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
Adaptive Reuse | Sep 12, 2024
White paper on office-to-residential conversions released by IAPMO
IAPMO has published a new white paper titled “Adaptive Reuse: Converting Offices to Multi-Residential Family,” a comprehensive analysis of addressing housing shortages through the conversion of office spaces into residential units.
Mixed-Use | Sep 10, 2024
Centennial Yards, a $5 billion mixed-use development in downtown Atlanta, tops out its first residential tower
Centennial Yards Company has topped out The Mitchell, the first residential tower of Centennial Yards, a $5 billion mixed-use development in downtown Atlanta. Construction of the apartment building is expected to be complete by the middle of next year, with first move-ins slated for summer 2025.
Healthcare Facilities | Sep 9, 2024
Exploring the cutting edge of neuroscience facility design
BWBR Communications Specialist Amanda Fisher shares the unique considerations and challenges of designing neuroscience facilities.
Office Buildings | Sep 6, 2024
Fact sheet outlines benefits, challenges of thermal energy storage for commercial buildings
A U.S. Dept. of Energy document discusses the benefits and challenges of thermal energy storage for commercial buildings. The document explains how the various types of thermal energy storage technologies work, where their installation is most beneficial, and some practical considerations around installations.
Office Buildings | Sep 5, 2024
Office space downsizing trend appears to be past peak
The office downsizing trend may be past its peak, according to a CBRE survey of 225 companies with offices in the U.S., Canada, and Latin America. Just 37% of companies plan to shrink their office space this year compared to 57% last year, the survey found.
University Buildings | Sep 4, 2024
UC San Diego’s new Multidisciplinary Life Sciences Building will support research and teaching in both health and biological sciences
The University of California San Diego has approved plans for a new Multidisciplinary Life Sciences Building, with construction starting this fall. The 200,000-sf, six-level facility will be the first building on the UC San Diego campus to bridge health science research with biological science research and teaching.
Codes and Standards | Sep 3, 2024
Atlanta aims to crack down on blighted properties with new tax
A new Atlanta law is intended to crack down on absentee landlords including commercial property owners and clean up neglected properties. The “Blight Tax” allows city officials to put levies on blighted property owners up to 25 times higher than current millage rates.
Resiliency | Sep 3, 2024
Phius introduces retrofit standard for more resilient buildings
Phius recently released, REVIVE 2024, a retrofit standard for more resilient buildings. The standard focuses on resilience against grid outages by ensuring structures remain habitable for at least a week during extreme weather events.
Construction Costs | Sep 2, 2024
Construction material decreases level out, but some increases are expected to continue for the balance Q3 2024
The Q3 2024 Quarterly Construction Insights Report from Gordian examines the numerous variables that influence material pricing, including geography, global events and commodity volatility. Gordian and subject matter experts examine fluctuations in costs, their likely causes, and offer predictions about where pricing is likely to go from here. Here is a sampling of the report’s contents.
Adaptive Reuse | Aug 29, 2024
More than 1.2 billion sf of office space have strong potential for residential conversion
More than 1.2 billion sf of U.S. office space—14.8% of the nation’s total—have strong potential for conversion to residential use, according to real estate software and services firm Yardi. Yardi’s new Conversion Feasibility Index scores office buildings on their suitability for multifamily conversion.
