NEW YORK CITY — Construction has resumed for Beekman Tower, a 76-story residential building located in Manhattan, New York City, following the closing of a $680 million construction loan to the developer, Forest City Ratner Cos. Upon completion in 2010, Beekman Tower will be the tallest residential building in Manhattan. It will include 903 market-rate apartments, a 100,000-square-foot public school, a 21,000-square-foot ambulatory center for New York Downtown Hospital, and retail and parking facilities. The project was designed by Frank Gehry. Excavation and foundation work at the site has already been completed.