12/28/2023 0 Comments Jenga tower buildingThe structural solution was to introduce one- or two-story walls able to transfer the load from one column location above to a different location below. To accommodate the varying apartment layouts throughout the building, which represented the main architectural concept, practically all of the columns had to be relocated from floor to floor by using walking columns. The structure is composed of cast-in-place concrete flat-plate slabs supported by reinforced concrete columns and shear walls. The tower at 56 Leonard is a reinforced concrete building. The reuse of existing foundation walls not only contributed to the reduction of lateral support during the excavation process but also reduced the cost of construction.ĥ6 Leonard under construction. The existing foundation walls on the north, east and south side of the site are a part of the new structure due to the adjacency of a Metropolitan Transportation Authority underground tunnel to the lot, as well as the column layout of the tower. The caps serve as main supports for the vertical and lateral force-resisting systems. Five-foot deep reinforced concrete caps structurally connect the caissons and piles. The lengths of caissons and piles range from 90 to 110 feet below the cellar level. The foundation of 56 Leonard consists of 1,500-ton, 24-inch diameter caissons socketed in bedrock, and 180-ton end-bearing H-piles. The 56th mezzanine floor houses a liquid tuned damper to provide adequate structural damping for occupant comfort. The highest residential floor is the 55th level. The building includes three mechanical floors located at the 32 nd, 46 th, and 56 th floors, with outrigger and belt wall systems placed on the first two of those stories. The new tower has a height of 825 feet from the street level and a width of about 78 feet, which results in a daring slenderness ratio slightly above 10. The blending of traditional, present and future needs demanded not only the incorporation of forward-thinking solutions but also a complete vision of sustainable and resilient design. In other words, the design of 56 Leonard successfully combines the idea of old-fashioned home ownership with the present vernacular of luxury urban living. An innovation of this scope and relevance certainly presents an excellent answer to the desire for traditional home ownership in an urban setting that is as unique as its occupants, while reducing the footprint of a conventional horizontal community of homes. The vertical neighborhood is a new paradigm in which the penthouse is no longer the single story breaking from the typical floor plan mold. In the case of 56 Leonard, these concepts take the form of an innovative stack of individual homes suggesting the new idea of a vertical neighborhood in which each owner can choose a unique residence, albeit in the sky. Herzog & de Meuron, the architects behind this project, have been known for forward-thinking concepts throughout their careers. In fact, the residents of 56 Leonard will each live in a bright, inimitable private home reaching the sky. The resulting sensation is that of a vertical community of uniquely “stacked” homes. In 56 Leonard, for instance, each floor gives the impression of being a singular, virtually independent structure carefully placed and balanced over yet another unique structural entity forming the floor below. The current economic, cultural and social context of the real estate market in New York City requires serving a continuously changing and diverse group of buyers and investors from all over the world, which in turn has generated a very strong demand for excellence in analysis, design and construction of luxury residential buildings. The southwest corner formed by Leonard Street and Church Street in New York City is ground to the 56 Leonard project, a new and unique 57-story residential development comprising 480,000 square feet of gross area.
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