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
K-12 Schools | May 25, 2023
From net zero to net positive in K-12 schools
Perkins Eastman’s pursuit of healthy, net positive schools goes beyond environmental health; it targets all who work, teach, and learn inside them.
Contractors | May 24, 2023
The average U.S. contractor has 8.9 months worth of construction work in the pipeline, as of April 2023
Contractor backlogs climbed slightly in April, from a seven-month low the previous month, according to Associated Builders and Contractors.
Mass Timber | May 23, 2023
Luxury farm resort uses CLT framing and geothermal system to boost sustainability
Construction was recently completed on a 325-acre luxury farm resort in Franklin, Tenn., that is dedicated to agricultural innovation and sustainable, productive land use. With sustainability a key goal, The Inn and Spa at Southall was built with cross-laminated and heavy timber, and a geothermal variant refrigerant flow (VRF) heating and cooling system.
Architects | May 23, 2023
DEI initiatives at KAI Enterprises, with Michael Kennedy, Jr. and Gyasi Haynes
Michael Kennedy, Jr. and Gyasi Haynes of KAI Enterprises, St. Louis, describe their firm's effort to create a culture of diversity, equity, and inclusion—and how their own experiences as black men in the design and construction industry shaped that initiative.
Multifamily Housing | May 23, 2023
One out of three office buildings in largest U.S. cities are suitable for residential conversion
Roughly one in three office buildings in the largest U.S. cities are well suited to be converted to multifamily residential properties, according to a study by global real estate firm Avison Young. Some 6,206 buildings across 10 U.S. cities present viable opportunities for conversion to residential use.
Architects | May 23, 2023
Ware Malcomb hires Francisco Perez-Azua as Director, Interior Architecture & Design, in its Miami office
Ware Malcomb hires Francisco Perez-Azua as Director, Interior Architecture & Design, in its Miami office.
K-12 Schools | May 22, 2023
The revival of single-building K-12 schools
Schools that combine grades PK through 12 are suddenly not so uncommon. Education sector experts explain why.
Architects | May 19, 2023
Snøhetta architects make a bid to unionize the firm's New York studio
Employees at the New York office of architecture firm Snøhetta have filed a petition with the National Labor Relations Board (NLRB) to unionize the studio. Snøhetta employees’ action marks the third time architects at a private-sector architecture studio in the U.S. took that step.
Healthcare Facilities | May 19, 2023
A new behavioral health facility in California targets net zero energy
Shortly before Mental Health Awareness Month in May, development and construction firm Skanska announced the topping out of California’s first behavioral health facility—and the largest in the nation—to target net zero energy. Located in Redwood City, San Mateo County, Calif., the 77,610-sf Cordilleras Health System Replacement Project is slated for completion in late 2024.
Government Buildings | May 18, 2023
GSA launches first biennial construction award program
Today, the U.S. General Services Administration (GSA) announced the new biennial GSA Construction Award program, which is seeking submissions this summer. The program was created to honor outstanding achievements in construction, with a focus on quality and craftsmanship, collaboration and team dynamics, sustainability, innovation, and technology. The first Construction Awards ceremony will take place in 2024.
