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56 Leonard Street, United States of America

Offset-arranged floors and countless cantilevered balconies required a detailed formwork and enclosure concept.
The Swiss team of architects, Herzog & de Meuron, designed the exceptional, 250 m high residential tower in Manhattan.
RCS climbing protection panel units provided perimeter safety with strongly cantilevered slab tables.
The safety of site staff and passers-by is of utmost importance

Project data

Location: New York, United States

  • 250-meter high residential tower in Manhattan with almost 60 floors
  • 145 exclusive apartments
  • 10 penthouses

The Swiss architecture firm, Herzog & de Meuron, outfitted the building with a striking design. More than 300 irregularly arranged balconies protrude from the glass facade; in some places, the floors are inwardly offset. This creates the impression that the individual floors are stacked on or moved into one another. 

Requirements

  • Offset floor arrangement
  • More than 300 irregularly arranged, cantilevered balconies
  • Extremely confined space conditions due to city center location

Customer

Contractor
Sorbara Construction Corp., Lynbrook

Architect
Herzog & de Meuron, Basel

Field Service
PERI Formwork Systems Inc., New York, USA
and PERI Polska Sp. z o.o., Płochocin, Poland

Customer's benefit

  • Detailed concept for formwork and enclosure design
  • Highest level of safety for site staff and passers-by.
  • PERI’s solution took into consideration the short allocated period of time and the extremely confined space conditions 
Picture of  Tom McGeown, Project Superintendent, Sorbara Construction Corp., Lynbrook
Tom McGeown
Project Superintendent

The 56 Leonard Street project had over 300 cantilevered balconies that required a perimeter protection system with custom solutions – and PERI was able to meet the challenge.

PERI solution

  • RCS climbing protection panel units in combination with strongly cantilevered slab tables
  • Geometrically and statically adjusted support systems consisting of MULTIPROP aluminum slab props and core elements of the VARIOKIT engineering construction kit
  • Detailed planning of formwork, support and anchoring as well as structural calculations for every floor
  • Project solution based on rentable construction kit systems
  • Customized enclosure design