Snapping Facade explores a sustainable design strategy that utilizes elastic instability to create dynamic motion at the building envelope. The current dynamic shading systems adopt either glass enhancement or motorized mechanical movement. This study introduces snapping-induced motion as an alternative actuation mechanism to control apertures, and proposes Snapping Facade as a new dynamic shading system. Based on analytical and numerical study, the researchers fabricated the assembly of a prototype snapping facade and validated the hand-operated snapping motion. The proposed snapping facade suggests a novel way to recycle the strain energy stored in structures via elastic instability.
Posts tagged with "University at Buffalo":
“Very long horizontal flues are unusual because smoke wants to go up, so it’s very challenging to keep it from stagnating,” says Davidson, a UB clinical assistant professor of architecture. “Many of the masons we talked to said they couldn’t do a horizontal flue longer than 8 feet.”Rochester, New York's Empire Masonry Heaters could, however. They helped the architects enliven the flue chamber, covering the refractory cement with patterned tiles reminiscent of an intricate mosaic. Their ornamental chamber doubles as a café bench. The kachelofen is known in North America simply as a masonry heater. While its winter-busting abilities are new to Buffalo, it is a centuries-old form of heating in Northern Europe. North America is “a fertile ground for new developments on masonry heater construction,” said the architects of the cheekily-dubbed Cafe Fargo. “It seems also with a widening consciousness about 'green' forms of heating, and rising heating costs, the good old masonry heater is grabbing peoples' interest,” they told AN. At only 880 square feet, their cafe is well-suited to the system. But Davidson and Rafailidis said masonry heating could work in larger spaces, too, but it might require several heaters to evenly heat multiple rooms. Wood-fired systems also need to be constantly monitored. Buffalo takes a degree of pride in its cold and snowy conditions, but if you've warmed up to the radiant heat of Cafe Fargo you may want to drop by—it's still looking for a tenant.
Boston Valley Terra Cotta restored the Alberta Legislature Building's century-old dome using a combination of digital and traditional techniques.Restoring a century-old terra cotta dome without blueprints would be a painstaking process in any conditions. Add long snowy winters and an aggressive freeze/thaw cycle, and things start to get really interesting. For their reconstruction of the Alberta Legislature Building dome, the craftsmen at Boston Valley Terra Cotta had a lot to think about, from developing a formula for a clay that would stand up to Edmonton’s swings in temperatures, to organizing just-in-time delivery of 18,841 components. Their answer? Technology. Thanks to an ongoing partnership with Omar Khan at the University at Buffalo’s School of Architecture and Planning, the Orchard Park, New York, firm’s employees are as comfortable with computers as they are with hand tools. On site in Edmonton, technicians took a 3D laser scan of the dome prior to disassembly. They also tagged specific terra cotta pieces to send to New York as samples. These pieces, which ranged from simple blocks to gargoyles and capitals, went straight to the in-house lab for scanning into Rhino. The drafting department combined the overall scan with the individual scans to create a total picture of the dome’s surface geometry and depth. The individual scans, in addition, were critical to making the approximately 508 unique molds employed on the project. To compensate for the eight percent shrinkage clay goes through during drying and firing, the craftsmen at Boston Valley used to have to perform a series of calculations before building a mold. “[Now we] take the scan data and increase by eight percent by simply doing a mouse click,” said Boston Valley national sales manager Bill Pottle. In some cases, the craftsmen converted the scan data into a tool path for the five-axis CNC machine used to make the molds. “We’re doing that more and more in some of our mold making. It also allows us to ensure that we’re recreating them to the most exacting tolerance and dimensions that we can,” said Pottle. The data from the 3D scans also helped the craftsmen replicate the dome’s complicated curvature. “Between the scanned pieces and the scan of the dome itself, we were able to figure out some very complex geometry where each of these individual pieces had the correct shape to them,” said Pottle. For sustainability and durability, the designers at Boston Valley reconfigured the dome as a rain screen system, with terra cotta components attached to a stainless steel frame. But while the rain screen boosts environmental performance, it also demands incredible precision. Again, the 3D models proved invaluable. “The models allowed these tight tolerances. [We] could explode it and make sure everything was connected. It would have been impossible without that level of sophisticated software,” said president John Krouse. The Alberta Legislature Building dome restoration is the first major project on which Boston Valley has unleashed its full array of digital design tools. Krouse hopes its success—he estimates that the digital tools speeded fabrication by 200 percent—will send a message to designers interested in experimenting with terra cotta: “What we’re trying to say to the architecture and design community globally is don’t be afraid to start designing domes with complex geometry, because we’re equipped with all this technology. It doesn’t have to be a square box.”
A structural, textured metal system wins first place in a competition and the chance to develop a façade with Zahner.Reinforcing the idea that time fosters wisdom, Nicholas Bruscia and Christopher Romano’s third iteration of a structural architectural screen was awarded first place in Tex-Fab’s digital fabrication competition, SKIN. According to Tex-Fab’s co-director, Andrew Vrana, the team’s 3xLP project was selected for its innovative façade system, which uses parametric design and digital fabrication. The 3xLP designers’ exploration of the relationship between academia and manufacturing merged at the University at Buffalo’s (UB) Department of Architecture. Starting their collaborative research with a digital model, Bruscia and Romano solicited the help of local manufacturer Rigidized Metals, (RM), who helped realize the second stage of the project’s evolution with two thin gauge metals featuring proprietary patterns. “The project is important because we’ve partnered so closely with Rigidized Metals,” Roman told AN. “We’ve brought digital and computational expertise, and they’ve provided material knowledge for textured metal—it’s a reciprocal team.” Bruscia said the computational models were heavily informed by material parameters. Working with various patterns in RM’s product library, the team started to see various textures performing differently in structural applications, though the company’s metals are typically used in cladding or decorative applications. “Rigidized Metals’ patterns are stronger than flat metals,” Romano said. “That informed how we selected textures and which became a part of the computational conversation.” Drawn to the geometry of the embossed 4LB sheet, they found the low relief pattern to perform comparably to a deeply stamped-style, and that it complemented other chosen patterns nicely. Structural loading was tested in Karamba, an architect-friendly finite element method analysis plugin for Rhino that was developed recently in Austria. Designed primarily in Rhino 5 and Grasshopper, the team also wrote many of their own scripts. For the SKIN competition, the team adjusted porosity of the screen to increase transparency for façade applications. The screen’s pattern is articulated from all perspectives, creating a dynamic quality that is achieved by a slight twist through the entire structure. “The twist in the system is a result of us getting the geometry on the screen for the system to perform structurally, and to make it possible to fabricate,” Romano said. “Some geometric moves on the screen can be difficult to fabricate, so to remove those you get subtle twisting in the elevation.” At RM’s Buffalo facility, profiles of the system’s components were turret-punched on a CNC, and folded on a press break to achieve a diamond shape. A tabbing system was also milled so the shapes could be fastened with stainless bolts to form a seamless, continuous cell structure. As part of the SKIN competition, Bruscia and Romano will continue working with RM, as well as A. Zahner Company, to fabricate a façade system with a glazing component. The 3xLP team will exhibit their results at the Tex-Fab 5 event in Austin, Texas on February 19.