Around 1:15 this afternoon, the first of 930 steel mods was hoisted into place at B2, the first residential tower of Atlantic Yards. The momentous, freezing cold event was accompanied by the type of fanfare we've come to expect from Forest City Ranter's Brooklyn megaprojectbullhorns, cheering, crowds of presseven Bruce Ratner himself came to the corner of Flatbush Avenue and Dean Street to watch the 30,000-pound box find its permanent home. SHoP Architects designed the tower, which, at 32 stories and 322-feet tall, will be the tallest modular building in the world. The steel boxes are being fabricated in the Brooklyn Navy Yard, and they will form 363 apartments, ranging from studios to two-bedrooms. There will be 23 different apartment configurations with 64 layout variations, and fifty percent of the units will be affordable to low-, moderate-, and middle-income families. The ground floor holds 4,000-square-feet of retail, and occupancy is expected for the fourth quarter of 2014.