A major fire ripped through an apartment building under construction in Concord early Tuesday, forcing the evacuation of 250 people from the residential complex next door and injuring two people there. Around 1 a.m., the Contra Costa County Fire Protection District received reports of a fire near the intersection of Willow Pass Road, Galindo Street and Concord Avenue. The building, a 180-unit development called Renaissance Square, was empty at the time of the fire, officials said. “When we arrived, there was a portion of the building that was completely engulfed,” Fire Marshal Robert Marshall said.