Loop data center pitched for landmarked office building

A Chicago investor’s plan to convert part of a landmark Loop office building into a data center received its first city approval last week, a move Chicago’s leading preservationist group called “a dangerous precedent.” Igor Gabal is pitching the conversion of floors two through six of 300 W. Adams St. into a data center, with a new ComEd vault to power it. Ten backup generators would also be installed on the building’s roof. The Commission on Chicago Landmarks' Permit Review Committee approved…