A 600-panel tessellation spreads sunlight undergroundBy now you know about the Lowline, the ambitious project to turn the 1.5 acre abandoned trolley terminal under Delancey Street in New York City into a public park. In just two weeks the project's founders, Dan Barasch and architect James Ramsey, will unveil a preview of the remote skylight system designed to transmit sunlight into the Delancey Underground in a life-size, fully functional installation currently being built into the Essex Street Market. Ramsey designed the remote skylights with a network of fiber optic cables that channel light gathered by a solar collection dish down below ground where it's dispersed. To make the most of the available sunlight, Ramsey enlisted the help of industrial designer Edward Jacobs, the former head of design at Confederate Motors, the high-end motorcycle company, who Ramsey describes as "a visionary and pretty much the most talented guy I've ever met." To disperse the sunlight as far as possible, Jacobs developed a tessellated canopy system made up of 600 ⅛ inch-thick hexagonal and triangular panels laser cut from clear anodized aluminum and bent in a hydraulic press. In an effort to maximize the sunlight's reach, the tessellated curvature is so specialized that no two panels are exactly alike. To get the shape and size of each panel just right, Jacobs worked with the engineering group Arup on materials testing and light readings, noting that 3D rendering only goes so far because "the ideas of light perception amount and reflectance can be quite counter intuitive." The panels, which are fabricated by Milgo Bufkin in Brooklyn, are labeled according to their position in the overall structure and screwed together with fold-over tabs on each side. The canopy is then attached to a four-cable truss system Jacobs developed so the entire 1,350-pound unit can be easily raised and lowered for maintenance. A few cables will also be attached to the outer edges of the canopy to eliminate any possibility of sag between the structural rib span, completing a system that Jacobs describes as "a combination of cable slings, clevises, electrical winches and safety hooks." Though Jacobs had just two months to design, fabricate and install the canopy, he doesn't cite time limitations as the project's biggest challenge, but tolerance. "The tolerances held by laser cutting and bending are vastly different than CNC work. You must design in leeway for movement and inconsistency from part to part. The accuracy of the processes can be up to 30 to 60 times different so one's approach and design must reflect this need for flexibility." Once he had the tolerance of the structure worked out, Jacobs had to make the Essex Street Market feel like a dark, abandoned trolley terminal. To simulate the light quality of the Delancey Underground in a bright and airy space, all the skylights were blacked out with cladding and heavy gauge opaque plastics. Then the remote skylights were installed in conjunction with six Sunbeams, circular light transmitting components manufactured by the Canadian solar technology company, SunCentral. Each of the Sunbeams has an internal GPS calibrated to follow the direction of the sun, ensuring that they transmit as much sunlight as possible during the day. For the days when New York is less than sunny there's a back up system of "sensor-based energy efficient electrical options that will be programmed to balance light levels constantly." The canopy will first be put to use on September 13th, the night of the unveiling, during which guests will shade their eyes from the simulated sunlight and revel at the prospect of strolling underground in sun dappled light in the dead of winter.
Posts tagged with "High Line":
“Throughout history, a plaza has been a place for airing statements of opinion, historical statements are limited by time and forgetfulness, but the statements inside Itjanayo are recorded and replayed for others to hear. Others who subsequently enter the box can add responses to the earlier statements as though they were adding online comments”, wrote e-flux.Saving the ranch. Ranch houses, those one-story dwellings once popular in the suburbs following World War II, are now turning fifty years old, making them eligible for preservation. While some deride the houses for their plain style, preservationist Richard Cloues argues that they must be saved as an important markers of U.S. housing development in the mid-twentieth century. More at the WS Journal.
Lahood Bikes to Work: The Transportation Secretary biked to work with other DOT commuters yesterday morning, as seen in this video. He wrote, "The route was safe and well-marked; we enjoyed some exercise; and we didn’t burn a drop of gas–which saved us some money." Since taking office in 2009, the former Republican congressman has prioritized light rail development and overseen $600 million in TIGER II grants to projects that promote livability. John Norquist, president of the Congress for New Urbanism, tells us Lahood is the best Transportation Secretary this country has seen since Secretary Coleman under President Ford.The High Line: "Economic Dynamo." The New York Times reports "preserving the High Line as a public park revitalized a swath of the city and generated $2 billion in private investment surrounding the park." The development of the High Line (the second section of which opens tomorrow) has spurred the construction of hundreds of deluxe apartments, art galleries, restaurants and boutiques nearby and the addition of 12,000 jobs, which more than make up for the $115 million the city spent on the park. Can Detroit Come Back? With a dwindling population, low literacy rates and vacant housing, Detroit is one of America's biggest underdogs. But the city's woes also make it the perfect laboratory for experiments like Hantz Farms plan to create the world's largest urban farm. OnEarth takes a look at the different ideas percolating in Detroit. Anthony Weiner on Bike Lanes: Anthony Weiner's getting some serious flack, but let's not forget: he also hates bike lanes, says Transportation Nation. At a Gracie Mansion dinner for New York’s Congressional Delegation last June, Weiner told Mayor Bloomberg: “When I become mayor, you know what I’m going to spend my first year doing? I’m going to have a bunch of ribbon-cuttings tearing out your [expletive] bike lanes.”