111 Main

Project Facts
  • Completion Year 2016
  • Design Finish Year 2014
  • Size Building Height: 387 feet Number of Stories: 25 Building Gross Area: 502,610 square feet
  • Awards
    2017, Excellence in Concrete Award, American Concrete Institute - Intermountain Chapter 2017, ENR Mountain States Best Projects: First Place Winner, Engineering News Record 2017, Global Best Projects, Merit Award, Engineering News Record 2018, Award of Excellence - New Construction Category, Structural Engineers Association of Northern California 2018, Award of Excellence: Construction Award, Council on Tall Buildings and Urban Habitat (CTBUH) 2018, IDEAS2 - Innovative Design in Engineering and Architecture with Structural Stee, American Institute Of Steel Construction
  • Collaborators
    WSP Sme Steel Contractors, Inc. Hassett Engineering Inc. Steel Encounters, Inc. Dunn Associates Inc. Edgett Williams
Project Facts
  • Completion Year 2016
  • Design Finish Year 2014
  • Size Building Height: 387 feet Number of Stories: 25 Building Gross Area: 502,610 square feet
  • Awards
    2017, Excellence in Concrete Award, American Concrete Institute - Intermountain Chapter 2017, ENR Mountain States Best Projects: First Place Winner, Engineering News Record 2017, Global Best Projects, Merit Award, Engineering News Record 2018, Award of Excellence - New Construction Category, Structural Engineers Association of Northern California 2018, Award of Excellence: Construction Award, Council on Tall Buildings and Urban Habitat (CTBUH) 2018, IDEAS2 - Innovative Design in Engineering and Architecture with Structural Stee, American Institute Of Steel Construction
  • Collaborators
    WSP Sme Steel Contractors, Inc. Hassett Engineering Inc. Steel Encounters, Inc. Dunn Associates Inc. Edgett Williams

Located at the heart of Salt Lake City’s financial district, at the corner of South Main and East 100 South Street, 111 Main is a Class A office tower that anchors a larger urban redevelopment project in the area. The construction of the building followed a parallel timeline with an adjacent project designed by another architect, the George S. and Dolores Doré Eccles Theater.

The office building and theater, critical elements in the city’s downtown revitalization, contribute to the development of a walkable urban core and help to create a vibrant community. The office tower is targeting LEED® Gold certification and also supports Salt Lake City’s commitment to increased urban density and long-term sustainability.

The structural engineering of 111 Main reflects an innovative solution to a complex site challenge. To ensure the project would not compromise any of the theater’s functionality, the entire structure is suspended from a steel hat truss on top of the building that allows the Eccles Theater to slide under the tower’s south side.

The lobby is enclosed by 35-foot-tall, ultra-clear, low-iron structural glass. SOM developed a sophisticated glass hinge system to meet this height requirement and mitigate seismic movement. The feature provides the office building with a high level of transparency, visually connecting its lobby interiors with the city outside.

111 Main’s translucent glass fin facade reflects changing light conditions as the sun traverses the sky. The structural hat truss, situated behind a graduated translucent glass veil, is also visible in the sunlight and, when backlit, appears like a glowing lantern in the night. The result is a building that adds lightness and luminosity to Salt Lake City’s skyline.

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