Posts tagged with "Atelier Ten":
“We don’t need walls anymore. We need living, breathing systems that provide so much more to the urban realm than keeping in conditioned air and keeping out noise and pollutants.” - Will Wright, AIA|LALos Angeles’ 2016 Facades+ Conference, presented by The Architect’s Newspaper, is the 18th event in an ongoing series of conferences and forums that have unfolded in cities across the nation, including New York City, Miami, San Francisco, Dallas, Houston, Seattle, D.C., and Chicago. Held at the L.A. Hotel Downtown, the conference incorporated architects, engineers, fabricators, and innovative material manufacturers into a multidisciplinary two-day event covering the state of building envelope design thinking today. The daylong symposium kicked off with spirited remarks by Will Wright, Director of Government & Public Affairs at AIA L.A., where he set forth a plea for stronger emphasis on localism and craftsmanship. Co-chaired by Kevin Kavanagh and Alex Korter of CO Architects, the event included AIA LA, four local architecture schools – UCLA, USC, Woodbury, and Cal Poly Pomona – and a robust collection of Los Angeles-based architecture firms. Four panel discussions throughout the day covered the influence of building envelopes on business, education, structural design, and data analysis. The conversations engaged audience participation through an interactive, web-based tool called Sli.do. In a morning panel discussion titled “Money Well Spent? An Owner’s Perspective on the Value of Facades,” moderator Kevin Kavanagh spoke with representatives from Kaiser Permanente, Kitchell, and The Ratkovich Company on finding the right balance between aesthetics, energy performance, fiscal responsibility, and efficient project scheduling. During breaks, conference attendees attended a “Methods+Materials” gallery that highlighted innovative building envelope materials such as electrochromic glass, metal mesh fabric with integrated media display, and ultra-compact surfacing products. The symposium was highlighted by keynote addresses from Enrique Norten and Eric Owen Moss. Norten’s opening keynote set forth an argument for a socially responsible architecture integrated into the city via infrastructural, landscape, and public space projects. He cited works of his firm, TEN Arquitectos, which incorporate topographical manipulations of the landscape to establish social spaces of public engagement. His work intentionally camouflages the building envelope into a contextual landscape—be it an adjacent park or cityscape—to dissolve the separation between public and private. Eric Owen Moss spoke in the afternoon, questioning at what point the conceptual content of a project becomes lost amidst constructional realities. Through recent work of his firm, Eric Owen Moss Architects, he focused on building envelope details that strayed from original design intent, transforming in concept and tectonics as engineers, fabricators, and contractors participated in the process. In a panel discussion titled “Bytes, Dollars, EUI: Data Streams and Envelopes,” Moderator William Menking, Founder and Editor-in-Chief of The Architect’s Newspaper, spoke with Atelier 10, Gehry Technologies, and CPG regarding tools and processes facilitating facade analysis and optimization. Sameer Kashyap (Gehry Technologies) shared perhaps the most bewildering stat of the day—that GT was able to script processes which allowed two people to produce over 1200 shop drawings per day for 33 weeks in the coordination of a highly complex facade system. Paul Zajfen of CO Architects rounded out the day with a presentation titled “Facades: A Manifestation of Client, Culture, Climate,” where he argued for contextually specific design producing a facade that “would not be possible at any other time—and in no other place.” The symposium was followed on day two with a series of “dialog” and “lab” workshops covering net-zero facade systems, digital fabrication processes, curtain wall design, and advanced facade analysis. A full roster of organizers and sponsors can be found on the conference website. The Los Angeles event was the first in 2016 of a seven-city lineup, and will be followed by a Facades+AM morning forum in Washington, D.C., on March 10th. The next two-day conference will take place in New York City April 21st and 22nd.
Net zero energy, LEED Platinum project raises the bar on eco-friendly office design.For its new headquarters in Los Altos, California, the David and Lucile Packard Foundation put its building budget where its mouth is. The philanthropic organization, whose four program areas include conservation and science, asked San Francisco-based EHDD to design a net zero energy, LEED Platinum building that would serve as a model of cutting-edge green building techniques. “They wanted to achieve net zero in a way that was replicable, and that showed the path forward for others to follow,” said project manager Brad Jacobson. “It was not just a one-off thing, not just a showcase.” The building’s facade was fundamental to its success as an example of sustainable design. “We were surprised at how significant the envelope is, even in the most benign climate,” said Jacobson. “Pushing the envelope to really high performance made significant energy and comfort impacts, and could be justified even on a first-cost basis.” EHDD began by considering the building’s siting. Because the street grid in Los Altos is angled 40 degrees to the south, orienting to the street would result in a long southwest elevation. The architects asked daylighting consultants Loisos + Ubbelohde what penalty this would entail. “They said you have to keep all solar gain out of the southwest facade; if you do that, the energy penalty will be in the realm of less than five percent,” recalled Jacobson. “But you really have to do an excellent job on sunshading. That was our mission.” EHDD designed deep overhangs over much of the facade’s southwest face, and added balconies and shade trees for additional protection. Where the glazing remained exposed, they installed external movable blinds from Nysan that operate on an astronomic time clock. “The blinds worked really well,” said Jacobson. “We were surprised how easy they were to commission and get working, and how relatively robust they are.” Thermal bridging was another area of concern for the architects. EHDD worked with Atelier Ten on thermal modeling of the wall, and discovered that any metal stud wall would sacrifice performance. They opted instead for wood stud construction, and switched to 24 on center framing to reduce thermal bridging through the framing structure. For insulation, the architects added one-inch external mineral wallboard from Roxul. On advice from structural engineers Tipping Mar, they installed FRP plates to separate external elements like balconies from the main structure. Because of the building’s location, EHDD did not initially consider triple glazing for the Packard Foundation offices. “We wrote it off at first,” said Jacobson. “We thought, that can’t be cost effective in this climate.” But Integral Group’s energy analysis convinced the design team otherwise. The improvement in comfort allowed by triple element windows from Serious Materials (now Alpen HPP) was such that the architects were able to eliminate a planned perimeter heating system, resulting in an estimated savings of twice the cost of the glazing upgrade. “It’s a really good envelope,” said Jacobson. “We did heat sensor testing of the building, and you can really see that it’s working as it’s supposed to. You don’t see the studs, and the windows are not leaking a lot of heat, so that’s been a real success.” The architects clad the building in local and sustainable materials, including FSC-certified western red cedar, stone sourced from within a 500-mile radius, and architectural copper. “Architectural copper is a really interesting material,” observed Jacobson. “It’s actually about 80-90 percent recycled because it’s valued. It doesn’t need refinishing and it patinas nicely. For a building being built to last 100 years, it has a good shot at never needing to be refinished or replaced.” Jacobson summarizes his firm’s approach to the design of the Packard Foundation headquarters as “Passive House light.” “At the same time we were doing a Passive House for a climate science researcher we’d worked with in the past,” he said. “We were working on both and learning from each. It’s a different type of building, but a lot of the same principles apply: good air sealing, eliminating thermal bridging, and pushing the envelope further than you think makes sense.”
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.