Posts tagged with "Interpane":

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DS+R wraps 15 Hudson Yards with the largest cold-warped curtainwall in North America

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Diller Scofidio + Renfro (DS+R) and Rockwell Group's first skyscraper, 15 Hudson Yards, is now complete after four years of construction. The 88-story residential tower fuses the largest cold-warped glass curtain wall in North America with a louver and limestone base. The tower is located on the southwestern flank of Hudson Yards's first phase located on 28 acres between 30th and 34th Streets, and 10th and 11th Avenues. One of the sites many towers, 15 Hudson Yards alone will enclose a whopping 980,000 square feet. The 914-foot-tall project rises from a CNC-fabricated limestone base sourced from Carrara, Italy. According to the design team, parametric guidelines and 3-D modeling facilitated a seamless design-to-fabrication process for both the approximately 1800 stone panels and their steel support systems produced in Queens and New Jersey. The rear of each panel is studded with metal angles fastened to a network of bent plates attached to the steel support system.
  • Facade Manufacturer New Hudson Facades CIG Architecture Berardi Stone Setting
  • Architects Diller Scofidio + Renfro Rockwell Group (Lead Interior Architect)
  • Facade Installer Core Installation Berardi Stone Setting
  • Facade Consultants Thelen Design Group Vidaris
  • Location New York
  • Date of Completion January 2019
  • System Glass & stone curtain wall assembly
  • Products Interpane Insulated Glazing Units Bamco Ventilated Rainscreen Systems Santucci Group Dimensional Limestone Cladding CIG Architecture Formed Stainless Steel Cladding
The Shed, also designed by DS+R and Rockwell Group, adjoins the smooth limestone surface of 15 Hudson Yards along a diagonal seam defined by polished and formed steelwork by CIG Architecture. Incorporating the dynamic performance arts space into the base of the tower presented a number of mechanical and structural challenges for the design team. The 48.7-inch-wide modules all have both a glass and ventilation louver component. The designers varied the ratio of the two pieces parametrically to best ventilate interior mechanical equipment, with the widths of the louvers ranging from 4 to 31 inches. Beginning at the 20th story, the tower dramatically curves using a cold-warped unitized glass curtain wall system. The individual glazing units, produced by German manufacturer Interpane, were cold-warped on site. To warp the glass components, the panels were held in trapezoidal frames with silicone seal joints that anticipated the final form of the panels once they were bent into place. While early renderings of the project depicted 15 Hudson Yards with anatomical undulations, cost constraints and manufacturer warranties straightened the design into its current form. “We worked very closely with curtain wall fabricators from concept through execution, and the tower’s form is a product of this close collaboration,” said facade consultant Neil Thelen. “Using a collaborative parametric approach, we were able to iterate and analyze the impact of the tower’s curved forms on critical parameters such as IGU cold-warping, aluminum extrusion die option, unique part and assembly reduction, gasket engagement, and window operation.” Above the amenity spaces located roughly halfway up the tower—which are clad with glass mega panels—the facade's curvature increases dramatically, effectively breaking into four turrets. The glass panels deflect up to 8 inches at the skyscraper's summit. Although the dimensions and material of the facade differ throughout the tower, the cladding all attaches to the structural frame with a similar technique. “There are embedded plates in the slab edges to which faceplates are bolted with adjustable screws to align bearing points for each wall unit. Each curtain wall unit has a pair of load bearing hooks at the top where the dead load is transferred to the building structure from the hooks,” said DS+R project director John Newman. “It hangs from there and interlocks with a large, gasketted tongue-and-groove extrusion at the top of the unit below.” In response to river-borne gusts, the facade is designed to withstand 100-year wind loads with a system of structural silicone profiles, mullions, and steel reinforcements for spans greater than twelve feet. Additionally, testing conducted by an independent lab determined the placement of supplemental-load bearing aluminum extrusions.
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Weill Cornell Medical College’s Double Skin

A research center in Manhattan gets a custom facade solution for energy efficiency and user comfort.

Ennead Architects and Heintges & Associates recently completed construction on the 475,000-square-foot Belfer Research Center, Weill Cornell Medical College’s latest expansion to Manhattan’s Upper East Side. The building’s facade includes a unique double skin system on the southern face to define the medical campus’ identity, provide ample natural light without glare to the laboratory spaces, and create a highly efficient envelope. Heintges and Ennead previously worked together on the neighboring Weill Greenberg Center in 2007, said Todd Schliemann, partner in Ennead Architects and designer of both WCMC’s Weill Greenberg Center and new Belfer Research Building. Among the strategies employed in that project was the use of custom ceramic fritting to cut down on sun loading and glare. The team repeated that strategy at Belfer, applying ceramic frit to both sides of the building’s outer curtain wall. The exterior of the outermost layer features a white frit pattern designed to reflect sunlight, while a black frit pattern on the interior surface helps reduce glare and increase visibility through the glass.
  • Facade Manufacturer Permasteelisa, BGT, Interpane
  • Architects Ennead Architects, Heintges and Associates, Atelier 10
  • Location New York
  • Date of Completion 2014
  • System double insulated dual glass curtain wall with ceramic frit
The double curtain wall produces a chimney effect that reduces cooling loads. For insulation, the inner layer is composed of argon-filled insulated glass units. “We conducted a lot of thermal analysis to minimize bridging through the outriggers,” said John Pachuta, a partner at Heintges. The framing system for the inner wall is thermally broken; a layer of mineral-fiber insulation behind the frame helps improve performance. Permasteelisa manufactured the 5-foot units in its Montreal facility. Glass from BGT was treated with an Interpane coating, and outrigger connections were affixed to the frame every 5 feet. The outriggers also extend to support the outer skin. For the outer wall, unitizing the unique geometries helped maintain the building schedule, despite its complex appearance. “We learned that even with a subtle shift in plane, you can still use standard parts and pieces,” said Schliemann. The team was able to reduce the number of IGUs and achieve a more monolithic appearance by using larger, 10-and-a-half-foot panels, ultimately requiring fewer joints. The grid breaks into 21-foot repetitions, in order to accommodate window washing balconies that also provide faceted cavities in the exterior curtain wall. The cavity between the two skins measures between 18 and 25 inches to accommodate an aluminum catwalk, which is supported by the inner wall’s outriggers. Access points to the catwalk can be reached from the interior for cleaning and maintenance. With increasingly erratic environmental conditions in the Northeast corridor, the entire system had to be secure yet resilient. “We considered having support members starting from the base building structure—from the perimeter beams or columns to extend through the inner curtain wall—but to reduce thermal bridging it was more effective to have outriggers extend through the weather enclosure,” said Pachuta. “Instead, steel outriggers support the catwalk and outer screen wall that are directly attached to the mullions of the inner curtain wall.” Mullions of the inner curtain wall are reinforced with steel, and are anchored to the outer wall at the edge of each unit. The faceted cavities produce good ventilation, but also leave the protected areas open for pigeons to nest. En lieu of standard bird wire, the team developed a custom steel frame with tensioned, horizontal stainless steel rods ¾ inches apart. Though the system keeps the sky rats at bay, the wire is no wider than a bicycle spoke and does not impede views from inside.