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
BIM and Information Technology | May 26, 2015
Moore's Law and the future of urban design
SmithGroupJJR's Stephen Conschafter, urban designer and planner, discusses his thoughts on the 50th anniversary of Moore's Law and how technology is transforming urban design.
Architects | May 26, 2015
AIA design competition creates portable, temporary housing for the homeless
The winning design from the AIA's "A Safe Place" competition was built at the AIA convention in Atlanta and later donated to a local non-profit partner.
BIM and Information Technology | May 21, 2015
How AEC firms should approach BIM training
CASE Founding Partner Steve Sanderson talks about the current state of software training in the AEC industry and common pitfalls in AEC training.
Architects | May 20, 2015
Architecture billings remain stuck in winter slowdown
Regional business conditions continue to thrive in the South and West
University Buildings | May 19, 2015
Special Report: How your firm can help struggling colleges and universities meet their building project goals
Building Teams that want to succeed in the higher education market have to help their clients find new funding sources, control costs, and provide the maximum value for every dollar.
University Buildings | May 19, 2015
Renovate or build new: How to resolve the eternal question
With capital budgets strained, renovation may be an increasingly attractive money-saving option for many college and universities.
University Buildings | May 19, 2015
KU Jayhawks take a gander at a P3 development
The P3 concept is getting a tryout at the University of Kansas, where state funding for construction has fallen from 20% of project costs to about 11% over the last 10 years.
Multifamily Housing | May 19, 2015
Zaha Hadid unveils 'interlocking lattice' design for luxury apartments in Monterrey, Mexico
Hadid's scheme was inspired by the Mexican tradition of interlocking lattice geometries.
Retail Centers | May 18, 2015
ULI forecast sees clear skies for real estate over next three years
With asset availability declining in several sectors, rents and transactions should rise.
Architects | May 17, 2015
NCARB wants the title ‘architect’ confined to those who are licensed
The Council is urging state licensing boards to come up with a substitute for the pre-licensure title ‘Intern.’