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
| Aug 11, 2010
Best AEC Firms of 2011/12
Later this year, we will launch Best AEC Firms 2012. We’re looking for firms that create truly positive workplaces for their AEC professionals and support staff. Keep an eye on this page for entry information. +
| Aug 11, 2010
Report: Building codes and regulations impede progress toward uber-green buildings
The enthusiasm for super green Living Buildings continues unabated, but a key stumbling block to the growth of this highest level of green building performance is an existing set of codes and regulations. A new report by the Cascadia Region Green Building Council entitled "Code, Regulatory and Systemic Barriers Affecting Living Building Projects" presents a case for fundamental reassessment of building codes.
| Aug 11, 2010
Call for entries: Building enclosure design awards
The Boston Society of Architects and the Boston chapter of the Building Enclosure Council (BEC-Boston) have announced a High Performance Building award that will assess building enclosure innovation through the demonstrated design, construction, and operation of the building enclosure.
| Aug 11, 2010
Portland Cement Association offers blast resistant design guide for reinforced concrete structures
Developed for designers and engineers, "Blast Resistant Design Guide for Reinforced Concrete Structures" provides a practical treatment of the design of cast-in-place reinforced concrete structures to resist the effects of blast loads. It explains the principles of blast-resistant design, and how to determine the kind and degree of resistance a structure needs as well as how to specify the required materials and details.
| Aug 11, 2010
ACSA announces 2008-2009 ACSA/AISC steel design student competition winners
The Association of Collegiate Schools of Architecture (ACSA) is pleased to announce the winners of the ninth annual steel design student competition for the 2008-2009 academic year. Administered by the Association of Collegiate Schools of Architecture (ACSA) and sponsored by the American Institute of Steel Construction (AISC), the program challenged students, working individually or in teams, to explore a variety of design issues related to the use of steel in design and construction.
| Aug 11, 2010
ZweigWhite Announces 2009 Best Firms to Work For
Management consulting and research firm ZweigWhite has identified the best civil engineering, structural engineering, multidiscipline A/E services, environmental services, and architecture firms to work for in its annual ranking of top industry firms. These outstanding employers were selected based on their commitment to provide a positive work environment and challenging and interesting work opportunities for their employees.
