Posts tagged with "Texas":
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A new cultural focal point takes shape in DallasWhen the Dallas Museum of Nature & Science was created from the 2006 merger of three city museums—the Museum of Natural History, The Science Place, and the Dallas Children’s Museum—the new institution set its sites on expanding programming with a new facility in the city’s Victory Park neighborhood. Now, the 180,000-square-foot Morphosis-designed Perot Museum of Nature & Science is slated for completion in 2013. Located at the northwest corner of Woodall Rodgers Freeway and Field Street, it marks the future crossroads of the city’s Trinity River Corridor Project and the city’s cultural districts. Floating atop an irregularly shaped plinth that will be the base for a one-acre rooftop ecosystem, the museum’s striated concrete facade offers a first glimpse at the dynamic transformation of the site. Early renderings show a smooth monolithic cube as the museum’s main volume, but the Morphosis team began working with the Hillsboro, Texas, branch of Gate Precast early in the project to develop a horizontally striped precast concrete panel design for the facade. “They wanted something different from everything else in Dallas,” said Gate sales and marketing manager Scott Robinson. “The architects wanted it to be true, raw, and modern.” To this end, Morphosis selected a plain gray concrete mix, without pigment or white cement, for the facade, knowing there would be natural mottling to each panel. “They didn’t want the building to look painted,” said Robinson. In total, the company will fabricate 655 precast pieces for the project. Gate created a series of mock-ups using random combinations of convex and concave shapes that would flow seamlessly from one panel to the next. After refining the design in Revit, Gate’s BIM operators modeled more than 100,000 square feet of precast cladding on the museum’s exterior for Morphosis’ 3-D models. Wood-framed concrete molds constructed in a range of set dimensions (the average size is 8 by 30 feet) helped keep facade costs lower. Within these, convex and concave rubber pieces based on the team’s digital models can be placed to achieve the desired striation. In the harsh Texas sun, the random shapes cast bold shadows across the building’s elevations, gradually giving way to smooth concrete surfaces on the higher levels. Because the pattern continues at the building’s corners, end panels required a two-step process: The short end was poured and set first, then rotated to allow the long section to be poured before the two pieces were attached with a cold joint. The curved precast panels for the museum’s base created another challenge—building formwork in multiple axes. Gate’s engineering department created a series of geometric points and calculations for its carpentry wing, and carpenters built the formwork by hand without any CNC equipment. “The hard part is that they get a picture of what the panel looks like, and they have to build the reverse of that,” said Robinson. The curved precast panels will require nearly 80 unique molds in all, comprising about 15 percent of the project’s precast concrete. For its final contribution to the project, Gate will cast several pieces that Morphosis is referring to as “sticks”—long precast beams that will decorate the site as sculpture or functional elements once the new museum’s rooftop ecosystem, with landscape architecture by Dallas-based Talley Associates, is in place.
In her speech, Meeks mentioned that since taking over leadership of the NTHP and meeting with preservationists and architects all over the country, three themes kept coming up: 1) The need to make preservation more accessible, 2) The need to make preservation more visible, and 3) The need to ensure that preservation is fully funded. By addressing those three things, she said, historic preservation can be a "visible, dynamic, broadly inclusive movement." However, I thought the most salient point she made was that places are powerful: Whether a landscape like the Hudson Valley or a historic site like the Alamo, every place has a story to tell and, as Meeks said, "they help us tell our stories, as individuals and as Americans."For his part, the New Yorker's Goldberger spoke about how Austin embodied the Next American City, making it a fitting location for the conference. Unlike Detroit and St. Louis, which represent the Old American City, Austin is both connected to history and “energetically forward-thinking” thanks to the presence of the University of Texas as well as the corporate headquarters of Dell and Whole Foods. He pointed out that it’s not a city dependent on the so-called "meds and eds" solutions -- healthcare and education -- that many cities rely on in postindustrial America, and that Austin does not have the “new pseudo-urban landscape" of Tyson’s Corner or the Buckhead section of Atlanta, or the Galleria area of Houston, which he cited as "new places that aspire to urbanity but don’t really possess much of it and which show us that a certain amount of density and tall buildings alone do not a city make.” Goldberger also pointed out that “poverty is a great friend” of historic preservation, simply because there’s less money and therefore less of an impetus for building big and tossing aside historic buildings because they aren’t shiny and new. In light of that, he felt that Austin was yet again a good role model for the Next American City, since it has prosperity but also pays heed to its architectural past: Its “solid economy has not led to a complete indifference to preservation.” Hopefully, as the city goes forward with developing a denser downtown, especially in the residential sector, the powers that be will remember that historic buildings or streetscapes are of significant value to the community.