Here are the summaries from the Forum, with a few comments from me.
On April 18, the Forum for Urban Design convened to discuss the tallest building in the world to be built with modular construction. Bruce Ratner and MaryAnne Gilmartin of Forest City Ratner and Christopher Sharples of SHoP Architects presented their ambitious 32 story prefab tower at Atlantic Yards.The "vehement community opposition" predates the recession; the implication appears to be that shortened construction time would have less of a community impact. Unmentioned is how this process, by lowering construction costs, would upend promises Forest City Ratner made to construction unions.
Although modular construction has been experimented with for a century, few high-rises have been built using the technique. The latest, built outside of London, reaches twenty-five stories using precast concrete. The first tower of the Atlantic Yards project, B2, will reach seven stories higher, and will be the first with a steel structure.
Ms. Gilmartin and Mr. Sharples explained that B2 would act as Architecture R&D (Research & Development), the first of a dozen or so towers to experiment with modular construction. Devised during the deep recession and amidst vehement community opposition, the prefab towers at Atlantic Yards will accomplish two things: shortened construction time (an estimated six to eight months) and lower construction costs. And with a dozen towers in the works at Atlantic Yards, the process could only become more efficient as each tower is completed.
Mr. Ratner and Mr. Sharples are hopeful that prefab towers could very well become a fixture in major cities across the United States. But only after completing B2 will they know for sure.
BARCLAYS CENTER TOUR:
Three months leading up to its inauguration by Jay-Z, the Forum hosted a tour with Forest City Ratner of the Barclays Center, the arena at the heart of the Atlantic Yards project in Downtown Brooklyn. Winthrop Hoyt, Assistant Vice President of Development in charge of the arena project, sorted through the project’s history, from the Gehry master plan through the new arena design by SHoP Architects to its scheduled completion at the end of September 2012.The arena's about 18,000 seats for basketball, potentially more (but often less) for other events, depending on the size of the stage and the importance of 360-degree views. Actually, "retractable seating" hasn't been mentioned much. The New York Times reported in January, regarding plans for hockey:
Aside from the challenges of building a 15,000 seat arena in an urban setting, the Barclays Center had the added hurdles of the New York MTA and the LIRR, subway and commuter rails that required approval at every step of the process. Additionally, the incredible difficulty of building an arena in a lukewarm economic climate required a more affordable construction process. SHoP Architects managed to pick up the project and accomplish both, with prefabricated steel cladding and a scheme for retractable seating that would allow for versatile uses with a far smaller footprint.
Upon its completion in September 2012, the Barclays Center will be a cornerstone project in the evolving cultural infrastructure of Brooklyn, as well as a new icon for Downtown Brooklyn. Although the housing component of the Atlantic Yards will not be completed for several more years, the arena will likely begin the substantial and divisive redevelopment of the Prospect Heights and Fort Greene neighborhoods.
Retractable seats will mostly be collapsed on one end, closest to the Atlantic Terminal side, and therefore the alignment around the rink will resemble a horseshoe.Will the arena "likely begin the substantial and divisive redevelopment of the Prospect Heights and Fort Greene neighborhoods"? I think the "substantial" part already happened. The "divisive" part, surely, was accelerated by the announcement of Atlantic Yards.
As for "several more years," it's a real wildcard.
The "incredible difficulty of building and arena in a lukewarm economic climate" should be counterbalanced by the significant opportunity for sponsorships and publicity in the nation's media market.