Posts tagged with "Facades Conference":
Austin, Texas is a hot place to be. In fact, according to Arthur Andersson, it's "hotter than the hinges of hell." The Austin-based architect is a principal at Andersson-Wise Architects and will be speaking at this month's Facades+ AM conference in the city. He spoke to The Architect's Newspaper (AN) about a recent Austin project, Block 21, and how he combated the city's climate.
Though its official name doesn't give much away, Block 21 incorporates a W Hotel, residences, retail, offices, and a recording studio for KLRU where the show Austin City Limits Live at the Moody Theater is filmed. The building was Andersson's first ever high-rise (Block 21 climbs to 37 stories) but the architect was committed to producing a "useful" rather than a "pure" building.
"Many architects would have put protruding balconies on both sides of the building," claimed Andersson, who instead, opted to recess some on one side. "I posed a question to the Mayor, 'do you ever see people on those north balconies?'" Mayor Will Wynn's response was predictably a "no." Subsequently, Block 21's balconies provide shade in the summer and let the sun in and heat condos in the winter. "None of the four are sides doing the same thing, they're all different and based on the sun’s position," Andersson added. "Recessing balconies is like giving the building sunglasses."
Another method of tackling Austin's climate was through color. "Here, for some reason, a lot of the taller buildings are either beige or brown—or at least they were," said Andersson. "All these colors made you feel hotter than you already are! In Austin the sky gets super blue, so we wound up with a color scheme that almost disappears into the sky."
"The second thing that we did, and we the first building in Austin to do this, was to use a curtain wall so the structure was all inside and you couldn't see any mullions. As a result, the glass can have a very minimal connection, you just see [a] sheer face." As for the rest of the facade, particularly at the base of the building where the recording studio is located, compressed cement panels from Swisspearl acted as a rainscreen and provided a matte finish—a contrast the reflective glass.
Staying with the lower portion of the building, Andersson explained how Bill Zahner, president and CEO of A. Zahner Company, helped with the sheet metal work to create pre-finish weathered steel look for the car park, lobby, and base, which came across to Andersson as being like "ruins" when twinned with concrete.
Andersson will be speaking at Facades+ AM this July 18 in Austin. There he will discuss Block 21 in greater detail and joining him (albeit on a different panel) will be Anthony Birchler, vice president of engineering at A. Zahner Company.
Seating is limited. To find out more, please visit am.facadesplus.com.
Today at Facades+ New York, The Architect's Newspaper's conference series on innovative building envelopes, AEC professionals gathered for a day of talks on the challenges and opportunities presented by the design and construction of high-performance facades.
To kick off the afternoon session, Blake Middleton, partner at Handel Architects and Lois Arena, senior mechanical engineer at SWA convened to talk about “The House” at Cornell Tech. The 26-story, 350-unit building, on Roosevelt Island on the East River, is the largest Passive House–certified structure in the world. AN editor-in-chief William Menking was on hand to moderate the post-talk Q+A.
Passive House certification, Arena explained, is the most rigorous building standard in the world. Why? The certification is based on performance—and the performance levels that Passive House demands are five to ten times higher than current building codes require. So, to meet the exacting standards, Arena and Blake revealed just how they rose to that challenge with their project at Cornell Tech.
There are six key factors, Arena said, to achieving the certification: siting, compact shape, the proper enclosure, a low energy HVAC system, energy efficient appliances and lighting, and, crucially, user-friendliness.
The Cornell Tech building is sited due south to maximize solar gains. Middleton added that minimizing the facade’s exposed surface area was key to the certification: the designers used a “wrap” metaphor for what the facade might be, a form that's connected to the geology of the island. With a facade that’s 23 percent glass, “the design goal was to break down that scale and solidity with banding,” he said.
Functionally, the team used a prefabricated panelized wall frame for the facade, both for quality control and to achieve desired R-values of 19-40, depending on the wall’s thickness at various points.
To really double down on efficient energy use, The House has a feedback system to encourage occupant participation whereby residents can see how much energy they are using. The system, as a result, promotes friendly competition between floors to meet or beat projected energy use. Meanwhile, a centralized mechanical ventilation system helps maintain optimal airflow, but each room—per Passive House standards—comes equipped with fully operational windows to encourage natural ventilation.
Building on the success of the Cornell Tech project, the team’s next projects include a 700-unit Passive House–certified affordable housing development in East Harlem. To find out more about The House, check out another Q+A AN did with Blake earlier this week as well as more previous coverage here.
There are a few holes in HKS's stadium design for the Los Angeles Rams. In fact, there are 20 million. By numbers HKS has gone big: The $2.66 billion, 70,000-seater-stadium will use more than 36,000 panels of which will have 20 million perforations punched into them.
Dallas-based HKS prescribed an aluminum and ETFE skin to create a triangular facade-cum-canopy over and around the playing field where the Los Angeles Rams are set to play. Triangular panels form the structure too. Made from aluminum, the metal portion of the skin responds to the variable SoCal climate without the need for a HVAC system. Additionally, an ETFE ellipse, located in the center of the roof bathes the playing field in diffuse daylight. The desired effect, HKS said, is to create the impression of being outside.
A Design Assist project with facade fabricator Zahner Metals, HKS used their research and development arm, HKS LINE (the latter acronym stands for "Laboratory for INtensive Exploration") to aid the development of the stadium's skin. James Warton, a computational designer at HKS, spoke to The Architect's Newspaper, about the process used to conceive the facade.
Warton explained that the holes inside the in the triangular panels form an image on the facade, which can be seen properly when approaching the stadium from afar. Due to fabrication logistics and schedule, "only" 20 million perforations could be made with a required minimum distance of half-an-inch between each one. To get around this, though, eight different hole sizes were used to allow perforations to fall neatly in line with the panel's edge as well as enhance the facade's pattern.
To do this, a strategy using, Grasshopper, Rhino, C++ and Visual Studio was conceived which let HKS LINE determine perforation density and mapping. "Perforation sizes corresponding to grayscale values within the source image are also mapped onto the panel," said Warton. "We had to think of a system that would enable us to see every bit of information about every tile. This information is translated into text that can be used to make the panel."
The stadium, when completed in 2019, will be the world’s most expensive. James Warton will be speaking at the next Facades+ conference in New York April 6+7. There he and other members of HKS will discuss the Los Angeles Rams stadium and its facade in further detail. Seating is limited. To register, go to facadesplus.com
Touhey takes the stage with Jason Kelly Johnson of Future Cities Lab and Sanjeev Tankha of Walter P. Moore to discuss the next generation of facades. Go to Facades+ AM San Francisco to learn more about the event and the other sessions taking place.