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Allsteel / Gunlocke, Atlanta, USA

Issue 40 Dec / Jan 2007-8 : Retail : Store


The United States has not been particularly well known for its environmental stewardship in recent years; however, in certain pockets of the design and construction industry, this trend is changing.

A few years ago the U.S. Green Building Council set out to improve the quality and sustainability of construction projects in the United States. This council established a metric for sustainability known as the Leadership in Energy and Environmental Design (LEED) Green Building Rating System™. The LEED system recognises varying aspects of sustainable design from material selection to daylight and views to bike racks and locally manufactured products. Projects are rated on these design features and awarded points for the sustainable elements contained in the design. Ratings are awarded in the following categories: LEED Certified (21-26 Points), LEED Silver (27-31 Points), LEED Gold (32-41 points), or LEED Platinum (42-57 Points).
In an age of green design, some project types can be more challenging than others. Functional, aesthetically pleasing retail design can be created within the parameters of sustainability. A number of projects in recent years have indicated that even in traditionally incandescent environments such as retail, sustainable design practices can be utilised effectively and with very attractive results. The Allsteel / Gunlocke furniture showroom in Atlanta, Georgia is one such space.
Gabler-Youngston Architectural Lighting Design was retained by Hellmuth, Obata and Kassabaum to assist in the creation of a sustainable design for 12,600 square feet of retail space, with a lighting and controls budget of $10 per square foot. The project was slated at the Schematic Design phase to attempt a LEED Silver certification.
In the process of design Gabler-Youngston was able to push the project further along toward sustainability. The lighting and controls design for the project went beyond expectations, earning five points for lighting related aspects, or a full 15% of the points awarded to the project. Partially due to aggressive energy hunting, the project achieved a LEED Gold Certification for Commercial Interiors, one of only 42 to have received this level of certification in this category to date.
Using photosensors, new lamp technology, energy limiting ballasts and transformers, dimming ballasts and automated controls, the lighting design minimises energy consumption while addressing retail, client entertainment, office management, conference, and employee training illumination requirements.
An ambient lighting power density of 0.4W per square foot was achieved, 51.75% below the U.S. ASHRAE / IESNA 90.1-2004 Energy Standard and a retail display lighting power density of 0.5W per square foot, 67% below ASHRAE / IESNA 90.1-2004 Standards. At less than 0.9 watts per square foot total connected load, this project created the ambiance and focus required for retail lighting using 10% less energy than is allowed for office spaces. The maximum allowable LEED points for energy and efficiency were awarded to the project, and two additional points were awarded for the lighting controls.
Maintenance friendly, the design uses just six lamp types. Working within the $10 per square foot budget the end result is a beautiful, sustainable design with minimal creative compromise.



At the entry, T5 fluorescent wallwashers and striplights lamps detailed into walls and reception desk create a sense of arrival. Above translucent ceiling panels, 20 watt T3 halogen lamps in decorative pendants provide a little sparkle to the space. All incandescent sources and most fluorescent sources are connected to the central dimming system designed to minimise energy consumption and maximise daylight utilisation

  • Allsteel

    Linear pendants in customised lengths illuminate the showroom. 28 watt T5 fluorescent and ceramic metal halide sources provide ambient and accent lighting from a single lighting system. Reacting to photosensors, the fluorescent sources dim or brighten to compensate for daylight contribution. The separately switched PAR metal halide lamps provide punch for the merchandise. Electronic ballasts for the PAR lamps were carefully selected for performance and for system power consumption. Each accent light consumes only 22 watts, ballast included 

  • Allsteel

    In the conference room, dimmable T5 striplights brighten ceilings and walls. 37W MR16 infrared downlights highlight the table

  • Allsteel

    The Community Room is a place for entertaining and relaxing. 37 watt MR16 lamps with infrared reflector technology are utilised to maximise output while minimising power consumption. Q37WMR16/HIR/CG25 lamps in landscape style downlights attract attention to the trellis and illuminate the Community Room and hearth. T2 fluorescent striplights concealed within the trellis increase the sense of volume in the space

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