World Trade Center Transit Hub

World Trade Center Transportation Hub

The World Trade Center Transportation Hub offers access to subway lines and a PATH Station. Visitors enjoy restaurants and retail shopping under the 40 panel arched retractable skylight, that runs the length of the center.

Retractable Skylight

Uni-Systems Engineering designed, supplied, and oversaw installation of the retractable skylight mechanical drive system for the World Trade Center Transportation Hub Oculus. The retractable skylight is comprised of 40 retractable panels installed along the oculus arch. When closed, the panels cantilever over a 313 foot long opening that varies in width between 17.5 feet at the top and 12 feet at the ends. When open, the panels are positioned over the building structure, out of sight from the building interior below. The skylight panels are driven along Winkel rails that slope 10° up toward the center of the roof. Each driven rail is powered by a 0.75-horsepower electric motor. A carriage on each rail provides the interface between the rail and the skylight panel.

General Information

Completed: 2016
Location: New York City, New York
Scope of Work: Design, Supply, Install

Project Team

Architects: Santiago Calatrava
General Contractor: Tishmann Turner



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