Posts tagged with "Glass":
University of Arkansas addition celebrates the future with a contemporary rewrite of Neoclassicism.As head of the architecture department and distinguished professor at the University of Arkansas Fay Jones School of Architecture, Marlon Blackwell was uniquely qualified to oversee the renovation and expansion of the school's home, Vol Walker Hall. To unite the school's landscape architecture, architecture, and interior design departments under one roof for the first time, Blackwell's eponymous firm designed a contemporary west wing to mirror the east bar on the existing Beaux-Arts style building, constructed in the 1930s as the university library. But the Steven L. Anderson Design Center—which tied for Building of the Year in AN's 2014 Best of Design Awards—is more than a container for 37,000 square feet of new studio, seminar, and office space. It is also a teaching tool, a lesson in the evolution of architectural technology writ in concrete, limestone, glass, steel, and zinc. "Our strategy was to create a counterweight to the existing building," explained Blackwell. Rather than a layered steel-frame construction, Marlon Blackwell Architect opted for a post-tensioned concrete structure to convey a sense of mass and volume. "We also wanted to demonstrate what you can do with new technology like post-tensioned concrete, such as introducing a cantilever and introducing a profile that has minimal columns in the spaces," he said. "All of that is a didactic tool for our students to contrast and compare with the load-bearing technology of the existing structure." The exterior of the Steven L. Anderson Design Center also reflects on changes to architectural practice during the last 80 years. "We really wanted to develop a strong profile of the building, in contrast to Vol Walker Hall," said Blackwell. He describes the effect as a figure-ground reversal: where in the older structure the mass of the building is the ground and the windows and ornament act as figure, in the new wing the mass is the figure and the fenestration the ground. To create what Blackwell terms a "condition of resonance" between the Design Center and Vol Walker Hall, the architects engaged Clarkson Consulting to develop an architectural concrete to match the color of a local Arkansas limestone no longer available. They echoed the Indiana limestone on the older wing with panels sourced from a quarry only 50 miles from the original. But instead of grouting the limestone cladding on the new wing, Blackwell chose a limestone rain screen system from Stone Panels. "That allows us to go much thinner but much larger," he said. "Again, we're using the same materials but showing how the advancement of technology allows for a different expression of architecture." The defining feature of the Design Center is the more than 200-foot-long glass and steel curtain wall on the western facade. Knowing that the western exposure would provide the only source of natural light for the new wing, the architects worked to balance the need for light against the threat of solar gain. To complement the existing building, they chose a fascia steel curtain wall custom-fabricated by local company L&L Metal Fabrication. With curtain wall consultants Heitmann & Associates, Blackwell developed a brise soleil comprising 3/4-inch by 18-inch frit glass fins, angled to filter sunlight into the Design Center's 43-foot-deep studios. "What we like about it, too, is that it's one big window," said Blackwell. "It allows it to feel as if we've cut a section right through the building. At night the entire facade becomes a beacon, allowing for a nice interface between the school of architecture and the rest of the community." Other details, including the monolithic concrete pours designed to lighten the Design Center's connection to the ground, and zinc cladding used on the top floor to sharpen the profile of the main body, continue the dialogue between the new structure and its Neoclassical neighbor. "There are a lot of little things that give a tautness to the expression of the new addition, and give it its own identity," said Blackwell. "But at the same time, one of the things we were faithful to was trying to analyze and uncover units of measure and proportion on the old building, and apply that to ours." Perhaps more importantly, the building works as a design school—and Blackwell would know. "There's certainly contrast on the outside," he said. "But there's an almost resonant seamlessness on the inside."
A renovation and addition bring an historic church complex into the 21st century.The Diocese of Toronto approached architectsAlliance (aA) about renovating the St. James Cathedral Centre with two objectives in mind. On a practical level, they wanted more space for the cathedral’s outreach program and the Diocesan archives, as well as quarters for the Dean of the Cathedral and visitors. At the same time, the Anglican leadership wanted to make a statement about the Church’s relevance to contemporary Canadian society. “The idea of the addition was to convey an image of the Church itself as a kind of more open institution, much more transparent and contemporary,” said aA’s Rob Cadeau. “[It was] really driven by the dean, who wanted to refresh the image of the Church.”The architects designed the addition to the Parish Hall as a glass cube. “There’s a lot of use of glass, both as a contemporary material, but also to convey that idea of transparency, for the symbolism of the project,” said Cadeau. At the same time, the see-through extension “defers to the old building. It doesn’t take away from the presence of the old building as opposed to solid masonry construction.” The upper stories of the stick system curtain wall are wrapped in a floating sunscreen comprising repeating bands of laminated glass. “It was very important to the church that there be a sort of green aspect to the design in the way it’s conceived and constructed,” said Cadeau. “So the sunscreen was designed as a passive means of providing shading.” To maximize shading during the summer and solar gain during the winter, aA ran the sunscreen design through shadow analysis testing in ArchiCAD. They worked with Stouffville Glass to engineer both the sunscreen and the curtain wall. The sunscreen hangs on a vertical system of stainless steel brackets anchored to the HSS beams surrounding the slab edge of the second and third floors. The glass panels’ interlayer is printed with a linear pattern recalling the original building’s narrow button bars. “The idea of the lines within the sunscreen was to create a finer grain of detail on the glass,” explained Cadeau. The curtain wall itself is built of Solarban 60 glass. “It still provides the U value we wanted, but we didn’t want too much reflectivity because it’s a fairly small building,” said Cadeau. The firm also improved the thermal performance of the original Parish Hall building, which opened in 1910. With help from a building envelope consultant, they ran a thermal analysis of the structure to determine how much spray foam insulation to insert between the masonry wall and a new stud wall. The goal was to boost insulation while allowing some heat transfer. “That’s very important in heritage upgrades,” said Cadeau. “[T]he mistake you can make is over-insulating. Masonry walls rely in some sense of heat loss so that the water [trapped inside] never freezes. If the water absorbed in the brick freezes it will start to crack the brick.” The new St. James Cathedral Centre unites a previously disconnected cluster of buildings across an enclosed courtyard. In that way, aA suggests, the glass addition functions as a contemporary cloister. “In a larger, urban planning sense [the objective] was to complete the ensemble of buildings, create more of a connection between the buildings as a whole,” said Cadeau.
The glass, stone, and metal exterior of the Hatfield-Dowlin Complex evokes the strength and agility of a college athlete.The superhero and the Samurai. That’s where Zimmer Gunsul Frasca Architects (ZGF) began their design of the Hatfield-Dowlin Complex at the University of Oregon. The football player, the architects imagined, is like Batman: stealthy and strong, he came to his powers not by supernatural accident, but through relentless training. At the same time, the athlete is a highly skilled warrior, the modern-day equivalent of Japanese military nobility. The facade of the new football training facility materializes these ideas in glass, stone, and metal. Dominated by horizontal expanses of tinted glass, it is powerful but not foreboding. ZGF offers the analogy to a suit of armor: the building’s skin balances protection and connection, solidity and agility. The most direct expression of the armor metaphor is on the Hatfield-Dowlin Complex’s west exterior. In Eugene, the real solar challenge comes not from the south, but from the west, where the sun hovers near the horizon for long periods all winter long. To minimize glare, the designers placed a floating sunscreen across the western face of the building. Using elevation studies and interior models, they determined the optimal placement of a series of tinted glass panels held in an aluminum frame developed by Benson Industries. The result is seemingly random arrangement of overlapping rectangles, which ZGF’s Bob Snyder likened to scales on a Samurai’s costume. On the other three sides of the building, ZGF installed a curtain wall of fritted, triple-pane insulated glass units supplied by SYP. The frit pattern was inspired by the nearby John E. Jacqua Academic Center for Student Athletes, which ZGF also designed. The Jacqua’s facade comprises two layers of glass, five feet apart with a stainless steel wire screen in between. At the Hatfield-Dowlin Complex, the designers achieved a similar texture on a single layer of glass. “We saw that as a microcosm of the five-foot wall [at Jacqua],” said Snyder. The frit pattern was developed to be visible from both outside and inside the building, and to suggest movement as one passes along the facade. The final components of the Hatfield-Dowlin Complex exterior are stone and metal cladding. ZGF chose granite and basalt from Western Tile & Marble, which was treated with water jets for a striated texture. The designers used stone primarily on the first three floors of the building. “We established that as the stone zone, we wanted the weight of that material, the high durability of that material down low where folks would come into contact [with it],” said Snyder. Above, the stone transitions to aluminum panels for a lighter feel. “We worked with [Streimer Sheet Metal Works] to get the tightest radius we could get on the ribs of the metal panel,” explained Snyder. “We really struggled with that material [to make it] as fine as the stone, so it didn’t look like you were wearing tennis shoes with your tuxedo.” Plate-steel fins at the mouth of the parking garage and near the entrance sidewalk suggest the hard back of a dinosaur—yet another reference to armor. For Snyder, the combination of materials on the building’s facade achieve a balance between groundedness and ambition. Like the athletes inside it, the Hatfield-Dowlin Complex remains tied to the earth even as it appears to float above it. “The idea is that to be really good at football, you need to be right on the edge,” said Snyder.