National September 11 Memorial Museum Pavilion

The National September 11 Memorial Museum resides in the space between where the Twin Towers once stood in New York City. Designed by Snøhetta with Handel, Zahner manufactured the custom facade skin for the building. The architects worked with Zahner engineers and designers in the Design Assist team to develop the facade system. Zahner unitized the metal systems in Kansas City and then shipped everything to the job site for installation.

September 11 Museum
September 11 Museum
September 11 Museum
One World Trade Center with 911 Museum.
One World Trade Center with 911 Museum.
911 Museum with waterfall at the WTC Memorial.
911 Museum with waterfall at the WTC Memorial.
911 Museum stainless steel soffit.
911 Museum stainless steel soffit.
Striating stainless steel panel system used on the 911 Museum facade.
Striating stainless steel panel system used on the 911 Museum facade.
South facade for the National September 11th Museum.
South facade for the National September 11th Museum.
South facade for the National September 11th Museum.
South facade for the National September 11th Museum.

Developing the 911 Museum Metal Facade

The panels were tested for wind loads and water permeability at a special facility. The panelization method used for the project required welding studs to the reverse of each panel. Zahner-trained fabricators welded the hardware at ideal penetration so that the stud-welds wouldn't show on the face of the metal panels.

The surface of the metal shell alternates between GB-60 polish and a No. 4 polish on stainless steel. The No. 4 polish has greater reflectivity along a linear grain, while the GB-60 surface scatters light for a more diffused look. This alternation repeats itself as a motif in not only the stainless steel facade, but also across the fenestration surface.

Detail of the 911 Museum facade in New York City.
Detail of the 911 Museum facade in New York City.
Zahner's NS11 mockups were tested for high moisture and winds.
Zahner's NS11 mockups were tested for high moisture and winds.
Zahner fabricator installs studs on the backs of NS11 Panels.
Zahner fabricator installs studs on the backs of NS11 Panels.
Zahner's NS11 mockups were tested for high moisture and winds.
Zahner's NS11 mockups were tested for high moisture and winds.
National September 11 Museum during construction
National September 11 Museum during construction
Detail of the National September 11 Museum stainless steel surface
Detail of the National September 11 Museum stainless steel surface