Seven tons of glass and steel clad a structural stainless frame on the Western Hemisphere’s tallest building.Brooklyn-based metal fabrication company Kammetal and DCM Erectors of New Jersey were selected to fabricate and install the crowning beacon atop the spire on 1 World Trade Center. The fabrication team executed SOM’s design for a dynamic and complex adornment to one of the country’s most anticipated buildings, along with the help of engineers at Buro Happold to ensure safety at 1,776 feet. To craft a 15-ton, 50-foot beacon that accounted for thermal expansion and movement, Kammetal modeled and drew their designs in SolidWorks. The company’s team laser cut 48 triangular 316 stainless steel panels with ¼-inch thickness in a nondirectional finish to clad DCM’s square tubular steel frame. “Before we started the project, we had the structural frame 3D scanned to generate a point cloud,” explained Sam Kusack, president at Kammetal. “Because the structure was so dynamic—it contains zero right angles or reference points—we had to verify the conditions.” Once the angles were defined, multiple processes were employed to achieve the gentle curves of the cone. In order to ensure even bumping, or bending on a press break, the fabricators laser-scribed lines at every 1/8-inch along the panels’ interior. And to securely fasten each panel to the complex angles of the frame, Kammetal also devised a proprietary clip system that affixes each panel without obstruction. Clips that fell along certain angles could not be bent safely and had to be welded into place. To install tempered and laminated heat-soaked glass panels from Oldcastle, Kusack designed a proprietary vacuum panel lifting mechanism to adjust the panels without affecting the edges. “There’s a gap of just 3/8-inches, so it was the only way to handle the panels,” he told AN. The arm required a unique radius and capacity for strength to pick up each panel in a balanced manner and evenly align the gaps. Custom gaskets fabricated in London seal the glass from the elements. Kammetal also realized SOM’s original design for a rainscreen, which serves as a ventilation component. The beacon houses various mechanicals, including FAA lighting, so slots were laser cut to allow for air-cooling. To install the beacon, DCM Erectors fabricated a series of frames, supports, platforms, and transportation devices to safely place the beacon on top of the spire. “The owner of DCM invented a lot of gear and technology to realize this installation,” Kusack marveled. For example, a holding location was constructed at 1,700 feet to assemble the final interior and exterior components that all had to be raised an additional 70 feet so the apex could be lowered into place.
Posts tagged with "World Trade Center":
Yesterday, something remarkable happened. More than a decade after the destruction of the World Trade Center, the walls and fences surrounding a small corner of the site came down and the public was able to glimpse a new stretch of Greenwich Street—which will eventually bisect the site—as well as Fumihiko Maki's completed 72-story tower, Four World Trade. The minimalist tower is the first completed building on the site, though tenants will now begin building out their floors. “Today’s opening of 4 WTC is a truly momentous occasion in New York’s history,” Governor Cuomo said in a statement. “Twelve years after the 9/11 terrorist attacks, this building stands tall as a symbol of our nation’s resilience and strength. It will also contribute to the revitalization of Lower Manhattan, connecting mass transit, business, government and tourism all on one site. As we move forward in building a new World Trade Center, the opening of this first tower is a significant milestone and illustrates that, even in the face of great adversity, New York rises.” Progress on the site is becoming more evident on the site, with the ribs of Calatrava's transit hub rising above the fence line, the base of Three World Trade now boasting Richard Rogers–designed trusses, and One World Trade just officially declared the tallest building in the US. The Memorial has attracted millions of visitors and the Memorial Museum will open to the public next spring.
With the rise of Instagram and the proliferation of smart phones and digital cameras, we're all amateur photographer's these days. And now's your chance to snap a photo of One World Trade Center in Lower Manhattan for your chance to win a trip to the top of the tower with two friends! The Port Authority of New York and New Jersey is sponsoring the photo competition, calling for cellphone snapshots to be submitted via its Facebook page or with Twitter hashtag #OneWTCBestPhotos through August 25. Snap early and tell your friends, though, as winners will be chosen by the number of popular votes they receive online. For more details, head over here.
The World Trade Center Transportation Hub by Santiago Calatrava is the architect tells us "the image of a bird in flight." Yesterday we took a look at the interior retail corridor that will connect with the soaring transit hub oculus, but the structure has now just appeared above the scaffolding surrounding the entire Trade Center site and its looks nothing like a soaring bird but the bare bones of a beached carcass. It can only get better!
While Santiago Calatrava's soon-to-bo-soaring transportation hub at the World Trade Center is just not starting to rise from the ground, the Port Authority of New York and New Jersey has given us a glimpse of what's been going on underground, complete with the classic articulated ribs that make Calatrava's train stations so dynamic. And look at all that marble! Sure beats your standard New York City subway stop. This view is actually part of the east-west connector that will eventually be lined with retail shops.
The 1973 World Trade Center twin towers by Minora Yamasaki were not great buildings but in various light conditions or in the dark of the night they would take on a mute sculptural quality that New Yorkers now remember with fondness or nostalgic reverence. Now something quiet similar may be happening with the replacement to the tower—One World Trade Center. In certain light and atmospheric conditions the top floors of the building seem to glow like a bright incandescent light build. Walking down Church Street on Tuesday, May 21 about 10:00a.m. nearly every pedestrian headed south on the street stopped in amazement and if they had camera phones pointed them towards the tower which had become shrouded in shimmering clouds or fog and had taken on a magnificent glowing presence. The effect only lasted for a few fleeting minutes when the clouds moved on and horizontal shafts of light streamed out of the upper floors of the still unfinished structure. The top floors of the glass tower-unlike the lower floors- are translucent allowing views in and out of the building and this may be causing the glow. But whatever is causing this and whether it will remain when the building is finished is anyone's guess but for the time being the effect is nearly magical.
Anticipation was running as high as the tower itself as construction crews were standing by to raise the final two sections of the spire to the top of One World Trade Center today, a move that would have officially made the tower the tallest building in the Western Hemisphere at 1,776 feet, but high winds brought on delays. The final two sections of the 408-foot-tall spire, capped by a shining, pointed beacon, were scheduled to rise this afternoon, but the Port Authority decided to wait for for clearer skies to top-off the tower. The 800-ton spire, once completed, will serve as a television broadcast antenna, while the crystalline beacon, packed with 264 LEDs for a blistering 316,800 lumens, will shine into the sky each night, from sunset to sunrise once everything is up and running. Created by J.R. Clancy, Ballantyne Strong, and TDK Engineering, the beacon will also contain a rotating mirror to reflect different colored lights for the holidays, as we have all come to expect of New York's tallest buildings. The spire has stirred up controversy in the past, as budget cuts that removed an artistic cladding from its design may have downgraded the appendage to an antenna, as opposed to the more lyrical "spire." In the eyes of the Council on Tall Buildings and Urban Habitat, the organization that ranks the world's tallest buildings, this slight change could round down the height of One World Trade to 1,368 feet, leaving Chicago's Willis Tower secure in its position as Tallest in the West. Even if One World Trade doesn't make the grade, the views from the top will still be one of a kind.
Look out, there's been a major announcement at the World Trade Center. No, really. Look out and see all of New York City at your feet, from the 100th through 102nd floors of One World Trade. While the lines are sure to be long, plenty of multimedia on the way to banks of high-speed elevators should provide some entertainment and history lessons. Beginning in 2015, visitors will move through trippy video hallways, into a cave-like foundation room. After a quick 60-second elevator ride up 100 floors showcasing the vertical growth of New York, doors will open onto the One World Observatory and its mesmerizing 360-degree views from floor-to-ceiling windows. It's certainly not an experience for those with vertigo. The facility will be operated by Legends Hospitality and is expected to generate $875 million in revenue over 15 years. Admission prices to get to the observation deck have not been released. All renderings courtesy Port Authority of New York & New Jersey.
It is not uncommon for projects to change over time, but the performing arts center planned for the World Trade Center site has undergone many iterations. It has been tweaked, downsized, refocused, delayed, and at one point, possibly re-located to another site. Now, the New York Times reported that the center has been whittled down from a four-stage arts complex housing multiple cultural organizations—including the International Freedom Center, Signature Theater, the Drawing Center, and the Joyce Theater—to a multidisciplinary arts space with just one main stage. The Joyce Theater is the only remaining organization that will still be part of the center, though it will not be based at the World Trade Center site as previously planned. The next step is to find an artistic director who can oversee center and curate its programming. Frank Gehry has been working on the design of the center, but the recent changes have called for him to scale it back. Once costs and programming are nailed down, the preliminary board will move forward with fundraising efforts. Right now, though, it looks like the center won’t open its doors until 2017 or 2018.
It looks like construction of Santiago Calatrava’s World Trade Center PATH hub won't be wrapping up any time soon. Second Avenue Sagas reported that costs are mounting as the project deadline keeps getting extended. The project could now cost an additional $1.8 billion, and take another 18 months as a result of flooding from Hurricane Sandy, which would mean the station wouldn’t open until 2016. In an interview with The New York Times, Cheryl McKissack Daniel, president and chief executive of McKissack & McKissack, an architecture and construction management company specializing in infrastructure, discussed the cause of the delay. The Port Authority of New York and New Jersey and the Tishman Construction Corporation, however, insist that the transit hub will still be completed by 2015, according to the New York Observer.
Almost a year ago, reports surfaces that, without an anchor tenant, the 80-story Three World Trade tower by Pritzker-winner Richard Rogers of Rogers, Stirk, Harbour + Partners would be lopped off at seven stories. Without an anchor tenant signing up for at least 400,000 square feet of space in the $300 million tower, the Port Authority of New York & New Jersey will not guarantee the project's debt. Mayor Bloomberg is optimistic, though, telling the New York Post last week that the tower is "closer than anyone realizes" to landing that all-important tenant, which could be GroupM, a subsidiary of advertising giant WPP. The Post said the company is interested in 550,000 square feet of the tower's 2.8 million total square feet. If a deal is signed and construction continues, the tower could be complete in 2015. Bloomberg also delivered the not-unexpected news that Norman Foster's 88-story Two World Trade tower will likely remain a stump for the near future. SOM's One World Trade and Fumihiko Maki's Four World Trade are expected to be finished by the end of the year. In the meantime, take a look back at Silverstein's blockbuster video rendering of the complete World Trade Center site.
After a 1,500-nautical-mile voyage from Canada, half of the World Trade Center's antenna has arrived in New York, and, this morning, the first segments were hoisted 104 stories—over 1,300 feet above the streets of Lower Manhattan—for installation. During AN's site tour in September, the "roots" of the antenna were clearly visible, ready to accept the structure. Building this antenna is no small effort, either. Like the scale of everything at the World Trade site, the structure is gigantic, measuring in at 408-feet tall, higher than most skyscrapers in the rest of the country. Once finished, the antenna will bring the building's overall height to 1,776 feet. There remains some contention on how to describe the antenna structure—as simply an antenna or, more poetically, a spire—and despite what seems a semantic argument, the results could have tall repercussions. The Port Authority and the Durst Organization—both who use the term spire—opted to remove an architectural cladding designed by SOM and artist Kenneth Snelson from the antenna earlier this year, trimming millions from the building's price tag. Without that sculptural finish, however, the Council on Tall Buildings and Urban Habitat (CTBUH), the organization charged with ranking building heights, could opt to exclude the antenna from the overall building height, where an integrated spire would count. That would mean One World Trade won't clock in as the tallest building in the Western Hemisphere, or even the tallest in New York City.