Uni-Systems Engineering, Inc.


Completed 2009

Location: Arlington, Texas

Scope of Work: Design, Supply, Installation

Project Client: Manhattan Construction


Architect: HKS, Inc.

General Contractor: Manhattan Construction

Structural Engineer: Walter P Moore

AT&T Stadium

Retractable Roof

AT&T Stadium is a tribute to the 'Everything in Texas is Bigger' tradition. The 105,000 square-foot retractable roof is the largest of its kind and when the two 800,000-pound, fabric-clad panels are open, the entire playing field is visible from above. The open retractable roof, along with the open operable end zone walls, gives visitors an outdoor stadium experience when weather is favorable.

The staff of Uni-Systems Engineering designed, supplied, and installed the electro-mechanical drive system for the AT&T Stadium retractable roof.  A custom rack-and-pinion system drives each panel 215 feet along slopes varying between 0 and 24 degrees, to open or close in approximately 12 minutes. When opening, the panels travel downhill with gravity doing most of the work and the motors actually slowing them down. The power generated through this process is harnessed and returned to the stadium's power grid using regenerative drives.

The project was awarded the American Institute of Steel Construction (AISC) IDEAS2 President's Award of Excellence in Engineering in 2010.

Uni-Systems Engineering staff also designed, supplied, and installed the operable end zone walls and the video board mechanization system at AT&T Stadium.