400 Fifth Avenue

Langham Place at 400 Fifth Ave

Located at the southwest corner of 400 Fifth Avenue, the new high-rise is a few blocks away from the iconic Empire State Building. Originally constructed as the Setai Hotel, the building was renamed Langham Place in 2013. The skyscraper is designed by Gwathmey Siegel in joint venture with Schuman, Lichtenstein, Claman & Efron.

A crown is at the top of the 650' structure, engineered and produced by Zahner, using one of our most powerful systems: The ZEPPS™ Process. Originally engineered for the production of complex curved structures, the ZEPPS™ Process has now been adapted as a tool for producing facades in complex situations, such as the top of skyscrapers.

The client wanted to reduce the length of the install time, as well as provide the safest and most cost-effective solution for the completion of the crown. Since the ZEPPS™ Panels are pre-engineered, it reduced both the number of subcontractors on the job and the amount of time for traditional construction methods.

The panels of this crown were surfaced with Angel Hair™ Stainless steel, a surface that Zahner produces. The surface reduces glare as compared with a #4 finish on the material.

The surface also included a MetaBump™ surface pattern on the metal, as pictured above on the mockup. This serves to prevent the stainless steel from pillowing or oil-canning, as well as to further reduce the glare and add a glint of texture to the surface.


400 Fifth next to Empire State Building

Detail of single ZEPP™ Mockup Panel

400 Fifth at sunset

CAD Rendering of single ZEPPS™ Panel
 

Why ZEPPS™ Process?

The ZEPPS™ Process is typically used to efficiently construct complex forms and surfaces, such as the undulating curvatures by Frank Gehry or Randall Stout, but this project is one of the few where ZEPPS™ was used to construct a rectilinear form.

The ZEPPS™ Process eliminated three typical construction steps -- structural steel contractors, load bearing steel stud erectors, and finish surface contractors. Because of the way that these panels are pre-assembled, the potential danger for on-site workers was reduced by decreasing construction time, reducing the amount of workers involved on the structure, and eliminating workers being out on a swing-stage several hundred feet in the air.

The crown was pre-fabricated in the Zahner shop, shipped and hoisted to the top of the tower, and bolted.

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