old grain silos.
| Feb 14, 2014
The Technology Report 2014: Top tech tools and trends for AEC professionals
In this special five-part report, Building Design+Construction explores how Building Teams throughout the world are utilizing advanced robotics, 3D printers, drones, data-driven design, and breakthroughs in building information modeling to gain efficiencies and create better buildings.
| Feb 14, 2014
Crowdsourced Placemaking: How people will help shape architecture
The rise of mobile devices and social media, coupled with the use of advanced survey tools and interactive mapping apps, has created a powerful conduit through which Building Teams can capture real-time data on the public. For the first time, the masses can have a real say in how the built environment around them is formed—that is, if Building Teams are willing to listen.
| Feb 13, 2014
University officials sound off on net zero energy buildings
As part of its ongoing ZNE buildings research project, Sasaki Associates, in collaboration with Buro Happold, surveyed some 500 campus designers and representatives on the top challenges and opportunities for achieving net-zero energy performance on university and college campuses.
