VOIDED CONCRETE SLABS
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61 Ninth Avenue

Manhattan’s Voided Slab Standout

 

Corner cantilevers posed a challenge easily met with voided slabs.

 

PROJECT VOIDED SLAB ACHIEVEMENTS:

  • Solved a challenging corner cantilever

  • Maintained uniform slab thickness

  • Load reduction: 37 psf in voided areas


61 Ninth Avenue is a contemporary building on a tight site. Standing nine stories tall directly across from Chelsea Market, 61 Ninth Avenue sits in the heart of the Meatpacking District. Designed by Rafael Vinoly Architects and DeSimone Consulting Engineers, the new 170,000 square foot commercial structure rises 135 feet tall. Vornado Realty Trust and Aurora Capital are the developers of the project.

The massing of the building comes with a number of extracted corners that form mini cantilevers above square and rectangular-shaped terraces on multiple levels. Large floor-to-ceiling glass windows enclose the structure, and also let in plentiful sunlight for office workers.

The oversized dimensions also give the exterior a more open feeling from the street. In places where the building forms an indented corner, the glass windows visually create a seemingly continuous run without the grid of white metal panels between framing each window.  The best view of 61 Ninth Avenue is seen looking north from West 14th Street, or on the High Line at the wider southern elevation.

 
Corner Cantilever  — The use of a voided slab system opened possibilities for clear corner views with attractive flat slab surfaces and without adding depth to the floor system.

Corner Cantilever — The use of a voided slab system opened possibilities for clear corner views with attractive flat slab surfaces and without adding depth to the floor system.

 
 
Maximizing Views  - Enabled by voided concrete slabs, this unique building artfully combines corner cantilevers and flat soffits to open sight lines.

Maximizing Views - Enabled by voided concrete slabs, this unique building artfully combines corner cantilevers and flat soffits to open sight lines.

Simplified Construction  — Voided concrete slabs involves less complexity than alternative construction methods required to deliver the same result.

Simplified Construction — Voided concrete slabs involves less complexity than alternative construction methods required to deliver the same result.


ARCHITECT:      

  • Rafael Vinoly Architects

ENGINEER:       

  • DeSimone Consulting Engineers, PLLC

BUILDERS: 

  • StructureTech NY