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BUILDING AND ROOFING AWARDS JUDGES AWARD


Safety and Beauty Combined A safety screen transforms an iconic library atrium


The Elmer Holmes Bobst Library at New York University in New York City was designed by renowned architects Philip Johnson and Rich- ard Foster in the early 1970s, but it has been the scene of three suicides since 2003—even after the installation of 8-foot polycarbonate barriers. Joel Sanders, design principal of Joel Sanders Architect, New York City, devised a suicide-prevention screen that both fulfi lled its primary duty and provided a dynamic presence to the 150-foot atrium area of the library. Around all sides of the atrium, crews placed


perforated aluminum screens that had been coated with 70 percent Kynar Gold Metallic from Arkema Inc., Philadelphia, and cut into non-repeating pat- terns that allowed light to penetrate the interior but prevented access. Mike P. McGrath is president of MG McGrath,


Maplewood, Minn., and his company did the fabrica- tion and installation of the screens. “The screen has fi ve patterns that repeat through each elevation,” he says. “It is almost impossible to pick up the pat- tern. The south elevation has the smallest openness percentage. The east and west elevations are mirror images of each and have more open than the south elevation, and the north is the most open.” The screens are 0.25-inch-thick aluminum panels


that were coated by Crystal Finishing, Schofi eld, Wis. MG McGrath used a water jet in a direct to fabrica- tion process from the CATIA model. Each panel was approximately 19 by 5 feet and weighed 185 pounds. McGrath explains that the biggest obstacle


to overcome was the time frame for construction. The library was only available from June 1 to Au- gust 1 and all work had to be performed at night. The company used three hoists; staging material in the center of the atrium. Panels were installed on a custom aluminum


tube/mullion that fastened to the fl oor below the carpet and a fl oating clip that is concealed in the plaster soffi t. The fl oating clips allow the fl oors to defl ect under live loads. Each panel is fastened with a tamperproof fastener. The screens have been variously described as draped lace or theatrical scrim.


Elmer Holmes Bobst Library, New York University, New York City


Completed: August, 2012 Building owner: New York University Architect: Joel Sanders Architect, www.joelsandersarchitect.com Metal screen fabricator/installer: MG McGrath, Maplewood, Minn., www.mgmcgrath.com Metal screen coater: Crystal Finishing, Schofi eld, Wis., www.crystalfi nishing.com Metal screen coating: Arkema Inc., King of Prussia, Pa., www.arkema-inc.com


32 METAL CONSTRUCTION NEWS December 2012 www.metalconstructionnews.com By Paul Deffenbaugh, Editorial Director


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