“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.
Posts tagged with "high-performance facades":
The building's pleated glass envelope contains 1,672 energy efficient panels that uniquely responds to its location.SOM has floated a glass cube above a large stepped civic plaza negotiating a sloped site in downtown Los Angeles for their United States Courthouse project, scheduled to open July, 2016 with an anticipated LEED Platinum rating. The 633,000 square foot, 220 foot tall facility includes 24 daylight-filled courtrooms and 32 judges’ chambers. José Luis Palacios, Design Director at SOM Los Angeles, says this structural configuration was integral to the success of the project: “Our challenge was how to make a transparent building, both metaphorically and structurally.” The project is being labeled as one of the nation’s safest buildings in regards to bomb threats and earthquakes due to an innovative structural engineering concept which allows a large volume of building to “float” over a stone base protected with hardened-concrete shear walls. The outer 33 feet of cantilevered building is suspended from a three-dimensional steel “hat truss” system, freeing the need for columns at the perimeter and ground level. The trusses are efficiently designed through an optimization process which resulted in a material savings of over 13 percent when compared to conventional trusses. The facade is comprised of a unitized 6’ wide by 20’ tall panel, organized into a ‘pleated’ zigzagged surface. By reconciling the downtown Los Angeles street grid, which runs 38 degrees east of true north, with optimum solar angles, the facade managed to reduce solar heat gain, harvest natural daylight, and maximize views into and out of the building. The pleating of the facade allows for a reduction in the radiant heat load of the building by 47 percent compared to a flat surface. Signage to the building is applied as a ceramic frit pattern to the glass of the pleated facade. The two-dimensional graphic, the ‘Great Seal of the United States,’ is projected onto the three dimensional facade, reinforcing the civic plaza and a frontal approach to the main entrance. As a result of the pleating, facade panels were broken down into two types: a “hot panel” and a “cold panel” side. Additional variation was introduced through internal program requirements, such as the Broadway and Hill Street facades where courtrooms consists of three internal layers of shades help to manage daylight from both sides of the courtroom. The modular, shop built assembly of panels is something Palacios says SOM is incorporating into an increasing amount of their projects today: “This gives us long-term durability, and seismic responsiveness: a great flexibility and resiliency.”
LEED Platinum renovation reconnects the Health Services Building to the campus core.Early in their renovation of the Arizona State University Health Services Building, Lake|Flato Architects, working with orcutt | winslow, decided to scrap the university’s initial concept in favor of a plan that would reengage the campus’s historic pedestrian corridor, the Palm Walk. Instead of building an addition to the north side of the existing facility, which included a serviceable two-story building constructed in the 1950s and another structure Lake|Flato partner Andrew Herdeg described as "a rambling one-story rabbit warren of spaces," the architects elected to demolish the one-story wing and build a two-story addition in its place. "This initial idea that we need to look at the basic concept before we start the design, and think about it from the campus design perspective, changed everything," said Herdeg. It allowed the design team to reduce the program by about 12 percent and reduce the footprint by 20 percent, as well as to preserve 5,000 square feet of green space for programs and stormwater mitigation. But it also presented a challenge. The renovated building’s primary identity would be on the east facade of the building, where the desert sun had the potential to undo efficiencies gained elsewhere. Lake|Flato and orcutt | winslow responded with a building envelope that provides a strong visual connection to the Palm Walk while reducing solar gain to the absolute minimum. The architects wrapped the south and west sides of the addition, where the clinics are located, in a tight brick over rigid fiberglass insulation. "The brick picks up on some surrounding historic buildings, and is also a traditional material for the campus," said Herdeg. The designers articulated the east side of the building with a series of bays and adjacent pocket gardens. The bays are oriented to the south and southeast, rather than due east, with the glazing on their south facets. "Instead of thinking about engaging the campus in a frontal way, we always thought of approaching this building on the diagonal," explained Herdeg. "Thinking about how the pedestrian perceives it helped us strategize about solar assets and thermal loads." The unglazed portions of the bays are clad in a metal skin, behind which an inch and a half of rigid insulation serves to eliminate thermal bridging. The articulated facade is designed to self-shade as the sun rises. "We worked on a series of pretty rudimentary daylighting studies that allowed us to look at the spacing of the bays," said Herdeg. "We did this balancing act between creating little pocket gardens, and using the adjacent bays to self-shade the glazing on the bays next to them." The design team installed corrugated metal overhangs over the bay windows to provide additional protection from direct sunlight. A series of recycled wood pulp and plastic screens from Trex, installed over the bay windows and over some of the glazing on the south and west sides of the building, constitute a final layer of defense against the Phoenix sun. "The Trex louver system allowed the solar thermal to be picked up on the lattice rather than the building skin; it was another barrier to the thermal load," said Herdeg. "The lattice also supports vines that are going to grow up, so these pocket gardens get surrounded by lush vine-covered walls." Likewise, on the new building’s two other facades, "the thought was that each of the little patient rooms would not be looking out at parking, but at a green screen," he explained. Lake|Flato and orcutt | winslow’s LEED Platinum intervention, which included replacing all the single-pane windows in the 1950s building with low-E insulated glass, will surely save ASU substantial sums on its energy bills. More importantly—thanks to the designers’ decision to demolish the inefficient one-story wing—it weaves the Health Services Building back into the campus fabric. "Now the building really addresses the campus," said Herdeg. "Before it had this very disjointed identity. Now we’ve created a cohesive identity with a single entrance. It’s a much better solution."
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.”