Launch Slideshow

155 North Wacker Drive, Chicago

155 North Wacker Drive, Chicago

  • http://www.archlighting.com/Images/155-North-Wacker_1_tcm47-846510.jpg

    true

    600

    Thomas J Rossiter

    This new 1.4 million-square-foot office tower boasts a brand new lobby and arcade that activates the streetscape and creates a dynamic public space.
  • http://www.archlighting.com/Images/155-North-Wacker_2_tcm47-846511.jpg

    true

    600

    The lobby and arcade are contiguous, linked by the strong graphic of the diagonal grid overlay on the ceiling of both spaces.
  • http://www.archlighting.com/Images/155-North-Wacker_3_tcm47-846512.jpg

    true

    600

    Thomas J Rossiter

    The strong diagonal lines are created using LED striplights mounted within an architecturally constructed cove. These concealed light sources were used for their ability to perform unaffected by changes in ambient temperatures (the cove exists both in interior and exterior condistions.)
  • http://www.archlighting.com/Images/155-North-Wacker_4_tcm47-846513.jpg

    true

    600

    Thomas J Rossiter

    Recessed double-lamp ceramic metal halide accent lights are located concealed in the cove to provide ambient and feature light levels. Concealing these fixtures in the coves provided a clean uncluttered ceiling.
  • http://www.archlighting.com/Images/155-North-Wacker_5_tcm47-846515.jpg

    true

    600

    Thomas J Rossiter

    The stone core is illuminated with recessed metal halide accent lights fitted with spread lens assemblies to provide a soft wash of light. The perimeter cove uses indirect fluorescent strip lights to give the sense that the ceiling is floating from the edge wall. All light sources are matched to 3000K.
  • http://www.archlighting.com/Images/155-North-Wacker_6_tcm47-846516.jpg

    true

    600

    Thomas J Rossiter

    The elevator lobbies are lighted using asymmetric concealed ceramic metal halide floor lights. These fixtures are concealed in a “carved” slot in the core walls. The indirect lighting provides a warm and inviting effect.
  • http://www.archlighting.com/Images/155-North-Wacker_7_tcm47-846509.jpg

    true

    600

    Thomas J Rossiter

    The strong geometric forms and integrated lighting solutions contribute to the success of this exciting new public space. The project has achieved a LEED-CS Gold rating.
 

Following the tradition of great Chicago high-rise office buildings, 155 North Wacker Drive first roots itself to the street with a grand lobby and atrium before it begins its 46-story climb toward the sky. Its use of bold geometric forms coupled with skilled lighting design create a distinct public–private space.

The transition from street (the public realm) to lobby (the intermediary private realm) is made seamless thanks to the strong form of the diagonal ceiling grid overhead. Bands of light accentuate the diagonal grid courtesy of concealed LED strips located in an architecturally constructed cove. LEDs were selected for their ability to withstand changes in ambient temperature. To further balance the color temperature, recessed double-lamp ceramic metal halide accent fixtures are also concealed in the cove.

To highlight and soften the powerful presence of the elevator core's exterior stone walls, metal halide accent lights equipped with spread lens assemblies brush the surface with a soft wash of light. A perimeter cove along the lobby's back stone wall uses indirect fluorescent striplights so that the origami-like folded planes of the diagonal ceiling grid appear to float. All sources are color-matched to 3000K for a balanced effect.

At the elevator core lobby interiors, asymmetric ceramic metal halide floodlights concealed in a carved slot in the core wall create a warm accent and provide another layer of scale to soften the intensity of the core's volume.

Jury Comments: The designers have taken an idea and detailed it incredibly well. • It's quite a feat not to see the glass. • It has a medieval design quality.