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
| Dec 4, 2012
Wagner joins Ghafari as Manager of Structural Engineering
Wagner comes to Ghafari from Walter P Moore, where he served as a principal, chaired the construction administration task force and led the design of numerous projects ranging in size from $10 million to $70 million.
| Dec 4, 2012
City of Gainesville to break ground on $33 million bus fleet maintenance and ops facility
The 140,000-sf facility will include dispatch, administrative and maintenance facilities.
| Nov 28, 2012
Project team to showcase design for first mixed-use retail center of its kind in Mexico City
Project reaching construction milestone, offering national model for urban development in Mexico.
| Nov 28, 2012
Cummins announces ratings classification for data center power systems
The Data Center Continuous ratings span the range of Cummins Power Generation’s high horsepower diesel generator sets, from 1 MW up to 2.5 MW, and will apply to both 50 Hz and 60 Hz configurations.
| Nov 28, 2012
Francis Cauffman appoints Stainbrook Director of Higher Education
Stainbrook has 16 years of experience as a strategic planner and urban designer working on complex projects on- and off-campus.
| Nov 27, 2012
SFIA releases technical guide for cold-formed steel framing products
The 114-page book covers both structural and non-structural applications, including section properties of SFIA member product profiles, and complete load and span tables for most applications.
| Nov 21, 2012
Architecture Billings Index positive for third straight month
All regions reporting positive business conditions
| Nov 20, 2012
PC Construction completes Juniper Hall at Champlain College
Juniper Hall is on track for LEED Gold certification from the U.S. Green Building Council.
| Nov 14, 2012
U.S. Green Building Council partners with Pearson
Partnership will help further USGBC’s mission by advancing green building education
| Nov 14, 2012
U.S. Green Building Council announces grant from Google to catalyze transformation of building materials industry and indoor health
Focus is on healthy building materials to promote indoor environmental quality and human health
