Uni-Systems Engineering, Inc.


Completed 2006

Location: Glendale, Arizona

Scope of Work: Design, Supply, Installation

Project Client: Hunt Construction


Architect: Populous and Peter Eisenman

General Contractor: Hunt Construction Group

Structural Engineer: Walter P Moore

University of Phoenix Stadium

Retractable Roof

The University of Phoenix multi-purpose facility is designed to represent a barrel cactus as well as a coiled snake, both native to the surrounding desert. The retractable roof was the first in North America to operate on an incline, providing a 100,000-square-foot opening in the dome-shape facility. Two retractable roof panels move along an arched travel path, which is 14 degrees in the open position above the end zones and becomes nearly flat as the panels meet above the 50-yard line in the closed position.

The staff of Uni-Systems Engineering designed, supplied, and installed the electro-mechanical drive system for the University of Phoenix retractable roof. Cable drives are mounted to the roof panels and spool cable that is anchored near the 50-yard line of the fixed building structure to move the retractable roof panels 182 feet between the open and closed positions in approximately 11 minutes.

Uni-Systems Engineering staff also designed, supplied, and installed the University of Phoenix Stadium retractable field, as well as powered truck, personnel, and field access doors at the south end of the stadium.