On June 7th, 2018, The Architect’s Newspaper will once again bring the Facades+AM conference to San Francisco. AN has put together a stellar lineup of speakers and presenters for the day-long event that promises to give a granular view of some of the most exciting developing technologies in the realm of high-performance facade design that have emerged in recent years, as building integration, resilient buildings, and sustainable design have taken a deeper hold in the architecture, engineering, and construction industry. The day’s program will be opened with a welcome by Emilie Hagen, associate director of Atelier Ten. Hagen helps lead Atelier Ten’s San Francisco team and is a member of the Facade Tectonics Steering Committee. Atelier Ten is currently at work on a slew of high-tech, globally-significant projects, including the forthcoming Google headquarters in London with BIG and Thomas Heatherwick, and has previously worked on the San Francisco Museum of Modern Art expansion with Snøhetta. The opening remarks will be followed by a panel discussion titled “Beyond Little Boxes: Innovations in Facade Design and Delivery” that will focus on the radical transformations occurring within the Bay Area’s building stock, as the city densifies and builds out new residential, medical, and college campuses. The panel will feature Stanley Saitowitz, principal of Natoma Architects; Shruti Kasarekar, associate at Atelier Ten; and Mark Cavagnero, founding partner of Mark Cavagnero Associates. That discussion will be followed by a deep dive into the design of SHoP’s new headquarters in San Francisco’s Mission Bay for carshare company Uber. The 423,000-square-foot project, focused around the delivery of an iconic and operable façade, will include an 11-story tower as well as a shaded patio overlooked by operable walls, among other components. AN has organized a panel featuring Alex Cox, development manager at Permasteelisato; Karen Brandt, senior principal at Heintges; Ryan Donaghy, senior associate at SHoP; Sameer Kumar, director of enclosure at SHoP; and Thilo Wilhelmsen, tender leader at Josef Gartner, to discuss how the design team has redefined conventional facade performance characteristics for the project. Next, the conference will delve into some of the Bay Area’s newest premier projects—like the Pelli Clarke Pelli Architects-designed Salesforce Tower and Transbay Terminal and the Manica Architecture-designed Golden State Warriors Arena—in a panel titled “Signature San Francisco: Delivering the Bay Area’s Next Generation of Facades.” The discussion will include Mirjam Link, senior project manager at Boston Properties; Sanjeev Tankha, director at Walter P Moore; and Daniel J. Dupuis, principal at Kendall Heaton. The conference will also include a pair of “extra credit” lunch-and-learn presentations focused on perimeter fire barrier systems and on laminated glass railing design led by industry leaders STI Firestop and Trosifol. For more information, see the Facades+AM website.
Posts tagged with "Heintges & Associates":
Brought to you with support fromThe Smithsonian National Museum of African American History and Culture (NMAAHC), scheduled to open to the public tomorrow, is capping off a nearly decade-long highly publicized planning and construction process. The 400,000-square-foot building is notable for securing the last developable site on the National Mall, and will be the nation’s primary home for exhibiting and celebrating African-American achievements in art, history, and culture. While 60 percent of the structure sits below grade, the remaining 40 percent rises 85 feet above grade and is wrapped in an arresting daylight-filtering screen referred to as a corona. The three-tiered, inverted form merges African and American historical references, drawing from Yoruban caryatids and the Washington Monument. The corona’s pattern was developed by digitizing traditional shapes the team found in historic ornate ironwork from Charleston and New Orleans. The project is the result of a collaboration among Adjaye Associates, who functioned as the lead designer, Freelon Group (now Perkins+Will), who covered the interior design scope above grade, Davis Brody Bond, who covered the interior design scope below grade, and SmithGroupJJR, who was responsible for the entire enclosure of the building from the foundations to the roof, and from curb to curb. With four architects and numerous consultant teams on board, the NMAAHC’s design process was fast and highly collaborative. The client and representatives of each of the firms attended workshops and presentations at project milestones. Work on the facade design process proceeded with a smaller team coordinated by Adjaye Associates, who held regular meetings at its New York City office. For federally funded projects, three initial concepts must be presented before narrowing down to one final scheme. Only 14 months was allotted for the time between a final concept submissions to the delivery of bid documents. Areta Pawlynsky, partner at Heintges & Associates, the consulting firm for facade engineering, said this timeframe was pressing, but ultimately benefitted the project: "This was incredibly demanding, but in a way, easier to keep the momentum going to work through all of these design decisions.” Throughout this process, Pawlynsky said, adhering to the competition-winning design vision was what drove the design development process. "The most challenging part of the project was making sure the facades remained true to the competition." She continued, "When we look back at the competition entry images and the verbal description, we are very proud the building's envelope was able to remain true throughout its development. That doesn't always happen." With full height atriums on each of the museum’s four sides, the exterior envelope was conceptualized as an “inside-out” assembly, providing clear spans of glass to the interior. Guy Nordenson & Associates developed the primary structural system—a series of three horizontal trusses that wrap the building, giving the facade its signature tiered form. Construction detailing of the envelope was carried out through a design assist package awarded to a joint venture between Enclos and Northstar, who developed a cost-saving strategy to integrate vertical trusses within the curtain wall assembly. Heintges & Associates then engineered and developed technical options for systems that attached to this structure, including the screen panels and unitized glass panels. Adjaye Associates’ decorative screen pattern was digitally manipulated—scaling up and down to produce four densities ranging from 65 to 95 percent opacity in response to key views of the surrounding monuments, and to solar orientation. Selective openings in the corona screen provide “lenses” looking outward to key views of the Washington Monument, Lincoln Memorial, Jefferson Memorial, White House, and U.S. Capitol. The material selection process for the corona screen began with solid cast bronze, which was deemed too heavy with a variation that—over time—would cause undesirable performative and maintenance issues. The design team settled on a cast aluminum due to the material’s track record as a reliable cladding. A unique five-coat application of PVDF produced variation and depth to the bronze coloration of the panels. The corona screen was assembled on-site from shop-fabricated steel plate carrier frames containing 13 cast aluminum panels each. A staggered paneling running across the facade required selective panels to be installed in the field. These “stitch panels” bridge the gaps between adjacent carrier frames, helping to conceal any visual clues to the pre-fabricated frame assembly. The design team consulted with Fisher Marantz Stone on a subtle lighting scheme to incorporate backlit panels that bounce light off frit glazed walls to produce a glowing facade at night. These details and lighting effects were scrutinized through numerous design studies and mockups, and by regulatory agencies to ensure the lighting of monuments at night would remain balanced. Hal Davis, senior vice president at SmithGroupJJR, said the building envelope design was “quite unusual.” Asked if there were any technical challenges associated with designing a curtainwall system with an inside-out weather line, Davis replied, “of course!” He explained that an off-the-shelf-system couldn’t simply be installed backward: "It’s a different approach and it did take quite a bit of effort. We worked with Enclos and Heinges and David Adjaye to get it right and to make sure we were going to maintain the integrity of the design, the tightness and the insulation quality of the system, preventing condensation. For this, we had to develop very subtle heating elements that would eliminate moisture.” Pawlynsky concluded, "I think the real story of success here is the collaboration, including the contractors, Enclos and Northstar, and CM Clark. There was a strong commitment to executing this facade in the appropriate way, and it extended across the board."
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. 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.